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authorDave Kleikamp <shaggy@linux.vnet.ibm.com>2007-06-06 16:28:35 -0400
committerDave Kleikamp <shaggy@linux.vnet.ibm.com>2007-06-06 16:28:35 -0400
commitf720e3ba558680cc7dd3995d005bdc8ee2ef46af (patch)
tree7217f0618795aa1c0a097adf73442842e6fd668c /fs/jfs
parent5ecd3100e695228ac5e0ce0e325e252c0f11806f (diff)
JFS: Whitespace cleanup and remove some dead code
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Diffstat (limited to 'fs/jfs')
-rw-r--r--fs/jfs/endian24.h2
-rw-r--r--fs/jfs/jfs_dinode.h42
-rw-r--r--fs/jfs/jfs_dmap.c419
-rw-r--r--fs/jfs/jfs_dmap.h118
-rw-r--r--fs/jfs/jfs_dtree.c105
-rw-r--r--fs/jfs/jfs_dtree.h2
-rw-r--r--fs/jfs/jfs_extent.c102
-rw-r--r--fs/jfs/jfs_filsys.h13
-rw-r--r--fs/jfs/jfs_imap.c293
-rw-r--r--fs/jfs/jfs_imap.h98
-rw-r--r--fs/jfs/jfs_incore.h4
-rw-r--r--fs/jfs/jfs_logmgr.c68
-rw-r--r--fs/jfs/jfs_logmgr.h26
-rw-r--r--fs/jfs/jfs_mount.c6
-rw-r--r--fs/jfs/jfs_txnmgr.c286
-rw-r--r--fs/jfs/jfs_txnmgr.h2
-rw-r--r--fs/jfs/jfs_types.h20
-rw-r--r--fs/jfs/jfs_umount.c2
-rw-r--r--fs/jfs/jfs_xtree.c428
-rw-r--r--fs/jfs/jfs_xtree.h48
-rw-r--r--fs/jfs/namei.c26
-rw-r--r--fs/jfs/resize.c48
-rw-r--r--fs/jfs/xattr.c6
23 files changed, 1066 insertions, 1098 deletions
diff --git a/fs/jfs/endian24.h b/fs/jfs/endian24.h
index 79494c4f2b10..fa92f7f1d0d0 100644
--- a/fs/jfs/endian24.h
+++ b/fs/jfs/endian24.h
@@ -29,7 +29,7 @@
29 __u32 __x = (x); \ 29 __u32 __x = (x); \
30 ((__u32)( \ 30 ((__u32)( \
31 ((__x & (__u32)0x000000ffUL) << 16) | \ 31 ((__x & (__u32)0x000000ffUL) << 16) | \
32 (__x & (__u32)0x0000ff00UL) | \ 32 (__x & (__u32)0x0000ff00UL) | \
33 ((__x & (__u32)0x00ff0000UL) >> 16) )); \ 33 ((__x & (__u32)0x00ff0000UL) >> 16) )); \
34}) 34})
35 35
diff --git a/fs/jfs/jfs_dinode.h b/fs/jfs/jfs_dinode.h
index 40b20111383c..c387540d3425 100644
--- a/fs/jfs/jfs_dinode.h
+++ b/fs/jfs/jfs_dinode.h
@@ -19,23 +19,23 @@
19#define _H_JFS_DINODE 19#define _H_JFS_DINODE
20 20
21/* 21/*
22 * jfs_dinode.h: on-disk inode manager 22 * jfs_dinode.h: on-disk inode manager
23 */ 23 */
24 24
25#define INODESLOTSIZE 128 25#define INODESLOTSIZE 128
26#define L2INODESLOTSIZE 7 26#define L2INODESLOTSIZE 7
27#define log2INODESIZE 9 /* log2(bytes per dinode) */ 27#define log2INODESIZE 9 /* log2(bytes per dinode) */
28 28
29 29
30/* 30/*
31 * on-disk inode : 512 bytes 31 * on-disk inode : 512 bytes
32 * 32 *
33 * note: align 64-bit fields on 8-byte boundary. 33 * note: align 64-bit fields on 8-byte boundary.
34 */ 34 */
35struct dinode { 35struct dinode {
36 /* 36 /*
37 * I. base area (128 bytes) 37 * I. base area (128 bytes)
38 * ------------------------ 38 * ------------------------
39 * 39 *
40 * define generic/POSIX attributes 40 * define generic/POSIX attributes
41 */ 41 */
@@ -70,16 +70,16 @@ struct dinode {
70 __le32 di_acltype; /* 4: Type of ACL */ 70 __le32 di_acltype; /* 4: Type of ACL */
71 71
72 /* 72 /*
73 * Extension Areas. 73 * Extension Areas.
74 * 74 *
75 * Historically, the inode was partitioned into 4 128-byte areas, 75 * Historically, the inode was partitioned into 4 128-byte areas,
76 * the last 3 being defined as unions which could have multiple 76 * the last 3 being defined as unions which could have multiple
77 * uses. The first 96 bytes had been completely unused until 77 * uses. The first 96 bytes had been completely unused until
78 * an index table was added to the directory. It is now more 78 * an index table was added to the directory. It is now more
79 * useful to describe the last 3/4 of the inode as a single 79 * useful to describe the last 3/4 of the inode as a single
80 * union. We would probably be better off redesigning the 80 * union. We would probably be better off redesigning the
81 * entire structure from scratch, but we don't want to break 81 * entire structure from scratch, but we don't want to break
82 * commonality with OS/2's JFS at this time. 82 * commonality with OS/2's JFS at this time.
83 */ 83 */
84 union { 84 union {
85 struct { 85 struct {
@@ -95,7 +95,7 @@ struct dinode {
95 } _dir; /* (384) */ 95 } _dir; /* (384) */
96#define di_dirtable u._dir._table 96#define di_dirtable u._dir._table
97#define di_dtroot u._dir._dtroot 97#define di_dtroot u._dir._dtroot
98#define di_parent di_dtroot.header.idotdot 98#define di_parent di_dtroot.header.idotdot
99#define di_DASD di_dtroot.header.DASD 99#define di_DASD di_dtroot.header.DASD
100 100
101 struct { 101 struct {
@@ -127,14 +127,14 @@ struct dinode {
127#define di_inlinedata u._file._u2._special._u 127#define di_inlinedata u._file._u2._special._u
128#define di_rdev u._file._u2._special._u._rdev 128#define di_rdev u._file._u2._special._u._rdev
129#define di_fastsymlink u._file._u2._special._u._fastsymlink 129#define di_fastsymlink u._file._u2._special._u._fastsymlink
130#define di_inlineea u._file._u2._special._inlineea 130#define di_inlineea u._file._u2._special._inlineea
131 } u; 131 } u;
132}; 132};
133 133
134/* extended mode bits (on-disk inode di_mode) */ 134/* extended mode bits (on-disk inode di_mode) */
135#define IFJOURNAL 0x00010000 /* journalled file */ 135#define IFJOURNAL 0x00010000 /* journalled file */
136#define ISPARSE 0x00020000 /* sparse file enabled */ 136#define ISPARSE 0x00020000 /* sparse file enabled */
137#define INLINEEA 0x00040000 /* inline EA area free */ 137#define INLINEEA 0x00040000 /* inline EA area free */
138#define ISWAPFILE 0x00800000 /* file open for pager swap space */ 138#define ISWAPFILE 0x00800000 /* file open for pager swap space */
139 139
140/* more extended mode bits: attributes for OS/2 */ 140/* more extended mode bits: attributes for OS/2 */
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index f3b1ebb22280..e1985066b1c6 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -154,12 +154,12 @@ static const s8 budtab[256] = {
154 * the in-core descriptor is initialized from disk. 154 * the in-core descriptor is initialized from disk.
155 * 155 *
156 * PARAMETERS: 156 * PARAMETERS:
157 * ipbmap - pointer to in-core inode for the block map. 157 * ipbmap - pointer to in-core inode for the block map.
158 * 158 *
159 * RETURN VALUES: 159 * RETURN VALUES:
160 * 0 - success 160 * 0 - success
161 * -ENOMEM - insufficient memory 161 * -ENOMEM - insufficient memory
162 * -EIO - i/o error 162 * -EIO - i/o error
163 */ 163 */
164int dbMount(struct inode *ipbmap) 164int dbMount(struct inode *ipbmap)
165{ 165{
@@ -232,11 +232,11 @@ int dbMount(struct inode *ipbmap)
232 * the memory for this descriptor is freed. 232 * the memory for this descriptor is freed.
233 * 233 *
234 * PARAMETERS: 234 * PARAMETERS:
235 * ipbmap - pointer to in-core inode for the block map. 235 * ipbmap - pointer to in-core inode for the block map.
236 * 236 *
237 * RETURN VALUES: 237 * RETURN VALUES:
238 * 0 - success 238 * 0 - success
239 * -EIO - i/o error 239 * -EIO - i/o error
240 */ 240 */
241int dbUnmount(struct inode *ipbmap, int mounterror) 241int dbUnmount(struct inode *ipbmap, int mounterror)
242{ 242{
@@ -320,13 +320,13 @@ int dbSync(struct inode *ipbmap)
320 * at a time. 320 * at a time.
321 * 321 *
322 * PARAMETERS: 322 * PARAMETERS:
323 * ip - pointer to in-core inode; 323 * ip - pointer to in-core inode;
324 * blkno - starting block number to be freed. 324 * blkno - starting block number to be freed.
325 * nblocks - number of blocks to be freed. 325 * nblocks - number of blocks to be freed.
326 * 326 *
327 * RETURN VALUES: 327 * RETURN VALUES:
328 * 0 - success 328 * 0 - success
329 * -EIO - i/o error 329 * -EIO - i/o error
330 */ 330 */
331int dbFree(struct inode *ip, s64 blkno, s64 nblocks) 331int dbFree(struct inode *ip, s64 blkno, s64 nblocks)
332{ 332{
@@ -395,23 +395,23 @@ int dbFree(struct inode *ip, s64 blkno, s64 nblocks)
395/* 395/*
396 * NAME: dbUpdatePMap() 396 * NAME: dbUpdatePMap()
397 * 397 *
398 * FUNCTION: update the allocation state (free or allocate) of the 398 * FUNCTION: update the allocation state (free or allocate) of the
399 * specified block range in the persistent block allocation map. 399 * specified block range in the persistent block allocation map.
400 * 400 *
401 * the blocks will be updated in the persistent map one 401 * the blocks will be updated in the persistent map one
402 * dmap at a time. 402 * dmap at a time.
403 * 403 *
404 * PARAMETERS: 404 * PARAMETERS:
405 * ipbmap - pointer to in-core inode for the block map. 405 * ipbmap - pointer to in-core inode for the block map.
406 * free - 'true' if block range is to be freed from the persistent 406 * free - 'true' if block range is to be freed from the persistent
407 * map; 'false' if it is to be allocated. 407 * map; 'false' if it is to be allocated.
408 * blkno - starting block number of the range. 408 * blkno - starting block number of the range.
409 * nblocks - number of contiguous blocks in the range. 409 * nblocks - number of contiguous blocks in the range.
410 * tblk - transaction block; 410 * tblk - transaction block;
411 * 411 *
412 * RETURN VALUES: 412 * RETURN VALUES:
413 * 0 - success 413 * 0 - success
414 * -EIO - i/o error 414 * -EIO - i/o error
415 */ 415 */
416int 416int
417dbUpdatePMap(struct inode *ipbmap, 417dbUpdatePMap(struct inode *ipbmap,
@@ -573,7 +573,7 @@ dbUpdatePMap(struct inode *ipbmap,
573/* 573/*
574 * NAME: dbNextAG() 574 * NAME: dbNextAG()
575 * 575 *
576 * FUNCTION: find the preferred allocation group for new allocations. 576 * FUNCTION: find the preferred allocation group for new allocations.
577 * 577 *
578 * Within the allocation groups, we maintain a preferred 578 * Within the allocation groups, we maintain a preferred
579 * allocation group which consists of a group with at least 579 * allocation group which consists of a group with at least
@@ -589,10 +589,10 @@ dbUpdatePMap(struct inode *ipbmap,
589 * empty ags around for large allocations. 589 * empty ags around for large allocations.
590 * 590 *
591 * PARAMETERS: 591 * PARAMETERS:
592 * ipbmap - pointer to in-core inode for the block map. 592 * ipbmap - pointer to in-core inode for the block map.
593 * 593 *
594 * RETURN VALUES: 594 * RETURN VALUES:
595 * the preferred allocation group number. 595 * the preferred allocation group number.
596 */ 596 */
597int dbNextAG(struct inode *ipbmap) 597int dbNextAG(struct inode *ipbmap)
598{ 598{
@@ -656,7 +656,7 @@ unlock:
656/* 656/*
657 * NAME: dbAlloc() 657 * NAME: dbAlloc()
658 * 658 *
659 * FUNCTION: attempt to allocate a specified number of contiguous free 659 * FUNCTION: attempt to allocate a specified number of contiguous free
660 * blocks from the working allocation block map. 660 * blocks from the working allocation block map.
661 * 661 *
662 * the block allocation policy uses hints and a multi-step 662 * the block allocation policy uses hints and a multi-step
@@ -680,16 +680,16 @@ unlock:
680 * size or requests that specify no hint value. 680 * size or requests that specify no hint value.
681 * 681 *
682 * PARAMETERS: 682 * PARAMETERS:
683 * ip - pointer to in-core inode; 683 * ip - pointer to in-core inode;
684 * hint - allocation hint. 684 * hint - allocation hint.
685 * nblocks - number of contiguous blocks in the range. 685 * nblocks - number of contiguous blocks in the range.
686 * results - on successful return, set to the starting block number 686 * results - on successful return, set to the starting block number
687 * of the newly allocated contiguous range. 687 * of the newly allocated contiguous range.
688 * 688 *
689 * RETURN VALUES: 689 * RETURN VALUES:
690 * 0 - success 690 * 0 - success
691 * -ENOSPC - insufficient disk resources 691 * -ENOSPC - insufficient disk resources
692 * -EIO - i/o error 692 * -EIO - i/o error
693 */ 693 */
694int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results) 694int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
695{ 695{
@@ -706,12 +706,6 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
706 /* assert that nblocks is valid */ 706 /* assert that nblocks is valid */
707 assert(nblocks > 0); 707 assert(nblocks > 0);
708 708
709#ifdef _STILL_TO_PORT
710 /* DASD limit check F226941 */
711 if (OVER_LIMIT(ip, nblocks))
712 return -ENOSPC;
713#endif /* _STILL_TO_PORT */
714
715 /* get the log2 number of blocks to be allocated. 709 /* get the log2 number of blocks to be allocated.
716 * if the number of blocks is not a log2 multiple, 710 * if the number of blocks is not a log2 multiple,
717 * it will be rounded up to the next log2 multiple. 711 * it will be rounded up to the next log2 multiple.
@@ -720,7 +714,6 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
720 714
721 bmp = JFS_SBI(ip->i_sb)->bmap; 715 bmp = JFS_SBI(ip->i_sb)->bmap;
722 716
723//retry: /* serialize w.r.t.extendfs() */
724 mapSize = bmp->db_mapsize; 717 mapSize = bmp->db_mapsize;
725 718
726 /* the hint should be within the map */ 719 /* the hint should be within the map */
@@ -879,17 +872,17 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
879/* 872/*
880 * NAME: dbAllocExact() 873 * NAME: dbAllocExact()
881 * 874 *
882 * FUNCTION: try to allocate the requested extent; 875 * FUNCTION: try to allocate the requested extent;
883 * 876 *
884 * PARAMETERS: 877 * PARAMETERS:
885 * ip - pointer to in-core inode; 878 * ip - pointer to in-core inode;
886 * blkno - extent address; 879 * blkno - extent address;
887 * nblocks - extent length; 880 * nblocks - extent length;
888 * 881 *
889 * RETURN VALUES: 882 * RETURN VALUES:
890 * 0 - success 883 * 0 - success
891 * -ENOSPC - insufficient disk resources 884 * -ENOSPC - insufficient disk resources
892 * -EIO - i/o error 885 * -EIO - i/o error
893 */ 886 */
894int dbAllocExact(struct inode *ip, s64 blkno, int nblocks) 887int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
895{ 888{
@@ -946,7 +939,7 @@ int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
946/* 939/*
947 * NAME: dbReAlloc() 940 * NAME: dbReAlloc()
948 * 941 *
949 * FUNCTION: attempt to extend a current allocation by a specified 942 * FUNCTION: attempt to extend a current allocation by a specified
950 * number of blocks. 943 * number of blocks.
951 * 944 *
952 * this routine attempts to satisfy the allocation request 945 * this routine attempts to satisfy the allocation request
@@ -959,21 +952,21 @@ int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
959 * number of blocks required. 952 * number of blocks required.
960 * 953 *
961 * PARAMETERS: 954 * PARAMETERS:
962 * ip - pointer to in-core inode requiring allocation. 955 * ip - pointer to in-core inode requiring allocation.
963 * blkno - starting block of the current allocation. 956 * blkno - starting block of the current allocation.
964 * nblocks - number of contiguous blocks within the current 957 * nblocks - number of contiguous blocks within the current
965 * allocation. 958 * allocation.
966 * addnblocks - number of blocks to add to the allocation. 959 * addnblocks - number of blocks to add to the allocation.
967 * results - on successful return, set to the starting block number 960 * results - on successful return, set to the starting block number
968 * of the existing allocation if the existing allocation 961 * of the existing allocation if the existing allocation
969 * was extended in place or to a newly allocated contiguous 962 * was extended in place or to a newly allocated contiguous
970 * range if the existing allocation could not be extended 963 * range if the existing allocation could not be extended
971 * in place. 964 * in place.
972 * 965 *
973 * RETURN VALUES: 966 * RETURN VALUES:
974 * 0 - success 967 * 0 - success
975 * -ENOSPC - insufficient disk resources 968 * -ENOSPC - insufficient disk resources
976 * -EIO - i/o error 969 * -EIO - i/o error
977 */ 970 */
978int 971int
979dbReAlloc(struct inode *ip, 972dbReAlloc(struct inode *ip,
@@ -1004,7 +997,7 @@ dbReAlloc(struct inode *ip,
1004/* 997/*
1005 * NAME: dbExtend() 998 * NAME: dbExtend()
1006 * 999 *
1007 * FUNCTION: attempt to extend a current allocation by a specified 1000 * FUNCTION: attempt to extend a current allocation by a specified
1008 * number of blocks. 1001 * number of blocks.
1009 * 1002 *
1010 * this routine attempts to satisfy the allocation request 1003 * this routine attempts to satisfy the allocation request
@@ -1013,16 +1006,16 @@ dbReAlloc(struct inode *ip,
1013 * immediately following the current allocation. 1006 * immediately following the current allocation.
1014 * 1007 *
1015 * PARAMETERS: 1008 * PARAMETERS:
1016 * ip - pointer to in-core inode requiring allocation. 1009 * ip - pointer to in-core inode requiring allocation.
1017 * blkno - starting block of the current allocation. 1010 * blkno - starting block of the current allocation.
1018 * nblocks - number of contiguous blocks within the current 1011 * nblocks - number of contiguous blocks within the current
1019 * allocation. 1012 * allocation.
1020 * addnblocks - number of blocks to add to the allocation. 1013 * addnblocks - number of blocks to add to the allocation.
1021 * 1014 *
1022 * RETURN VALUES: 1015 * RETURN VALUES:
1023 * 0 - success 1016 * 0 - success
1024 * -ENOSPC - insufficient disk resources 1017 * -ENOSPC - insufficient disk resources
1025 * -EIO - i/o error 1018 * -EIO - i/o error
1026 */ 1019 */
1027static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks) 1020static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks)
1028{ 1021{
@@ -1109,19 +1102,19 @@ static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks)
1109/* 1102/*
1110 * NAME: dbAllocNext() 1103 * NAME: dbAllocNext()
1111 * 1104 *
1112 * FUNCTION: attempt to allocate the blocks of the specified block 1105 * FUNCTION: attempt to allocate the blocks of the specified block
1113 * range within a dmap. 1106 * range within a dmap.
1114 * 1107 *
1115 * PARAMETERS: 1108 * PARAMETERS:
1116 * bmp - pointer to bmap descriptor 1109 * bmp - pointer to bmap descriptor
1117 * dp - pointer to dmap. 1110 * dp - pointer to dmap.
1118 * blkno - starting block number of the range. 1111 * blkno - starting block number of the range.
1119 * nblocks - number of contiguous free blocks of the range. 1112 * nblocks - number of contiguous free blocks of the range.
1120 * 1113 *
1121 * RETURN VALUES: 1114 * RETURN VALUES:
1122 * 0 - success 1115 * 0 - success
1123 * -ENOSPC - insufficient disk resources 1116 * -ENOSPC - insufficient disk resources
1124 * -EIO - i/o error 1117 * -EIO - i/o error
1125 * 1118 *
1126 * serialization: IREAD_LOCK(ipbmap) held on entry/exit; 1119 * serialization: IREAD_LOCK(ipbmap) held on entry/exit;
1127 */ 1120 */
@@ -1233,7 +1226,7 @@ static int dbAllocNext(struct bmap * bmp, struct dmap * dp, s64 blkno,
1233/* 1226/*
1234 * NAME: dbAllocNear() 1227 * NAME: dbAllocNear()
1235 * 1228 *
1236 * FUNCTION: attempt to allocate a number of contiguous free blocks near 1229 * FUNCTION: attempt to allocate a number of contiguous free blocks near
1237 * a specified block (hint) within a dmap. 1230 * a specified block (hint) within a dmap.
1238 * 1231 *
1239 * starting with the dmap leaf that covers the hint, we'll 1232 * starting with the dmap leaf that covers the hint, we'll
@@ -1242,18 +1235,18 @@ static int dbAllocNext(struct bmap * bmp, struct dmap * dp, s64 blkno,
1242 * the desired free space. 1235 * the desired free space.
1243 * 1236 *
1244 * PARAMETERS: 1237 * PARAMETERS:
1245 * bmp - pointer to bmap descriptor 1238 * bmp - pointer to bmap descriptor
1246 * dp - pointer to dmap. 1239 * dp - pointer to dmap.
1247 * blkno - block number to allocate near. 1240 * blkno - block number to allocate near.
1248 * nblocks - actual number of contiguous free blocks desired. 1241 * nblocks - actual number of contiguous free blocks desired.
1249 * l2nb - log2 number of contiguous free blocks desired. 1242 * l2nb - log2 number of contiguous free blocks desired.
1250 * results - on successful return, set to the starting block number 1243 * results - on successful return, set to the starting block number
1251 * of the newly allocated range. 1244 * of the newly allocated range.
1252 * 1245 *
1253 * RETURN VALUES: 1246 * RETURN VALUES:
1254 * 0 - success 1247 * 0 - success
1255 * -ENOSPC - insufficient disk resources 1248 * -ENOSPC - insufficient disk resources
1256 * -EIO - i/o error 1249 * -EIO - i/o error
1257 * 1250 *
1258 * serialization: IREAD_LOCK(ipbmap) held on entry/exit; 1251 * serialization: IREAD_LOCK(ipbmap) held on entry/exit;
1259 */ 1252 */
@@ -1316,7 +1309,7 @@ dbAllocNear(struct bmap * bmp,
1316/* 1309/*
1317 * NAME: dbAllocAG() 1310 * NAME: dbAllocAG()
1318 * 1311 *
1319 * FUNCTION: attempt to allocate the specified number of contiguous 1312 * FUNCTION: attempt to allocate the specified number of contiguous
1320 * free blocks within the specified allocation group. 1313 * free blocks within the specified allocation group.
1321 * 1314 *
1322 * unless the allocation group size is equal to the number 1315 * unless the allocation group size is equal to the number
@@ -1353,17 +1346,17 @@ dbAllocNear(struct bmap * bmp,
1353 * the allocation group. 1346 * the allocation group.
1354 * 1347 *
1355 * PARAMETERS: 1348 * PARAMETERS:
1356 * bmp - pointer to bmap descriptor 1349 * bmp - pointer to bmap descriptor
1357 * agno - allocation group number. 1350 * agno - allocation group number.
1358 * nblocks - actual number of contiguous free blocks desired. 1351 * nblocks - actual number of contiguous free blocks desired.
1359 * l2nb - log2 number of contiguous free blocks desired. 1352 * l2nb - log2 number of contiguous free blocks desired.
1360 * results - on successful return, set to the starting block number 1353 * results - on successful return, set to the starting block number
1361 * of the newly allocated range. 1354 * of the newly allocated range.
1362 * 1355 *
1363 * RETURN VALUES: 1356 * RETURN VALUES:
1364 * 0 - success 1357 * 0 - success
1365 * -ENOSPC - insufficient disk resources 1358 * -ENOSPC - insufficient disk resources
1366 * -EIO - i/o error 1359 * -EIO - i/o error
1367 * 1360 *
1368 * note: IWRITE_LOCK(ipmap) held on entry/exit; 1361 * note: IWRITE_LOCK(ipmap) held on entry/exit;
1369 */ 1362 */
@@ -1546,7 +1539,7 @@ dbAllocAG(struct bmap * bmp, int agno, s64 nblocks, int l2nb, s64 * results)
1546/* 1539/*
1547 * NAME: dbAllocAny() 1540 * NAME: dbAllocAny()
1548 * 1541 *
1549 * FUNCTION: attempt to allocate the specified number of contiguous 1542 * FUNCTION: attempt to allocate the specified number of contiguous
1550 * free blocks anywhere in the file system. 1543 * free blocks anywhere in the file system.
1551 * 1544 *
1552 * dbAllocAny() attempts to find the sufficient free space by 1545 * dbAllocAny() attempts to find the sufficient free space by
@@ -1556,16 +1549,16 @@ dbAllocAG(struct bmap * bmp, int agno, s64 nblocks, int l2nb, s64 * results)
1556 * desired free space is allocated. 1549 * desired free space is allocated.
1557 * 1550 *
1558 * PARAMETERS: 1551 * PARAMETERS:
1559 * bmp - pointer to bmap descriptor 1552 * bmp - pointer to bmap descriptor
1560 * nblocks - actual number of contiguous free blocks desired. 1553 * nblocks - actual number of contiguous free blocks desired.
1561 * l2nb - log2 number of contiguous free blocks desired. 1554 * l2nb - log2 number of contiguous free blocks desired.
1562 * results - on successful return, set to the starting block number 1555 * results - on successful return, set to the starting block number
1563 * of the newly allocated range. 1556 * of the newly allocated range.
1564 * 1557 *
1565 * RETURN VALUES: 1558 * RETURN VALUES:
1566 * 0 - success 1559 * 0 - success
1567 * -ENOSPC - insufficient disk resources 1560 * -ENOSPC - insufficient disk resources
1568 * -EIO - i/o error 1561 * -EIO - i/o error
1569 * 1562 *
1570 * serialization: IWRITE_LOCK(ipbmap) held on entry/exit; 1563 * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
1571 */ 1564 */
@@ -1598,9 +1591,9 @@ static int dbAllocAny(struct bmap * bmp, s64 nblocks, int l2nb, s64 * results)
1598/* 1591/*
1599 * NAME: dbFindCtl() 1592 * NAME: dbFindCtl()
1600 * 1593 *
1601 * FUNCTION: starting at a specified dmap control page level and block 1594 * FUNCTION: starting at a specified dmap control page level and block
1602 * number, search down the dmap control levels for a range of 1595 * number, search down the dmap control levels for a range of
1603 * contiguous free blocks large enough to satisfy an allocation 1596 * contiguous free blocks large enough to satisfy an allocation
1604 * request for the specified number of free blocks. 1597 * request for the specified number of free blocks.
1605 * 1598 *
1606 * if sufficient contiguous free blocks are found, this routine 1599 * if sufficient contiguous free blocks are found, this routine
@@ -1609,17 +1602,17 @@ static int dbAllocAny(struct bmap * bmp, s64 nblocks, int l2nb, s64 * results)
1609 * is sufficient in size. 1602 * is sufficient in size.
1610 * 1603 *
1611 * PARAMETERS: 1604 * PARAMETERS:
1612 * bmp - pointer to bmap descriptor 1605 * bmp - pointer to bmap descriptor
1613 * level - starting dmap control page level. 1606 * level - starting dmap control page level.
1614 * l2nb - log2 number of contiguous free blocks desired. 1607 * l2nb - log2 number of contiguous free blocks desired.
1615 * *blkno - on entry, starting block number for conducting the search. 1608 * *blkno - on entry, starting block number for conducting the search.
1616 * on successful return, the first block within a dmap page 1609 * on successful return, the first block within a dmap page
1617 * that contains or starts a range of contiguous free blocks. 1610 * that contains or starts a range of contiguous free blocks.
1618 * 1611 *
1619 * RETURN VALUES: 1612 * RETURN VALUES:
1620 * 0 - success 1613 * 0 - success
1621 * -ENOSPC - insufficient disk resources 1614 * -ENOSPC - insufficient disk resources
1622 * -EIO - i/o error 1615 * -EIO - i/o error
1623 * 1616 *
1624 * serialization: IWRITE_LOCK(ipbmap) held on entry/exit; 1617 * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
1625 */ 1618 */
@@ -1699,7 +1692,7 @@ static int dbFindCtl(struct bmap * bmp, int l2nb, int level, s64 * blkno)
1699/* 1692/*
1700 * NAME: dbAllocCtl() 1693 * NAME: dbAllocCtl()
1701 * 1694 *
1702 * FUNCTION: attempt to allocate a specified number of contiguous 1695 * FUNCTION: attempt to allocate a specified number of contiguous
1703 * blocks starting within a specific dmap. 1696 * blocks starting within a specific dmap.
1704 * 1697 *
1705 * this routine is called by higher level routines that search 1698 * this routine is called by higher level routines that search
@@ -1726,18 +1719,18 @@ static int dbFindCtl(struct bmap * bmp, int l2nb, int level, s64 * blkno)
1726 * first dmap (i.e. blkno). 1719 * first dmap (i.e. blkno).
1727 * 1720 *
1728 * PARAMETERS: 1721 * PARAMETERS:
1729 * bmp - pointer to bmap descriptor 1722 * bmp - pointer to bmap descriptor
1730 * nblocks - actual number of contiguous free blocks to allocate. 1723 * nblocks - actual number of contiguous free blocks to allocate.
1731 * l2nb - log2 number of contiguous free blocks to allocate. 1724 * l2nb - log2 number of contiguous free blocks to allocate.
1732 * blkno - starting block number of the dmap to start the allocation 1725 * blkno - starting block number of the dmap to start the allocation
1733 * from. 1726 * from.
1734 * results - on successful return, set to the starting block number 1727 * results - on successful return, set to the starting block number
1735 * of the newly allocated range. 1728 * of the newly allocated range.
1736 * 1729 *
1737 * RETURN VALUES: 1730 * RETURN VALUES:
1738 * 0 - success 1731 * 0 - success
1739 * -ENOSPC - insufficient disk resources 1732 * -ENOSPC - insufficient disk resources
1740 * -EIO - i/o error 1733 * -EIO - i/o error
1741 * 1734 *
1742 * serialization: IWRITE_LOCK(ipbmap) held on entry/exit; 1735 * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
1743 */ 1736 */
@@ -1870,7 +1863,7 @@ dbAllocCtl(struct bmap * bmp, s64 nblocks, int l2nb, s64 blkno, s64 * results)
1870/* 1863/*
1871 * NAME: dbAllocDmapLev() 1864 * NAME: dbAllocDmapLev()
1872 * 1865 *
1873 * FUNCTION: attempt to allocate a specified number of contiguous blocks 1866 * FUNCTION: attempt to allocate a specified number of contiguous blocks
1874 * from a specified dmap. 1867 * from a specified dmap.
1875 * 1868 *
1876 * this routine checks if the contiguous blocks are available. 1869 * this routine checks if the contiguous blocks are available.
@@ -1878,17 +1871,17 @@ dbAllocCtl(struct bmap * bmp, s64 nblocks, int l2nb, s64 blkno, s64 * results)
1878 * returned. 1871 * returned.
1879 * 1872 *
1880 * PARAMETERS: 1873 * PARAMETERS:
1881 * mp - pointer to bmap descriptor 1874 * mp - pointer to bmap descriptor
1882 * dp - pointer to dmap to attempt to allocate blocks from. 1875 * dp - pointer to dmap to attempt to allocate blocks from.
1883 * l2nb - log2 number of contiguous block desired. 1876 * l2nb - log2 number of contiguous block desired.
1884 * nblocks - actual number of contiguous block desired. 1877 * nblocks - actual number of contiguous block desired.
1885 * results - on successful return, set to the starting block number 1878 * results - on successful return, set to the starting block number
1886 * of the newly allocated range. 1879 * of the newly allocated range.
1887 * 1880 *
1888 * RETURN VALUES: 1881 * RETURN VALUES:
1889 * 0 - success 1882 * 0 - success
1890 * -ENOSPC - insufficient disk resources 1883 * -ENOSPC - insufficient disk resources
1891 * -EIO - i/o error 1884 * -EIO - i/o error
1892 * 1885 *
1893 * serialization: IREAD_LOCK(ipbmap), e.g., from dbAlloc(), or 1886 * serialization: IREAD_LOCK(ipbmap), e.g., from dbAlloc(), or
1894 * IWRITE_LOCK(ipbmap), e.g., dbAllocCtl(), held on entry/exit; 1887 * IWRITE_LOCK(ipbmap), e.g., dbAllocCtl(), held on entry/exit;
@@ -1933,7 +1926,7 @@ dbAllocDmapLev(struct bmap * bmp,
1933/* 1926/*
1934 * NAME: dbAllocDmap() 1927 * NAME: dbAllocDmap()
1935 * 1928 *
1936 * FUNCTION: adjust the disk allocation map to reflect the allocation 1929 * FUNCTION: adjust the disk allocation map to reflect the allocation
1937 * of a specified block range within a dmap. 1930 * of a specified block range within a dmap.
1938 * 1931 *
1939 * this routine allocates the specified blocks from the dmap 1932 * this routine allocates the specified blocks from the dmap
@@ -1946,14 +1939,14 @@ dbAllocDmapLev(struct bmap * bmp,
1946 * covers this dmap. 1939 * covers this dmap.
1947 * 1940 *
1948 * PARAMETERS: 1941 * PARAMETERS:
1949 * bmp - pointer to bmap descriptor 1942 * bmp - pointer to bmap descriptor
1950 * dp - pointer to dmap to allocate the block range from. 1943 * dp - pointer to dmap to allocate the block range from.
1951 * blkno - starting block number of the block to be allocated. 1944 * blkno - starting block number of the block to be allocated.
1952 * nblocks - number of blocks to be allocated. 1945 * nblocks - number of blocks to be allocated.
1953 * 1946 *
1954 * RETURN VALUES: 1947 * RETURN VALUES:
1955 * 0 - success 1948 * 0 - success
1956 * -EIO - i/o error 1949 * -EIO - i/o error
1957 * 1950 *
1958 * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit; 1951 * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
1959 */ 1952 */
@@ -1989,7 +1982,7 @@ static int dbAllocDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
1989/* 1982/*
1990 * NAME: dbFreeDmap() 1983 * NAME: dbFreeDmap()
1991 * 1984 *
1992 * FUNCTION: adjust the disk allocation map to reflect the allocation 1985 * FUNCTION: adjust the disk allocation map to reflect the allocation
1993 * of a specified block range within a dmap. 1986 * of a specified block range within a dmap.
1994 * 1987 *
1995 * this routine frees the specified blocks from the dmap through 1988 * this routine frees the specified blocks from the dmap through
@@ -1997,18 +1990,18 @@ static int dbAllocDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
1997 * causes the maximum string of free blocks within the dmap to 1990 * causes the maximum string of free blocks within the dmap to
1998 * change (i.e. the value of the root of the dmap's dmtree), this 1991 * change (i.e. the value of the root of the dmap's dmtree), this
1999 * routine will cause this change to be reflected up through the 1992 * routine will cause this change to be reflected up through the
2000 * appropriate levels of the dmap control pages by a call to 1993 * appropriate levels of the dmap control pages by a call to
2001 * dbAdjCtl() for the L0 dmap control page that covers this dmap. 1994 * dbAdjCtl() for the L0 dmap control page that covers this dmap.
2002 * 1995 *
2003 * PARAMETERS: 1996 * PARAMETERS:
2004 * bmp - pointer to bmap descriptor 1997 * bmp - pointer to bmap descriptor
2005 * dp - pointer to dmap to free the block range from. 1998 * dp - pointer to dmap to free the block range from.
2006 * blkno - starting block number of the block to be freed. 1999 * blkno - starting block number of the block to be freed.
2007 * nblocks - number of blocks to be freed. 2000 * nblocks - number of blocks to be freed.
2008 * 2001 *
2009 * RETURN VALUES: 2002 * RETURN VALUES:
2010 * 0 - success 2003 * 0 - success
2011 * -EIO - i/o error 2004 * -EIO - i/o error
2012 * 2005 *
2013 * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit; 2006 * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2014 */ 2007 */
@@ -2055,7 +2048,7 @@ static int dbFreeDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
2055/* 2048/*
2056 * NAME: dbAllocBits() 2049 * NAME: dbAllocBits()
2057 * 2050 *
2058 * FUNCTION: allocate a specified block range from a dmap. 2051 * FUNCTION: allocate a specified block range from a dmap.
2059 * 2052 *
2060 * this routine updates the dmap to reflect the working 2053 * this routine updates the dmap to reflect the working
2061 * state allocation of the specified block range. it directly 2054 * state allocation of the specified block range. it directly
@@ -2065,10 +2058,10 @@ static int dbFreeDmap(struct bmap * bmp, struct dmap * dp, s64 blkno,
2065 * dmap's dmtree, as a whole, to reflect the allocated range. 2058 * dmap's dmtree, as a whole, to reflect the allocated range.
2066 * 2059 *
2067 * PARAMETERS: 2060 * PARAMETERS:
2068 * bmp - pointer to bmap descriptor 2061 * bmp - pointer to bmap descriptor
2069 * dp - pointer to dmap to allocate bits from. 2062 * dp - pointer to dmap to allocate bits from.
2070 * blkno - starting block number of the bits to be allocated. 2063 * blkno - starting block number of the bits to be allocated.
2071 * nblocks - number of bits to be allocated. 2064 * nblocks - number of bits to be allocated.
2072 * 2065 *
2073 * RETURN VALUES: none 2066 * RETURN VALUES: none
2074 * 2067 *
@@ -2149,7 +2142,7 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
2149 * the allocated words. 2142 * the allocated words.
2150 */ 2143 */
2151 for (; nwords > 0; nwords -= nw) { 2144 for (; nwords > 0; nwords -= nw) {
2152 if (leaf[word] < BUDMIN) { 2145 if (leaf[word] < BUDMIN) {
2153 jfs_error(bmp->db_ipbmap->i_sb, 2146 jfs_error(bmp->db_ipbmap->i_sb,
2154 "dbAllocBits: leaf page " 2147 "dbAllocBits: leaf page "
2155 "corrupt"); 2148 "corrupt");
@@ -2202,7 +2195,7 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
2202/* 2195/*
2203 * NAME: dbFreeBits() 2196 * NAME: dbFreeBits()
2204 * 2197 *
2205 * FUNCTION: free a specified block range from a dmap. 2198 * FUNCTION: free a specified block range from a dmap.
2206 * 2199 *
2207 * this routine updates the dmap to reflect the working 2200 * this routine updates the dmap to reflect the working
2208 * state allocation of the specified block range. it directly 2201 * state allocation of the specified block range. it directly
@@ -2212,10 +2205,10 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
2212 * dmtree, as a whole, to reflect the deallocated range. 2205 * dmtree, as a whole, to reflect the deallocated range.
2213 * 2206 *
2214 * PARAMETERS: 2207 * PARAMETERS:
2215 * bmp - pointer to bmap descriptor 2208 * bmp - pointer to bmap descriptor
2216 * dp - pointer to dmap to free bits from. 2209 * dp - pointer to dmap to free bits from.
2217 * blkno - starting block number of the bits to be freed. 2210 * blkno - starting block number of the bits to be freed.
2218 * nblocks - number of bits to be freed. 2211 * nblocks - number of bits to be freed.
2219 * 2212 *
2220 * RETURN VALUES: 0 for success 2213 * RETURN VALUES: 0 for success
2221 * 2214 *
@@ -2388,19 +2381,19 @@ static int dbFreeBits(struct bmap * bmp, struct dmap * dp, s64 blkno,
2388 * the new root value and the next dmap control page level to 2381 * the new root value and the next dmap control page level to
2389 * be adjusted. 2382 * be adjusted.
2390 * PARAMETERS: 2383 * PARAMETERS:
2391 * bmp - pointer to bmap descriptor 2384 * bmp - pointer to bmap descriptor
2392 * blkno - the first block of a block range within a dmap. it is 2385 * blkno - the first block of a block range within a dmap. it is
2393 * the allocation or deallocation of this block range that 2386 * the allocation or deallocation of this block range that
2394 * requires the dmap control page to be adjusted. 2387 * requires the dmap control page to be adjusted.
2395 * newval - the new value of the lower level dmap or dmap control 2388 * newval - the new value of the lower level dmap or dmap control
2396 * page root. 2389 * page root.
2397 * alloc - 'true' if adjustment is due to an allocation. 2390 * alloc - 'true' if adjustment is due to an allocation.
2398 * level - current level of dmap control page (i.e. L0, L1, L2) to 2391 * level - current level of dmap control page (i.e. L0, L1, L2) to
2399 * be adjusted. 2392 * be adjusted.
2400 * 2393 *
2401 * RETURN VALUES: 2394 * RETURN VALUES:
2402 * 0 - success 2395 * 0 - success
2403 * -EIO - i/o error 2396 * -EIO - i/o error
2404 * 2397 *
2405 * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit; 2398 * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2406 */ 2399 */
@@ -2544,16 +2537,16 @@ dbAdjCtl(struct bmap * bmp, s64 blkno, int newval, int alloc, int level)
2544/* 2537/*
2545 * NAME: dbSplit() 2538 * NAME: dbSplit()
2546 * 2539 *
2547 * FUNCTION: update the leaf of a dmtree with a new value, splitting 2540 * FUNCTION: update the leaf of a dmtree with a new value, splitting
2548 * the leaf from the binary buddy system of the dmtree's 2541 * the leaf from the binary buddy system of the dmtree's
2549 * leaves, as required. 2542 * leaves, as required.
2550 * 2543 *
2551 * PARAMETERS: 2544 * PARAMETERS:
2552 * tp - pointer to the tree containing the leaf. 2545 * tp - pointer to the tree containing the leaf.
2553 * leafno - the number of the leaf to be updated. 2546 * leafno - the number of the leaf to be updated.
2554 * splitsz - the size the binary buddy system starting at the leaf 2547 * splitsz - the size the binary buddy system starting at the leaf
2555 * must be split to, specified as the log2 number of blocks. 2548 * must be split to, specified as the log2 number of blocks.
2556 * newval - the new value for the leaf. 2549 * newval - the new value for the leaf.
2557 * 2550 *
2558 * RETURN VALUES: none 2551 * RETURN VALUES: none
2559 * 2552 *
@@ -2600,7 +2593,7 @@ static void dbSplit(dmtree_t * tp, int leafno, int splitsz, int newval)
2600/* 2593/*
2601 * NAME: dbBackSplit() 2594 * NAME: dbBackSplit()
2602 * 2595 *
2603 * FUNCTION: back split the binary buddy system of dmtree leaves 2596 * FUNCTION: back split the binary buddy system of dmtree leaves
2604 * that hold a specified leaf until the specified leaf 2597 * that hold a specified leaf until the specified leaf
2605 * starts its own binary buddy system. 2598 * starts its own binary buddy system.
2606 * 2599 *
@@ -2617,8 +2610,8 @@ static void dbSplit(dmtree_t * tp, int leafno, int splitsz, int newval)
2617 * in which a previous join operation must be backed out. 2610 * in which a previous join operation must be backed out.
2618 * 2611 *
2619 * PARAMETERS: 2612 * PARAMETERS:
2620 * tp - pointer to the tree containing the leaf. 2613 * tp - pointer to the tree containing the leaf.
2621 * leafno - the number of the leaf to be updated. 2614 * leafno - the number of the leaf to be updated.
2622 * 2615 *
2623 * RETURN VALUES: none 2616 * RETURN VALUES: none
2624 * 2617 *
@@ -2692,14 +2685,14 @@ static int dbBackSplit(dmtree_t * tp, int leafno)
2692/* 2685/*
2693 * NAME: dbJoin() 2686 * NAME: dbJoin()
2694 * 2687 *
2695 * FUNCTION: update the leaf of a dmtree with a new value, joining 2688 * FUNCTION: update the leaf of a dmtree with a new value, joining
2696 * the leaf with other leaves of the dmtree into a multi-leaf 2689 * the leaf with other leaves of the dmtree into a multi-leaf
2697 * binary buddy system, as required. 2690 * binary buddy system, as required.
2698 * 2691 *
2699 * PARAMETERS: 2692 * PARAMETERS:
2700 * tp - pointer to the tree containing the leaf. 2693 * tp - pointer to the tree containing the leaf.
2701 * leafno - the number of the leaf to be updated. 2694 * leafno - the number of the leaf to be updated.
2702 * newval - the new value for the leaf. 2695 * newval - the new value for the leaf.
2703 * 2696 *
2704 * RETURN VALUES: none 2697 * RETURN VALUES: none
2705 */ 2698 */
@@ -2785,15 +2778,15 @@ static int dbJoin(dmtree_t * tp, int leafno, int newval)
2785/* 2778/*
2786 * NAME: dbAdjTree() 2779 * NAME: dbAdjTree()
2787 * 2780 *
2788 * FUNCTION: update a leaf of a dmtree with a new value, adjusting 2781 * FUNCTION: update a leaf of a dmtree with a new value, adjusting
2789 * the dmtree, as required, to reflect the new leaf value. 2782 * the dmtree, as required, to reflect the new leaf value.
2790 * the combination of any buddies must already be done before 2783 * the combination of any buddies must already be done before
2791 * this is called. 2784 * this is called.
2792 * 2785 *
2793 * PARAMETERS: 2786 * PARAMETERS:
2794 * tp - pointer to the tree to be adjusted. 2787 * tp - pointer to the tree to be adjusted.
2795 * leafno - the number of the leaf to be updated. 2788 * leafno - the number of the leaf to be updated.
2796 * newval - the new value for the leaf. 2789 * newval - the new value for the leaf.
2797 * 2790 *
2798 * RETURN VALUES: none 2791 * RETURN VALUES: none
2799 */ 2792 */
@@ -2852,7 +2845,7 @@ static void dbAdjTree(dmtree_t * tp, int leafno, int newval)
2852/* 2845/*
2853 * NAME: dbFindLeaf() 2846 * NAME: dbFindLeaf()
2854 * 2847 *
2855 * FUNCTION: search a dmtree_t for sufficient free blocks, returning 2848 * FUNCTION: search a dmtree_t for sufficient free blocks, returning
2856 * the index of a leaf describing the free blocks if 2849 * the index of a leaf describing the free blocks if
2857 * sufficient free blocks are found. 2850 * sufficient free blocks are found.
2858 * 2851 *
@@ -2861,15 +2854,15 @@ static void dbAdjTree(dmtree_t * tp, int leafno, int newval)
2861 * free space. 2854 * free space.
2862 * 2855 *
2863 * PARAMETERS: 2856 * PARAMETERS:
2864 * tp - pointer to the tree to be searched. 2857 * tp - pointer to the tree to be searched.
2865 * l2nb - log2 number of free blocks to search for. 2858 * l2nb - log2 number of free blocks to search for.
2866 * leafidx - return pointer to be set to the index of the leaf 2859 * leafidx - return pointer to be set to the index of the leaf
2867 * describing at least l2nb free blocks if sufficient 2860 * describing at least l2nb free blocks if sufficient
2868 * free blocks are found. 2861 * free blocks are found.
2869 * 2862 *
2870 * RETURN VALUES: 2863 * RETURN VALUES:
2871 * 0 - success 2864 * 0 - success
2872 * -ENOSPC - insufficient free blocks. 2865 * -ENOSPC - insufficient free blocks.
2873 */ 2866 */
2874static int dbFindLeaf(dmtree_t * tp, int l2nb, int *leafidx) 2867static int dbFindLeaf(dmtree_t * tp, int l2nb, int *leafidx)
2875{ 2868{
@@ -2916,18 +2909,18 @@ static int dbFindLeaf(dmtree_t * tp, int l2nb, int *leafidx)
2916/* 2909/*
2917 * NAME: dbFindBits() 2910 * NAME: dbFindBits()
2918 * 2911 *
2919 * FUNCTION: find a specified number of binary buddy free bits within a 2912 * FUNCTION: find a specified number of binary buddy free bits within a
2920 * dmap bitmap word value. 2913 * dmap bitmap word value.
2921 * 2914 *
2922 * this routine searches the bitmap value for (1 << l2nb) free 2915 * this routine searches the bitmap value for (1 << l2nb) free
2923 * bits at (1 << l2nb) alignments within the value. 2916 * bits at (1 << l2nb) alignments within the value.
2924 * 2917 *
2925 * PARAMETERS: 2918 * PARAMETERS:
2926 * word - dmap bitmap word value. 2919 * word - dmap bitmap word value.
2927 * l2nb - number of free bits specified as a log2 number. 2920 * l2nb - number of free bits specified as a log2 number.
2928 * 2921 *
2929 * RETURN VALUES: 2922 * RETURN VALUES:
2930 * starting bit number of free bits. 2923 * starting bit number of free bits.
2931 */ 2924 */
2932static int dbFindBits(u32 word, int l2nb) 2925static int dbFindBits(u32 word, int l2nb)
2933{ 2926{
@@ -2963,14 +2956,14 @@ static int dbFindBits(u32 word, int l2nb)
2963/* 2956/*
2964 * NAME: dbMaxBud(u8 *cp) 2957 * NAME: dbMaxBud(u8 *cp)
2965 * 2958 *
2966 * FUNCTION: determine the largest binary buddy string of free 2959 * FUNCTION: determine the largest binary buddy string of free
2967 * bits within 32-bits of the map. 2960 * bits within 32-bits of the map.
2968 * 2961 *
2969 * PARAMETERS: 2962 * PARAMETERS:
2970 * cp - pointer to the 32-bit value. 2963 * cp - pointer to the 32-bit value.
2971 * 2964 *
2972 * RETURN VALUES: 2965 * RETURN VALUES:
2973 * largest binary buddy of free bits within a dmap word. 2966 * largest binary buddy of free bits within a dmap word.
2974 */ 2967 */
2975static int dbMaxBud(u8 * cp) 2968static int dbMaxBud(u8 * cp)
2976{ 2969{
@@ -3000,14 +2993,14 @@ static int dbMaxBud(u8 * cp)
3000/* 2993/*
3001 * NAME: cnttz(uint word) 2994 * NAME: cnttz(uint word)
3002 * 2995 *
3003 * FUNCTION: determine the number of trailing zeros within a 32-bit 2996 * FUNCTION: determine the number of trailing zeros within a 32-bit
3004 * value. 2997 * value.
3005 * 2998 *
3006 * PARAMETERS: 2999 * PARAMETERS:
3007 * value - 32-bit value to be examined. 3000 * value - 32-bit value to be examined.
3008 * 3001 *
3009 * RETURN VALUES: 3002 * RETURN VALUES:
3010 * count of trailing zeros 3003 * count of trailing zeros
3011 */ 3004 */
3012static int cnttz(u32 word) 3005static int cnttz(u32 word)
3013{ 3006{
@@ -3025,14 +3018,14 @@ static int cnttz(u32 word)
3025/* 3018/*
3026 * NAME: cntlz(u32 value) 3019 * NAME: cntlz(u32 value)
3027 * 3020 *
3028 * FUNCTION: determine the number of leading zeros within a 32-bit 3021 * FUNCTION: determine the number of leading zeros within a 32-bit
3029 * value. 3022 * value.
3030 * 3023 *
3031 * PARAMETERS: 3024 * PARAMETERS:
3032 * value - 32-bit value to be examined. 3025 * value - 32-bit value to be examined.
3033 * 3026 *
3034 * RETURN VALUES: 3027 * RETURN VALUES:
3035 * count of leading zeros 3028 * count of leading zeros
3036 */ 3029 */
3037static int cntlz(u32 value) 3030static int cntlz(u32 value)
3038{ 3031{
@@ -3050,14 +3043,14 @@ static int cntlz(u32 value)
3050 * NAME: blkstol2(s64 nb) 3043 * NAME: blkstol2(s64 nb)
3051 * 3044 *
3052 * FUNCTION: convert a block count to its log2 value. if the block 3045 * FUNCTION: convert a block count to its log2 value. if the block
3053 * count is not a l2 multiple, it is rounded up to the next 3046 * count is not a l2 multiple, it is rounded up to the next
3054 * larger l2 multiple. 3047 * larger l2 multiple.
3055 * 3048 *
3056 * PARAMETERS: 3049 * PARAMETERS:
3057 * nb - number of blocks 3050 * nb - number of blocks
3058 * 3051 *
3059 * RETURN VALUES: 3052 * RETURN VALUES:
3060 * log2 number of blocks 3053 * log2 number of blocks
3061 */ 3054 */
3062static int blkstol2(s64 nb) 3055static int blkstol2(s64 nb)
3063{ 3056{
@@ -3099,13 +3092,13 @@ static int blkstol2(s64 nb)
3099 * at a time. 3092 * at a time.
3100 * 3093 *
3101 * PARAMETERS: 3094 * PARAMETERS:
3102 * ip - pointer to in-core inode; 3095 * ip - pointer to in-core inode;
3103 * blkno - starting block number to be freed. 3096 * blkno - starting block number to be freed.
3104 * nblocks - number of blocks to be freed. 3097 * nblocks - number of blocks to be freed.
3105 * 3098 *
3106 * RETURN VALUES: 3099 * RETURN VALUES:
3107 * 0 - success 3100 * 0 - success
3108 * -EIO - i/o error 3101 * -EIO - i/o error
3109 */ 3102 */
3110int dbAllocBottomUp(struct inode *ip, s64 blkno, s64 nblocks) 3103int dbAllocBottomUp(struct inode *ip, s64 blkno, s64 nblocks)
3111{ 3104{
@@ -3278,10 +3271,10 @@ static int dbAllocDmapBU(struct bmap * bmp, struct dmap * dp, s64 blkno,
3278 * L2 3271 * L2
3279 * | 3272 * |
3280 * L1---------------------------------L1 3273 * L1---------------------------------L1
3281 * | | 3274 * | |
3282 * L0---------L0---------L0 L0---------L0---------L0 3275 * L0---------L0---------L0 L0---------L0---------L0
3283 * | | | | | | 3276 * | | | | | |
3284 * d0,...,dn d0,...,dn d0,...,dn d0,...,dn d0,...,dn d0,.,dm; 3277 * d0,...,dn d0,...,dn d0,...,dn d0,...,dn d0,...,dn d0,.,dm;
3285 * L2L1L0d0,...,dnL0d0,...,dnL0d0,...,dnL1L0d0,...,dnL0d0,...,dnL0d0,..dm 3278 * L2L1L0d0,...,dnL0d0,...,dnL0d0,...,dnL1L0d0,...,dnL0d0,...,dnL0d0,..dm
3286 * 3279 *
3287 * <---old---><----------------------------extend-----------------------> 3280 * <---old---><----------------------------extend----------------------->
@@ -3307,7 +3300,7 @@ int dbExtendFS(struct inode *ipbmap, s64 blkno, s64 nblocks)
3307 (long long) blkno, (long long) nblocks, (long long) newsize); 3300 (long long) blkno, (long long) nblocks, (long long) newsize);
3308 3301
3309 /* 3302 /*
3310 * initialize bmap control page. 3303 * initialize bmap control page.
3311 * 3304 *
3312 * all the data in bmap control page should exclude 3305 * all the data in bmap control page should exclude
3313 * the mkfs hidden dmap page. 3306 * the mkfs hidden dmap page.
@@ -3330,7 +3323,7 @@ int dbExtendFS(struct inode *ipbmap, s64 blkno, s64 nblocks)
3330 bmp->db_numag += ((u32) newsize % (u32) bmp->db_agsize) ? 1 : 0; 3323 bmp->db_numag += ((u32) newsize % (u32) bmp->db_agsize) ? 1 : 0;
3331 3324
3332 /* 3325 /*
3333 * reconfigure db_agfree[] 3326 * reconfigure db_agfree[]
3334 * from old AG configuration to new AG configuration; 3327 * from old AG configuration to new AG configuration;
3335 * 3328 *
3336 * coalesce contiguous k (newAGSize/oldAGSize) AGs; 3329 * coalesce contiguous k (newAGSize/oldAGSize) AGs;
@@ -3362,7 +3355,7 @@ int dbExtendFS(struct inode *ipbmap, s64 blkno, s64 nblocks)
3362 bmp->db_maxag = bmp->db_maxag / k; 3355 bmp->db_maxag = bmp->db_maxag / k;
3363 3356
3364 /* 3357 /*
3365 * extend bmap 3358 * extend bmap
3366 * 3359 *
3367 * update bit maps and corresponding level control pages; 3360 * update bit maps and corresponding level control pages;
3368 * global control page db_nfree, db_agfree[agno], db_maxfreebud; 3361 * global control page db_nfree, db_agfree[agno], db_maxfreebud;
@@ -3410,7 +3403,7 @@ int dbExtendFS(struct inode *ipbmap, s64 blkno, s64 nblocks)
3410 /* compute start L0 */ 3403 /* compute start L0 */
3411 j = 0; 3404 j = 0;
3412 l1leaf = l1dcp->stree + CTLLEAFIND; 3405 l1leaf = l1dcp->stree + CTLLEAFIND;
3413 p += nbperpage; /* 1st L0 of L1.k */ 3406 p += nbperpage; /* 1st L0 of L1.k */
3414 } 3407 }
3415 3408
3416 /* 3409 /*
@@ -3548,7 +3541,7 @@ errout:
3548 return -EIO; 3541 return -EIO;
3549 3542
3550 /* 3543 /*
3551 * finalize bmap control page 3544 * finalize bmap control page
3552 */ 3545 */
3553finalize: 3546finalize:
3554 3547
@@ -3567,7 +3560,7 @@ void dbFinalizeBmap(struct inode *ipbmap)
3567 int i, n; 3560 int i, n;
3568 3561
3569 /* 3562 /*
3570 * finalize bmap control page 3563 * finalize bmap control page
3571 */ 3564 */
3572//finalize: 3565//finalize:
3573 /* 3566 /*
@@ -3953,8 +3946,8 @@ static int dbGetL2AGSize(s64 nblocks)
3953 * convert number of map pages to the zero origin top dmapctl level 3946 * convert number of map pages to the zero origin top dmapctl level
3954 */ 3947 */
3955#define BMAPPGTOLEV(npages) \ 3948#define BMAPPGTOLEV(npages) \
3956 (((npages) <= 3 + MAXL0PAGES) ? 0 \ 3949 (((npages) <= 3 + MAXL0PAGES) ? 0 : \
3957 : ((npages) <= 2 + MAXL1PAGES) ? 1 : 2) 3950 ((npages) <= 2 + MAXL1PAGES) ? 1 : 2)
3958 3951
3959s64 dbMapFileSizeToMapSize(struct inode * ipbmap) 3952s64 dbMapFileSizeToMapSize(struct inode * ipbmap)
3960{ 3953{
@@ -3981,8 +3974,8 @@ s64 dbMapFileSizeToMapSize(struct inode * ipbmap)
3981 factor = 3974 factor =
3982 (i == 2) ? MAXL1PAGES : ((i == 1) ? MAXL0PAGES : 1); 3975 (i == 2) ? MAXL1PAGES : ((i == 1) ? MAXL0PAGES : 1);
3983 complete = (u32) npages / factor; 3976 complete = (u32) npages / factor;
3984 ndmaps += complete * ((i == 2) ? LPERCTL * LPERCTL 3977 ndmaps += complete * ((i == 2) ? LPERCTL * LPERCTL :
3985 : ((i == 1) ? LPERCTL : 1)); 3978 ((i == 1) ? LPERCTL : 1));
3986 3979
3987 /* pages in last/incomplete child */ 3980 /* pages in last/incomplete child */
3988 npages = (u32) npages % factor; 3981 npages = (u32) npages % factor;
diff --git a/fs/jfs/jfs_dmap.h b/fs/jfs/jfs_dmap.h
index 45ea454c74bd..11e6d471b364 100644
--- a/fs/jfs/jfs_dmap.h
+++ b/fs/jfs/jfs_dmap.h
@@ -83,7 +83,7 @@ static __inline signed char TREEMAX(signed char *cp)
83 * - 1 is added to account for the control page of the map. 83 * - 1 is added to account for the control page of the map.
84 */ 84 */
85#define BLKTODMAP(b,s) \ 85#define BLKTODMAP(b,s) \
86 ((((b) >> 13) + ((b) >> 23) + ((b) >> 33) + 3 + 1) << (s)) 86 ((((b) >> 13) + ((b) >> 23) + ((b) >> 33) + 3 + 1) << (s))
87 87
88/* 88/*
89 * convert disk block number to the logical block number of the LEVEL 0 89 * convert disk block number to the logical block number of the LEVEL 0
@@ -98,7 +98,7 @@ static __inline signed char TREEMAX(signed char *cp)
98 * - 1 is added to account for the control page of the map. 98 * - 1 is added to account for the control page of the map.
99 */ 99 */
100#define BLKTOL0(b,s) \ 100#define BLKTOL0(b,s) \
101 (((((b) >> 23) << 10) + ((b) >> 23) + ((b) >> 33) + 2 + 1) << (s)) 101 (((((b) >> 23) << 10) + ((b) >> 23) + ((b) >> 33) + 2 + 1) << (s))
102 102
103/* 103/*
104 * convert disk block number to the logical block number of the LEVEL 1 104 * convert disk block number to the logical block number of the LEVEL 1
@@ -120,7 +120,7 @@ static __inline signed char TREEMAX(signed char *cp)
120 * at the specified level which describes the disk block. 120 * at the specified level which describes the disk block.
121 */ 121 */
122#define BLKTOCTL(b,s,l) \ 122#define BLKTOCTL(b,s,l) \
123 (((l) == 2) ? 1 : ((l) == 1) ? BLKTOL1((b),(s)) : BLKTOL0((b),(s))) 123 (((l) == 2) ? 1 : ((l) == 1) ? BLKTOL1((b),(s)) : BLKTOL0((b),(s)))
124 124
125/* 125/*
126 * convert aggregate map size to the zero origin dmapctl level of the 126 * convert aggregate map size to the zero origin dmapctl level of the
@@ -145,27 +145,27 @@ static __inline signed char TREEMAX(signed char *cp)
145 * dmaptree must be consistent with dmapctl. 145 * dmaptree must be consistent with dmapctl.
146 */ 146 */
147struct dmaptree { 147struct dmaptree {
148 __le32 nleafs; /* 4: number of tree leafs */ 148 __le32 nleafs; /* 4: number of tree leafs */
149 __le32 l2nleafs; /* 4: l2 number of tree leafs */ 149 __le32 l2nleafs; /* 4: l2 number of tree leafs */
150 __le32 leafidx; /* 4: index of first tree leaf */ 150 __le32 leafidx; /* 4: index of first tree leaf */
151 __le32 height; /* 4: height of the tree */ 151 __le32 height; /* 4: height of the tree */
152 s8 budmin; /* 1: min l2 tree leaf value to combine */ 152 s8 budmin; /* 1: min l2 tree leaf value to combine */
153 s8 stree[TREESIZE]; /* TREESIZE: tree */ 153 s8 stree[TREESIZE]; /* TREESIZE: tree */
154 u8 pad[2]; /* 2: pad to word boundary */ 154 u8 pad[2]; /* 2: pad to word boundary */
155}; /* - 360 - */ 155}; /* - 360 - */
156 156
157/* 157/*
158 * dmap page per 8K blocks bitmap 158 * dmap page per 8K blocks bitmap
159 */ 159 */
160struct dmap { 160struct dmap {
161 __le32 nblocks; /* 4: num blks covered by this dmap */ 161 __le32 nblocks; /* 4: num blks covered by this dmap */
162 __le32 nfree; /* 4: num of free blks in this dmap */ 162 __le32 nfree; /* 4: num of free blks in this dmap */
163 __le64 start; /* 8: starting blkno for this dmap */ 163 __le64 start; /* 8: starting blkno for this dmap */
164 struct dmaptree tree; /* 360: dmap tree */ 164 struct dmaptree tree; /* 360: dmap tree */
165 u8 pad[1672]; /* 1672: pad to 2048 bytes */ 165 u8 pad[1672]; /* 1672: pad to 2048 bytes */
166 __le32 wmap[LPERDMAP]; /* 1024: bits of the working map */ 166 __le32 wmap[LPERDMAP]; /* 1024: bits of the working map */
167 __le32 pmap[LPERDMAP]; /* 1024: bits of the persistent map */ 167 __le32 pmap[LPERDMAP]; /* 1024: bits of the persistent map */
168}; /* - 4096 - */ 168}; /* - 4096 - */
169 169
170/* 170/*
171 * disk map control page per level. 171 * disk map control page per level.
@@ -173,14 +173,14 @@ struct dmap {
173 * dmapctl must be consistent with dmaptree. 173 * dmapctl must be consistent with dmaptree.
174 */ 174 */
175struct dmapctl { 175struct dmapctl {
176 __le32 nleafs; /* 4: number of tree leafs */ 176 __le32 nleafs; /* 4: number of tree leafs */
177 __le32 l2nleafs; /* 4: l2 number of tree leafs */ 177 __le32 l2nleafs; /* 4: l2 number of tree leafs */
178 __le32 leafidx; /* 4: index of the first tree leaf */ 178 __le32 leafidx; /* 4: index of the first tree leaf */
179 __le32 height; /* 4: height of tree */ 179 __le32 height; /* 4: height of tree */
180 s8 budmin; /* 1: minimum l2 tree leaf value */ 180 s8 budmin; /* 1: minimum l2 tree leaf value */
181 s8 stree[CTLTREESIZE]; /* CTLTREESIZE: dmapctl tree */ 181 s8 stree[CTLTREESIZE]; /* CTLTREESIZE: dmapctl tree */
182 u8 pad[2714]; /* 2714: pad to 4096 */ 182 u8 pad[2714]; /* 2714: pad to 4096 */
183}; /* - 4096 - */ 183}; /* - 4096 - */
184 184
185/* 185/*
186 * common definition for dmaptree within dmap and dmapctl 186 * common definition for dmaptree within dmap and dmapctl
@@ -202,41 +202,41 @@ typedef union dmtree {
202 * on-disk aggregate disk allocation map descriptor. 202 * on-disk aggregate disk allocation map descriptor.
203 */ 203 */
204struct dbmap_disk { 204struct dbmap_disk {
205 __le64 dn_mapsize; /* 8: number of blocks in aggregate */ 205 __le64 dn_mapsize; /* 8: number of blocks in aggregate */
206 __le64 dn_nfree; /* 8: num free blks in aggregate map */ 206 __le64 dn_nfree; /* 8: num free blks in aggregate map */
207 __le32 dn_l2nbperpage; /* 4: number of blks per page */ 207 __le32 dn_l2nbperpage; /* 4: number of blks per page */
208 __le32 dn_numag; /* 4: total number of ags */ 208 __le32 dn_numag; /* 4: total number of ags */
209 __le32 dn_maxlevel; /* 4: number of active ags */ 209 __le32 dn_maxlevel; /* 4: number of active ags */
210 __le32 dn_maxag; /* 4: max active alloc group number */ 210 __le32 dn_maxag; /* 4: max active alloc group number */
211 __le32 dn_agpref; /* 4: preferred alloc group (hint) */ 211 __le32 dn_agpref; /* 4: preferred alloc group (hint) */
212 __le32 dn_aglevel; /* 4: dmapctl level holding the AG */ 212 __le32 dn_aglevel; /* 4: dmapctl level holding the AG */
213 __le32 dn_agheigth; /* 4: height in dmapctl of the AG */ 213 __le32 dn_agheigth; /* 4: height in dmapctl of the AG */
214 __le32 dn_agwidth; /* 4: width in dmapctl of the AG */ 214 __le32 dn_agwidth; /* 4: width in dmapctl of the AG */
215 __le32 dn_agstart; /* 4: start tree index at AG height */ 215 __le32 dn_agstart; /* 4: start tree index at AG height */
216 __le32 dn_agl2size; /* 4: l2 num of blks per alloc group */ 216 __le32 dn_agl2size; /* 4: l2 num of blks per alloc group */
217 __le64 dn_agfree[MAXAG];/* 8*MAXAG: per AG free count */ 217 __le64 dn_agfree[MAXAG];/* 8*MAXAG: per AG free count */
218 __le64 dn_agsize; /* 8: num of blks per alloc group */ 218 __le64 dn_agsize; /* 8: num of blks per alloc group */
219 s8 dn_maxfreebud; /* 1: max free buddy system */ 219 s8 dn_maxfreebud; /* 1: max free buddy system */
220 u8 pad[3007]; /* 3007: pad to 4096 */ 220 u8 pad[3007]; /* 3007: pad to 4096 */
221}; /* - 4096 - */ 221}; /* - 4096 - */
222 222
223struct dbmap { 223struct dbmap {
224 s64 dn_mapsize; /* number of blocks in aggregate */ 224 s64 dn_mapsize; /* number of blocks in aggregate */
225 s64 dn_nfree; /* num free blks in aggregate map */ 225 s64 dn_nfree; /* num free blks in aggregate map */
226 int dn_l2nbperpage; /* number of blks per page */ 226 int dn_l2nbperpage; /* number of blks per page */
227 int dn_numag; /* total number of ags */ 227 int dn_numag; /* total number of ags */
228 int dn_maxlevel; /* number of active ags */ 228 int dn_maxlevel; /* number of active ags */
229 int dn_maxag; /* max active alloc group number */ 229 int dn_maxag; /* max active alloc group number */
230 int dn_agpref; /* preferred alloc group (hint) */ 230 int dn_agpref; /* preferred alloc group (hint) */
231 int dn_aglevel; /* dmapctl level holding the AG */ 231 int dn_aglevel; /* dmapctl level holding the AG */
232 int dn_agheigth; /* height in dmapctl of the AG */ 232 int dn_agheigth; /* height in dmapctl of the AG */
233 int dn_agwidth; /* width in dmapctl of the AG */ 233 int dn_agwidth; /* width in dmapctl of the AG */
234 int dn_agstart; /* start tree index at AG height */ 234 int dn_agstart; /* start tree index at AG height */
235 int dn_agl2size; /* l2 num of blks per alloc group */ 235 int dn_agl2size; /* l2 num of blks per alloc group */
236 s64 dn_agfree[MAXAG]; /* per AG free count */ 236 s64 dn_agfree[MAXAG]; /* per AG free count */
237 s64 dn_agsize; /* num of blks per alloc group */ 237 s64 dn_agsize; /* num of blks per alloc group */
238 signed char dn_maxfreebud; /* max free buddy system */ 238 signed char dn_maxfreebud; /* max free buddy system */
239}; /* - 4096 - */ 239}; /* - 4096 - */
240/* 240/*
241 * in-memory aggregate disk allocation map descriptor. 241 * in-memory aggregate disk allocation map descriptor.
242 */ 242 */
diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c
index 6d62f3222892..c14ba3cfa818 100644
--- a/fs/jfs/jfs_dtree.c
+++ b/fs/jfs/jfs_dtree.c
@@ -315,8 +315,8 @@ static inline void lock_index(tid_t tid, struct inode *ip, struct metapage * mp,
315 lv = &llck->lv[llck->index]; 315 lv = &llck->lv[llck->index];
316 316
317 /* 317 /*
318 * Linelock slot size is twice the size of directory table 318 * Linelock slot size is twice the size of directory table
319 * slot size. 512 entries per page. 319 * slot size. 512 entries per page.
320 */ 320 */
321 lv->offset = ((index - 2) & 511) >> 1; 321 lv->offset = ((index - 2) & 511) >> 1;
322 lv->length = 1; 322 lv->length = 1;
@@ -615,7 +615,7 @@ int dtSearch(struct inode *ip, struct component_name * key, ino_t * data,
615 btstack->nsplit = 1; 615 btstack->nsplit = 1;
616 616
617 /* 617 /*
618 * search down tree from root: 618 * search down tree from root:
619 * 619 *
620 * between two consecutive entries of <Ki, Pi> and <Kj, Pj> of 620 * between two consecutive entries of <Ki, Pi> and <Kj, Pj> of
621 * internal page, child page Pi contains entry with k, Ki <= K < Kj. 621 * internal page, child page Pi contains entry with k, Ki <= K < Kj.
@@ -659,7 +659,7 @@ int dtSearch(struct inode *ip, struct component_name * key, ino_t * data,
659 } 659 }
660 if (cmp == 0) { 660 if (cmp == 0) {
661 /* 661 /*
662 * search hit 662 * search hit
663 */ 663 */
664 /* search hit - leaf page: 664 /* search hit - leaf page:
665 * return the entry found 665 * return the entry found
@@ -723,7 +723,7 @@ int dtSearch(struct inode *ip, struct component_name * key, ino_t * data,
723 } 723 }
724 724
725 /* 725 /*
726 * search miss 726 * search miss
727 * 727 *
728 * base is the smallest index with key (Kj) greater than 728 * base is the smallest index with key (Kj) greater than
729 * search key (K) and may be zero or (maxindex + 1) index. 729 * search key (K) and may be zero or (maxindex + 1) index.
@@ -834,7 +834,7 @@ int dtInsert(tid_t tid, struct inode *ip,
834 struct lv *lv; 834 struct lv *lv;
835 835
836 /* 836 /*
837 * retrieve search result 837 * retrieve search result
838 * 838 *
839 * dtSearch() returns (leaf page pinned, index at which to insert). 839 * dtSearch() returns (leaf page pinned, index at which to insert).
840 * n.b. dtSearch() may return index of (maxindex + 1) of 840 * n.b. dtSearch() may return index of (maxindex + 1) of
@@ -843,7 +843,7 @@ int dtInsert(tid_t tid, struct inode *ip,
843 DT_GETSEARCH(ip, btstack->top, bn, mp, p, index); 843 DT_GETSEARCH(ip, btstack->top, bn, mp, p, index);
844 844
845 /* 845 /*
846 * insert entry for new key 846 * insert entry for new key
847 */ 847 */
848 if (DO_INDEX(ip)) { 848 if (DO_INDEX(ip)) {
849 if (JFS_IP(ip)->next_index == DIREND) { 849 if (JFS_IP(ip)->next_index == DIREND) {
@@ -860,9 +860,9 @@ int dtInsert(tid_t tid, struct inode *ip,
860 data.leaf.ino = *fsn; 860 data.leaf.ino = *fsn;
861 861
862 /* 862 /*
863 * leaf page does not have enough room for new entry: 863 * leaf page does not have enough room for new entry:
864 * 864 *
865 * extend/split the leaf page; 865 * extend/split the leaf page;
866 * 866 *
867 * dtSplitUp() will insert the entry and unpin the leaf page. 867 * dtSplitUp() will insert the entry and unpin the leaf page.
868 */ 868 */
@@ -877,9 +877,9 @@ int dtInsert(tid_t tid, struct inode *ip,
877 } 877 }
878 878
879 /* 879 /*
880 * leaf page does have enough room for new entry: 880 * leaf page does have enough room for new entry:
881 * 881 *
882 * insert the new data entry into the leaf page; 882 * insert the new data entry into the leaf page;
883 */ 883 */
884 BT_MARK_DIRTY(mp, ip); 884 BT_MARK_DIRTY(mp, ip);
885 /* 885 /*
@@ -967,13 +967,13 @@ static int dtSplitUp(tid_t tid,
967 } 967 }
968 968
969 /* 969 /*
970 * split leaf page 970 * split leaf page
971 * 971 *
972 * The split routines insert the new entry, and 972 * The split routines insert the new entry, and
973 * acquire txLock as appropriate. 973 * acquire txLock as appropriate.
974 */ 974 */
975 /* 975 /*
976 * split root leaf page: 976 * split root leaf page:
977 */ 977 */
978 if (sp->header.flag & BT_ROOT) { 978 if (sp->header.flag & BT_ROOT) {
979 /* 979 /*
@@ -1012,7 +1012,7 @@ static int dtSplitUp(tid_t tid,
1012 } 1012 }
1013 1013
1014 /* 1014 /*
1015 * extend first leaf page 1015 * extend first leaf page
1016 * 1016 *
1017 * extend the 1st extent if less than buffer page size 1017 * extend the 1st extent if less than buffer page size
1018 * (dtExtendPage() reurns leaf page unpinned) 1018 * (dtExtendPage() reurns leaf page unpinned)
@@ -1068,7 +1068,7 @@ static int dtSplitUp(tid_t tid,
1068 } 1068 }
1069 1069
1070 /* 1070 /*
1071 * split leaf page <sp> into <sp> and a new right page <rp>. 1071 * split leaf page <sp> into <sp> and a new right page <rp>.
1072 * 1072 *
1073 * return <rp> pinned and its extent descriptor <rpxd> 1073 * return <rp> pinned and its extent descriptor <rpxd>
1074 */ 1074 */
@@ -1433,7 +1433,7 @@ static int dtSplitPage(tid_t tid, struct inode *ip, struct dtsplit * split,
1433 rp->header.freecnt = rp->header.maxslot - fsi; 1433 rp->header.freecnt = rp->header.maxslot - fsi;
1434 1434
1435 /* 1435 /*
1436 * sequential append at tail: append without split 1436 * sequential append at tail: append without split
1437 * 1437 *
1438 * If splitting the last page on a level because of appending 1438 * If splitting the last page on a level because of appending
1439 * a entry to it (skip is maxentry), it's likely that the access is 1439 * a entry to it (skip is maxentry), it's likely that the access is
@@ -1467,7 +1467,7 @@ static int dtSplitPage(tid_t tid, struct inode *ip, struct dtsplit * split,
1467 } 1467 }
1468 1468
1469 /* 1469 /*
1470 * non-sequential insert (at possibly middle page) 1470 * non-sequential insert (at possibly middle page)
1471 */ 1471 */
1472 1472
1473 /* 1473 /*
@@ -1508,7 +1508,7 @@ static int dtSplitPage(tid_t tid, struct inode *ip, struct dtsplit * split,
1508 left = 0; 1508 left = 0;
1509 1509
1510 /* 1510 /*
1511 * compute fill factor for split pages 1511 * compute fill factor for split pages
1512 * 1512 *
1513 * <nxt> traces the next entry to move to rp 1513 * <nxt> traces the next entry to move to rp
1514 * <off> traces the next entry to stay in sp 1514 * <off> traces the next entry to stay in sp
@@ -1551,7 +1551,7 @@ static int dtSplitPage(tid_t tid, struct inode *ip, struct dtsplit * split,
1551 /* <nxt> poins to the 1st entry to move */ 1551 /* <nxt> poins to the 1st entry to move */
1552 1552
1553 /* 1553 /*
1554 * move entries to right page 1554 * move entries to right page
1555 * 1555 *
1556 * dtMoveEntry() initializes rp and reserves entry for insertion 1556 * dtMoveEntry() initializes rp and reserves entry for insertion
1557 * 1557 *
@@ -1677,7 +1677,7 @@ static int dtExtendPage(tid_t tid,
1677 return (rc); 1677 return (rc);
1678 1678
1679 /* 1679 /*
1680 * extend the extent 1680 * extend the extent
1681 */ 1681 */
1682 pxdlist = split->pxdlist; 1682 pxdlist = split->pxdlist;
1683 pxd = &pxdlist->pxd[pxdlist->npxd]; 1683 pxd = &pxdlist->pxd[pxdlist->npxd];
@@ -1722,7 +1722,7 @@ static int dtExtendPage(tid_t tid,
1722 } 1722 }
1723 1723
1724 /* 1724 /*
1725 * extend the page 1725 * extend the page
1726 */ 1726 */
1727 sp->header.self = *pxd; 1727 sp->header.self = *pxd;
1728 1728
@@ -1739,9 +1739,6 @@ static int dtExtendPage(tid_t tid,
1739 /* update buffer extent descriptor of extended page */ 1739 /* update buffer extent descriptor of extended page */
1740 xlen = lengthPXD(pxd); 1740 xlen = lengthPXD(pxd);
1741 xsize = xlen << JFS_SBI(sb)->l2bsize; 1741 xsize = xlen << JFS_SBI(sb)->l2bsize;
1742#ifdef _STILL_TO_PORT
1743 bmSetXD(smp, xaddr, xsize);
1744#endif /* _STILL_TO_PORT */
1745 1742
1746 /* 1743 /*
1747 * copy old stbl to new stbl at start of extended area 1744 * copy old stbl to new stbl at start of extended area
@@ -1836,7 +1833,7 @@ static int dtExtendPage(tid_t tid,
1836 } 1833 }
1837 1834
1838 /* 1835 /*
1839 * update parent entry on the parent/root page 1836 * update parent entry on the parent/root page
1840 */ 1837 */
1841 /* 1838 /*
1842 * acquire a transaction lock on the parent/root page 1839 * acquire a transaction lock on the parent/root page
@@ -1904,7 +1901,7 @@ static int dtSplitRoot(tid_t tid,
1904 sp = &JFS_IP(ip)->i_dtroot; 1901 sp = &JFS_IP(ip)->i_dtroot;
1905 1902
1906 /* 1903 /*
1907 * allocate/initialize a single (right) child page 1904 * allocate/initialize a single (right) child page
1908 * 1905 *
1909 * N.B. at first split, a one (or two) block to fit new entry 1906 * N.B. at first split, a one (or two) block to fit new entry
1910 * is allocated; at subsequent split, a full page is allocated; 1907 * is allocated; at subsequent split, a full page is allocated;
@@ -1943,7 +1940,7 @@ static int dtSplitRoot(tid_t tid,
1943 rp->header.prev = 0; 1940 rp->header.prev = 0;
1944 1941
1945 /* 1942 /*
1946 * move in-line root page into new right page extent 1943 * move in-line root page into new right page extent
1947 */ 1944 */
1948 /* linelock header + copied entries + new stbl (1st slot) in new page */ 1945 /* linelock header + copied entries + new stbl (1st slot) in new page */
1949 ASSERT(dtlck->index == 0); 1946 ASSERT(dtlck->index == 0);
@@ -2016,7 +2013,7 @@ static int dtSplitRoot(tid_t tid,
2016 dtInsertEntry(rp, split->index, split->key, split->data, &dtlck); 2013 dtInsertEntry(rp, split->index, split->key, split->data, &dtlck);
2017 2014
2018 /* 2015 /*
2019 * reset parent/root page 2016 * reset parent/root page
2020 * 2017 *
2021 * set the 1st entry offset to 0, which force the left-most key 2018 * set the 1st entry offset to 0, which force the left-most key
2022 * at any level of the tree to be less than any search key. 2019 * at any level of the tree to be less than any search key.
@@ -2102,7 +2099,7 @@ int dtDelete(tid_t tid,
2102 dtpage_t *np; 2099 dtpage_t *np;
2103 2100
2104 /* 2101 /*
2105 * search for the entry to delete: 2102 * search for the entry to delete:
2106 * 2103 *
2107 * dtSearch() returns (leaf page pinned, index at which to delete). 2104 * dtSearch() returns (leaf page pinned, index at which to delete).
2108 */ 2105 */
@@ -2253,7 +2250,7 @@ static int dtDeleteUp(tid_t tid, struct inode *ip,
2253 int i; 2250 int i;
2254 2251
2255 /* 2252 /*
2256 * keep the root leaf page which has become empty 2253 * keep the root leaf page which has become empty
2257 */ 2254 */
2258 if (BT_IS_ROOT(fmp)) { 2255 if (BT_IS_ROOT(fmp)) {
2259 /* 2256 /*
@@ -2269,7 +2266,7 @@ static int dtDeleteUp(tid_t tid, struct inode *ip,
2269 } 2266 }
2270 2267
2271 /* 2268 /*
2272 * free the non-root leaf page 2269 * free the non-root leaf page
2273 */ 2270 */
2274 /* 2271 /*
2275 * acquire a transaction lock on the page 2272 * acquire a transaction lock on the page
@@ -2299,7 +2296,7 @@ static int dtDeleteUp(tid_t tid, struct inode *ip,
2299 discard_metapage(fmp); 2296 discard_metapage(fmp);
2300 2297
2301 /* 2298 /*
2302 * propagate page deletion up the directory tree 2299 * propagate page deletion up the directory tree
2303 * 2300 *
2304 * If the delete from the parent page makes it empty, 2301 * If the delete from the parent page makes it empty,
2305 * continue all the way up the tree. 2302 * continue all the way up the tree.
@@ -2440,10 +2437,10 @@ static int dtDeleteUp(tid_t tid, struct inode *ip,
2440 2437
2441#ifdef _NOTYET 2438#ifdef _NOTYET
2442/* 2439/*
2443 * NAME: dtRelocate() 2440 * NAME: dtRelocate()
2444 * 2441 *
2445 * FUNCTION: relocate dtpage (internal or leaf) of directory; 2442 * FUNCTION: relocate dtpage (internal or leaf) of directory;
2446 * This function is mainly used by defragfs utility. 2443 * This function is mainly used by defragfs utility.
2447 */ 2444 */
2448int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd, 2445int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
2449 s64 nxaddr) 2446 s64 nxaddr)
@@ -2471,8 +2468,8 @@ int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
2471 xlen); 2468 xlen);
2472 2469
2473 /* 2470 /*
2474 * 1. get the internal parent dtpage covering 2471 * 1. get the internal parent dtpage covering
2475 * router entry for the tartget page to be relocated; 2472 * router entry for the tartget page to be relocated;
2476 */ 2473 */
2477 rc = dtSearchNode(ip, lmxaddr, opxd, &btstack); 2474 rc = dtSearchNode(ip, lmxaddr, opxd, &btstack);
2478 if (rc) 2475 if (rc)
@@ -2483,7 +2480,7 @@ int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
2483 jfs_info("dtRelocate: parent router entry validated."); 2480 jfs_info("dtRelocate: parent router entry validated.");
2484 2481
2485 /* 2482 /*
2486 * 2. relocate the target dtpage 2483 * 2. relocate the target dtpage
2487 */ 2484 */
2488 /* read in the target page from src extent */ 2485 /* read in the target page from src extent */
2489 DT_GETPAGE(ip, oxaddr, mp, PSIZE, p, rc); 2486 DT_GETPAGE(ip, oxaddr, mp, PSIZE, p, rc);
@@ -2581,9 +2578,7 @@ int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
2581 2578
2582 /* update the buffer extent descriptor of the dtpage */ 2579 /* update the buffer extent descriptor of the dtpage */
2583 xsize = xlen << JFS_SBI(ip->i_sb)->l2bsize; 2580 xsize = xlen << JFS_SBI(ip->i_sb)->l2bsize;
2584#ifdef _STILL_TO_PORT 2581
2585 bmSetXD(mp, nxaddr, xsize);
2586#endif /* _STILL_TO_PORT */
2587 /* unpin the relocated page */ 2582 /* unpin the relocated page */
2588 DT_PUTPAGE(mp); 2583 DT_PUTPAGE(mp);
2589 jfs_info("dtRelocate: target dtpage relocated."); 2584 jfs_info("dtRelocate: target dtpage relocated.");
@@ -2594,7 +2589,7 @@ int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
2594 */ 2589 */
2595 2590
2596 /* 2591 /*
2597 * 3. acquire maplock for the source extent to be freed; 2592 * 3. acquire maplock for the source extent to be freed;
2598 */ 2593 */
2599 /* for dtpage relocation, write a LOG_NOREDOPAGE record 2594 /* for dtpage relocation, write a LOG_NOREDOPAGE record
2600 * for the source dtpage (logredo() will init NoRedoPage 2595 * for the source dtpage (logredo() will init NoRedoPage
@@ -2609,7 +2604,7 @@ int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
2609 pxdlock->index = 1; 2604 pxdlock->index = 1;
2610 2605
2611 /* 2606 /*
2612 * 4. update the parent router entry for relocation; 2607 * 4. update the parent router entry for relocation;
2613 * 2608 *
2614 * acquire tlck for the parent entry covering the target dtpage; 2609 * acquire tlck for the parent entry covering the target dtpage;
2615 * write LOG_REDOPAGE to apply after image only; 2610 * write LOG_REDOPAGE to apply after image only;
@@ -2637,7 +2632,7 @@ int dtRelocate(tid_t tid, struct inode *ip, s64 lmxaddr, pxd_t * opxd,
2637 * NAME: dtSearchNode() 2632 * NAME: dtSearchNode()
2638 * 2633 *
2639 * FUNCTION: Search for an dtpage containing a specified address 2634 * FUNCTION: Search for an dtpage containing a specified address
2640 * This function is mainly used by defragfs utility. 2635 * This function is mainly used by defragfs utility.
2641 * 2636 *
2642 * NOTE: Search result on stack, the found page is pinned at exit. 2637 * NOTE: Search result on stack, the found page is pinned at exit.
2643 * The result page must be an internal dtpage. 2638 * The result page must be an internal dtpage.
@@ -2660,7 +2655,7 @@ static int dtSearchNode(struct inode *ip, s64 lmxaddr, pxd_t * kpxd,
2660 BT_CLR(btstack); /* reset stack */ 2655 BT_CLR(btstack); /* reset stack */
2661 2656
2662 /* 2657 /*
2663 * descend tree to the level with specified leftmost page 2658 * descend tree to the level with specified leftmost page
2664 * 2659 *
2665 * by convention, root bn = 0. 2660 * by convention, root bn = 0.
2666 */ 2661 */
@@ -2699,7 +2694,7 @@ static int dtSearchNode(struct inode *ip, s64 lmxaddr, pxd_t * kpxd,
2699 } 2694 }
2700 2695
2701 /* 2696 /*
2702 * search each page at the current levevl 2697 * search each page at the current levevl
2703 */ 2698 */
2704 loop: 2699 loop:
2705 stbl = DT_GETSTBL(p); 2700 stbl = DT_GETSTBL(p);
@@ -3044,9 +3039,9 @@ int jfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
3044 if (DO_INDEX(ip)) { 3039 if (DO_INDEX(ip)) {
3045 /* 3040 /*
3046 * persistent index is stored in directory entries. 3041 * persistent index is stored in directory entries.
3047 * Special cases: 0 = . 3042 * Special cases: 0 = .
3048 * 1 = .. 3043 * 1 = ..
3049 * -1 = End of directory 3044 * -1 = End of directory
3050 */ 3045 */
3051 do_index = 1; 3046 do_index = 1;
3052 3047
@@ -3128,10 +3123,10 @@ int jfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
3128 /* 3123 /*
3129 * Legacy filesystem - OS/2 & Linux JFS < 0.3.6 3124 * Legacy filesystem - OS/2 & Linux JFS < 0.3.6
3130 * 3125 *
3131 * pn = index = 0: First entry "." 3126 * pn = index = 0: First entry "."
3132 * pn = 0; index = 1: Second entry ".." 3127 * pn = 0; index = 1: Second entry ".."
3133 * pn > 0: Real entries, pn=1 -> leftmost page 3128 * pn > 0: Real entries, pn=1 -> leftmost page
3134 * pn = index = -1: No more entries 3129 * pn = index = -1: No more entries
3135 */ 3130 */
3136 dtpos = filp->f_pos; 3131 dtpos = filp->f_pos;
3137 if (dtpos == 0) { 3132 if (dtpos == 0) {
@@ -3351,7 +3346,7 @@ static int dtReadFirst(struct inode *ip, struct btstack * btstack)
3351 BT_CLR(btstack); /* reset stack */ 3346 BT_CLR(btstack); /* reset stack */
3352 3347
3353 /* 3348 /*
3354 * descend leftmost path of the tree 3349 * descend leftmost path of the tree
3355 * 3350 *
3356 * by convention, root bn = 0. 3351 * by convention, root bn = 0.
3357 */ 3352 */
@@ -4531,7 +4526,7 @@ int dtModify(tid_t tid, struct inode *ip,
4531 struct ldtentry *entry; 4526 struct ldtentry *entry;
4532 4527
4533 /* 4528 /*
4534 * search for the entry to modify: 4529 * search for the entry to modify:
4535 * 4530 *
4536 * dtSearch() returns (leaf page pinned, index at which to modify). 4531 * dtSearch() returns (leaf page pinned, index at which to modify).
4537 */ 4532 */
diff --git a/fs/jfs/jfs_dtree.h b/fs/jfs/jfs_dtree.h
index af8513f78648..8561c6ecece0 100644
--- a/fs/jfs/jfs_dtree.h
+++ b/fs/jfs/jfs_dtree.h
@@ -35,7 +35,7 @@ typedef union {
35 35
36 36
37/* 37/*
38 * entry segment/slot 38 * entry segment/slot
39 * 39 *
40 * an entry consists of type dependent head/only segment/slot and 40 * an entry consists of type dependent head/only segment/slot and
41 * additional segments/slots linked vi next field; 41 * additional segments/slots linked vi next field;
diff --git a/fs/jfs/jfs_extent.c b/fs/jfs/jfs_extent.c
index a35bdca6a805..7ae1e3281de9 100644
--- a/fs/jfs/jfs_extent.c
+++ b/fs/jfs/jfs_extent.c
@@ -34,8 +34,8 @@ static int extBrealloc(struct inode *, s64, s64, s64 *, s64 *);
34#endif 34#endif
35static s64 extRoundDown(s64 nb); 35static s64 extRoundDown(s64 nb);
36 36
37#define DPD(a) (printk("(a): %d\n",(a))) 37#define DPD(a) (printk("(a): %d\n",(a)))
38#define DPC(a) (printk("(a): %c\n",(a))) 38#define DPC(a) (printk("(a): %c\n",(a)))
39#define DPL1(a) \ 39#define DPL1(a) \
40{ \ 40{ \
41 if ((a) >> 32) \ 41 if ((a) >> 32) \
@@ -51,19 +51,19 @@ static s64 extRoundDown(s64 nb);
51 printk("(a): %x\n",(a) << 32); \ 51 printk("(a): %x\n",(a) << 32); \
52} 52}
53 53
54#define DPD1(a) (printk("(a): %d ",(a))) 54#define DPD1(a) (printk("(a): %d ",(a)))
55#define DPX(a) (printk("(a): %08x\n",(a))) 55#define DPX(a) (printk("(a): %08x\n",(a)))
56#define DPX1(a) (printk("(a): %08x ",(a))) 56#define DPX1(a) (printk("(a): %08x ",(a)))
57#define DPS(a) (printk("%s\n",(a))) 57#define DPS(a) (printk("%s\n",(a)))
58#define DPE(a) (printk("\nENTERING: %s\n",(a))) 58#define DPE(a) (printk("\nENTERING: %s\n",(a)))
59#define DPE1(a) (printk("\nENTERING: %s",(a))) 59#define DPE1(a) (printk("\nENTERING: %s",(a)))
60#define DPS1(a) (printk(" %s ",(a))) 60#define DPS1(a) (printk(" %s ",(a)))
61 61
62 62
63/* 63/*
64 * NAME: extAlloc() 64 * NAME: extAlloc()
65 * 65 *
66 * FUNCTION: allocate an extent for a specified page range within a 66 * FUNCTION: allocate an extent for a specified page range within a
67 * file. 67 * file.
68 * 68 *
69 * PARAMETERS: 69 * PARAMETERS:
@@ -78,9 +78,9 @@ static s64 extRoundDown(s64 nb);
78 * should be marked as allocated but not recorded. 78 * should be marked as allocated but not recorded.
79 * 79 *
80 * RETURN VALUES: 80 * RETURN VALUES:
81 * 0 - success 81 * 0 - success
82 * -EIO - i/o error. 82 * -EIO - i/o error.
83 * -ENOSPC - insufficient disk resources. 83 * -ENOSPC - insufficient disk resources.
84 */ 84 */
85int 85int
86extAlloc(struct inode *ip, s64 xlen, s64 pno, xad_t * xp, bool abnr) 86extAlloc(struct inode *ip, s64 xlen, s64 pno, xad_t * xp, bool abnr)
@@ -192,9 +192,9 @@ extAlloc(struct inode *ip, s64 xlen, s64 pno, xad_t * xp, bool abnr)
192 192
193#ifdef _NOTYET 193#ifdef _NOTYET
194/* 194/*
195 * NAME: extRealloc() 195 * NAME: extRealloc()
196 * 196 *
197 * FUNCTION: extend the allocation of a file extent containing a 197 * FUNCTION: extend the allocation of a file extent containing a
198 * partial back last page. 198 * partial back last page.
199 * 199 *
200 * PARAMETERS: 200 * PARAMETERS:
@@ -207,9 +207,9 @@ extAlloc(struct inode *ip, s64 xlen, s64 pno, xad_t * xp, bool abnr)
207 * should be marked as allocated but not recorded. 207 * should be marked as allocated but not recorded.
208 * 208 *
209 * RETURN VALUES: 209 * RETURN VALUES:
210 * 0 - success 210 * 0 - success
211 * -EIO - i/o error. 211 * -EIO - i/o error.
212 * -ENOSPC - insufficient disk resources. 212 * -ENOSPC - insufficient disk resources.
213 */ 213 */
214int extRealloc(struct inode *ip, s64 nxlen, xad_t * xp, bool abnr) 214int extRealloc(struct inode *ip, s64 nxlen, xad_t * xp, bool abnr)
215{ 215{
@@ -345,9 +345,9 @@ exit:
345 345
346 346
347/* 347/*
348 * NAME: extHint() 348 * NAME: extHint()
349 * 349 *
350 * FUNCTION: produce an extent allocation hint for a file offset. 350 * FUNCTION: produce an extent allocation hint for a file offset.
351 * 351 *
352 * PARAMETERS: 352 * PARAMETERS:
353 * ip - the inode of the file. 353 * ip - the inode of the file.
@@ -356,8 +356,8 @@ exit:
356 * the hint. 356 * the hint.
357 * 357 *
358 * RETURN VALUES: 358 * RETURN VALUES:
359 * 0 - success 359 * 0 - success
360 * -EIO - i/o error. 360 * -EIO - i/o error.
361 */ 361 */
362int extHint(struct inode *ip, s64 offset, xad_t * xp) 362int extHint(struct inode *ip, s64 offset, xad_t * xp)
363{ 363{
@@ -387,7 +387,7 @@ int extHint(struct inode *ip, s64 offset, xad_t * xp)
387 lxdl.nlxd = 1; 387 lxdl.nlxd = 1;
388 lxdl.lxd = &lxd; 388 lxdl.lxd = &lxd;
389 LXDoffset(&lxd, prev) 389 LXDoffset(&lxd, prev)
390 LXDlength(&lxd, nbperpage); 390 LXDlength(&lxd, nbperpage);
391 391
392 xadl.maxnxad = 1; 392 xadl.maxnxad = 1;
393 xadl.nxad = 0; 393 xadl.nxad = 0;
@@ -397,11 +397,11 @@ int extHint(struct inode *ip, s64 offset, xad_t * xp)
397 if ((rc = xtLookupList(ip, &lxdl, &xadl, 0))) 397 if ((rc = xtLookupList(ip, &lxdl, &xadl, 0)))
398 return (rc); 398 return (rc);
399 399
400 /* check if not extent exists for the previous page. 400 /* check if no extent exists for the previous page.
401 * this is possible for sparse files. 401 * this is possible for sparse files.
402 */ 402 */
403 if (xadl.nxad == 0) { 403 if (xadl.nxad == 0) {
404// assert(ISSPARSE(ip)); 404// assert(ISSPARSE(ip));
405 return (0); 405 return (0);
406 } 406 }
407 407
@@ -410,28 +410,28 @@ int extHint(struct inode *ip, s64 offset, xad_t * xp)
410 */ 410 */
411 xp->flag &= XAD_NOTRECORDED; 411 xp->flag &= XAD_NOTRECORDED;
412 412
413 if(xadl.nxad != 1 || lengthXAD(xp) != nbperpage) { 413 if(xadl.nxad != 1 || lengthXAD(xp) != nbperpage) {
414 jfs_error(ip->i_sb, "extHint: corrupt xtree"); 414 jfs_error(ip->i_sb, "extHint: corrupt xtree");
415 return -EIO; 415 return -EIO;
416 } 416 }
417 417
418 return (0); 418 return (0);
419} 419}
420 420
421 421
422/* 422/*
423 * NAME: extRecord() 423 * NAME: extRecord()
424 * 424 *
425 * FUNCTION: change a page with a file from not recorded to recorded. 425 * FUNCTION: change a page with a file from not recorded to recorded.
426 * 426 *
427 * PARAMETERS: 427 * PARAMETERS:
428 * ip - inode of the file. 428 * ip - inode of the file.
429 * cp - cbuf of the file page. 429 * cp - cbuf of the file page.
430 * 430 *
431 * RETURN VALUES: 431 * RETURN VALUES:
432 * 0 - success 432 * 0 - success
433 * -EIO - i/o error. 433 * -EIO - i/o error.
434 * -ENOSPC - insufficient disk resources. 434 * -ENOSPC - insufficient disk resources.
435 */ 435 */
436int extRecord(struct inode *ip, xad_t * xp) 436int extRecord(struct inode *ip, xad_t * xp)
437{ 437{
@@ -451,9 +451,9 @@ int extRecord(struct inode *ip, xad_t * xp)
451 451
452#ifdef _NOTYET 452#ifdef _NOTYET
453/* 453/*
454 * NAME: extFill() 454 * NAME: extFill()
455 * 455 *
456 * FUNCTION: allocate disk space for a file page that represents 456 * FUNCTION: allocate disk space for a file page that represents
457 * a file hole. 457 * a file hole.
458 * 458 *
459 * PARAMETERS: 459 * PARAMETERS:
@@ -461,16 +461,16 @@ int extRecord(struct inode *ip, xad_t * xp)
461 * cp - cbuf of the file page represent the hole. 461 * cp - cbuf of the file page represent the hole.
462 * 462 *
463 * RETURN VALUES: 463 * RETURN VALUES:
464 * 0 - success 464 * 0 - success
465 * -EIO - i/o error. 465 * -EIO - i/o error.
466 * -ENOSPC - insufficient disk resources. 466 * -ENOSPC - insufficient disk resources.
467 */ 467 */
468int extFill(struct inode *ip, xad_t * xp) 468int extFill(struct inode *ip, xad_t * xp)
469{ 469{
470 int rc, nbperpage = JFS_SBI(ip->i_sb)->nbperpage; 470 int rc, nbperpage = JFS_SBI(ip->i_sb)->nbperpage;
471 s64 blkno = offsetXAD(xp) >> ip->i_blkbits; 471 s64 blkno = offsetXAD(xp) >> ip->i_blkbits;
472 472
473// assert(ISSPARSE(ip)); 473// assert(ISSPARSE(ip));
474 474
475 /* initialize the extent allocation hint */ 475 /* initialize the extent allocation hint */
476 XADaddress(xp, 0); 476 XADaddress(xp, 0);
@@ -489,7 +489,7 @@ int extFill(struct inode *ip, xad_t * xp)
489/* 489/*
490 * NAME: extBalloc() 490 * NAME: extBalloc()
491 * 491 *
492 * FUNCTION: allocate disk blocks to form an extent. 492 * FUNCTION: allocate disk blocks to form an extent.
493 * 493 *
494 * initially, we will try to allocate disk blocks for the 494 * initially, we will try to allocate disk blocks for the
495 * requested size (nblocks). if this fails (nblocks 495 * requested size (nblocks). if this fails (nblocks
@@ -513,9 +513,9 @@ int extFill(struct inode *ip, xad_t * xp)
513 * allocated block range. 513 * allocated block range.
514 * 514 *
515 * RETURN VALUES: 515 * RETURN VALUES:
516 * 0 - success 516 * 0 - success
517 * -EIO - i/o error. 517 * -EIO - i/o error.
518 * -ENOSPC - insufficient disk resources. 518 * -ENOSPC - insufficient disk resources.
519 */ 519 */
520static int 520static int
521extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno) 521extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno)
@@ -580,7 +580,7 @@ extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno)
580/* 580/*
581 * NAME: extBrealloc() 581 * NAME: extBrealloc()
582 * 582 *
583 * FUNCTION: attempt to extend an extent's allocation. 583 * FUNCTION: attempt to extend an extent's allocation.
584 * 584 *
585 * Initially, we will try to extend the extent's allocation 585 * Initially, we will try to extend the extent's allocation
586 * in place. If this fails, we'll try to move the extent 586 * in place. If this fails, we'll try to move the extent
@@ -597,8 +597,8 @@ extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno)
597 * 597 *
598 * PARAMETERS: 598 * PARAMETERS:
599 * ip - the inode of the file. 599 * ip - the inode of the file.
600 * blkno - starting block number of the extents current allocation. 600 * blkno - starting block number of the extents current allocation.
601 * nblks - number of blocks within the extents current allocation. 601 * nblks - number of blocks within the extents current allocation.
602 * newnblks - pointer to a s64 value. on entry, this value is the 602 * newnblks - pointer to a s64 value. on entry, this value is the
603 * the new desired extent size (number of blocks). on 603 * the new desired extent size (number of blocks). on
604 * successful exit, this value is set to the extent's actual 604 * successful exit, this value is set to the extent's actual
@@ -606,9 +606,9 @@ extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno)
606 * newblkno - the starting block number of the extents new allocation. 606 * newblkno - the starting block number of the extents new allocation.
607 * 607 *
608 * RETURN VALUES: 608 * RETURN VALUES:
609 * 0 - success 609 * 0 - success
610 * -EIO - i/o error. 610 * -EIO - i/o error.
611 * -ENOSPC - insufficient disk resources. 611 * -ENOSPC - insufficient disk resources.
612 */ 612 */
613static int 613static int
614extBrealloc(struct inode *ip, 614extBrealloc(struct inode *ip,
@@ -634,16 +634,16 @@ extBrealloc(struct inode *ip,
634 634
635 635
636/* 636/*
637 * NAME: extRoundDown() 637 * NAME: extRoundDown()
638 * 638 *
639 * FUNCTION: round down a specified number of blocks to the next 639 * FUNCTION: round down a specified number of blocks to the next
640 * smallest power of 2 number. 640 * smallest power of 2 number.
641 * 641 *
642 * PARAMETERS: 642 * PARAMETERS:
643 * nb - the inode of the file. 643 * nb - the inode of the file.
644 * 644 *
645 * RETURN VALUES: 645 * RETURN VALUES:
646 * next smallest power of 2 number. 646 * next smallest power of 2 number.
647 */ 647 */
648static s64 extRoundDown(s64 nb) 648static s64 extRoundDown(s64 nb)
649{ 649{
diff --git a/fs/jfs/jfs_filsys.h b/fs/jfs/jfs_filsys.h
index 38f70ac03bec..b3f5463fbe52 100644
--- a/fs/jfs/jfs_filsys.h
+++ b/fs/jfs/jfs_filsys.h
@@ -34,9 +34,9 @@
34#define JFS_UNICODE 0x00000001 /* unicode name */ 34#define JFS_UNICODE 0x00000001 /* unicode name */
35 35
36/* mount time flags for error handling */ 36/* mount time flags for error handling */
37#define JFS_ERR_REMOUNT_RO 0x00000002 /* remount read-only */ 37#define JFS_ERR_REMOUNT_RO 0x00000002 /* remount read-only */
38#define JFS_ERR_CONTINUE 0x00000004 /* continue */ 38#define JFS_ERR_CONTINUE 0x00000004 /* continue */
39#define JFS_ERR_PANIC 0x00000008 /* panic */ 39#define JFS_ERR_PANIC 0x00000008 /* panic */
40 40
41/* Quota support */ 41/* Quota support */
42#define JFS_USRQUOTA 0x00000010 42#define JFS_USRQUOTA 0x00000010
@@ -83,7 +83,6 @@
83/* case-insensitive name/directory support */ 83/* case-insensitive name/directory support */
84 84
85#define JFS_AIX 0x80000000 /* AIX support */ 85#define JFS_AIX 0x80000000 /* AIX support */
86/* POSIX name/directory support - Never implemented*/
87 86
88/* 87/*
89 * buffer cache configuration 88 * buffer cache configuration
@@ -113,10 +112,10 @@
113#define IDATASIZE 256 /* inode inline data size */ 112#define IDATASIZE 256 /* inode inline data size */
114#define IXATTRSIZE 128 /* inode inline extended attribute size */ 113#define IXATTRSIZE 128 /* inode inline extended attribute size */
115 114
116#define XTPAGE_SIZE 4096 115#define XTPAGE_SIZE 4096
117#define log2_PAGESIZE 12 116#define log2_PAGESIZE 12
118 117
119#define IAG_SIZE 4096 118#define IAG_SIZE 4096
120#define IAG_EXTENT_SIZE 4096 119#define IAG_EXTENT_SIZE 4096
121#define INOSPERIAG 4096 /* number of disk inodes per iag */ 120#define INOSPERIAG 4096 /* number of disk inodes per iag */
122#define L2INOSPERIAG 12 /* l2 number of disk inodes per iag */ 121#define L2INOSPERIAG 12 /* l2 number of disk inodes per iag */
diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index c6530227cda6..f5c5227b0d1f 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -93,21 +93,21 @@ static int copy_from_dinode(struct dinode *, struct inode *);
93static void copy_to_dinode(struct dinode *, struct inode *); 93static void copy_to_dinode(struct dinode *, struct inode *);
94 94
95/* 95/*
96 * NAME: diMount() 96 * NAME: diMount()
97 * 97 *
98 * FUNCTION: initialize the incore inode map control structures for 98 * FUNCTION: initialize the incore inode map control structures for
99 * a fileset or aggregate init time. 99 * a fileset or aggregate init time.
100 * 100 *
101 * the inode map's control structure (dinomap) is 101 * the inode map's control structure (dinomap) is
102 * brought in from disk and placed in virtual memory. 102 * brought in from disk and placed in virtual memory.
103 * 103 *
104 * PARAMETERS: 104 * PARAMETERS:
105 * ipimap - pointer to inode map inode for the aggregate or fileset. 105 * ipimap - pointer to inode map inode for the aggregate or fileset.
106 * 106 *
107 * RETURN VALUES: 107 * RETURN VALUES:
108 * 0 - success 108 * 0 - success
109 * -ENOMEM - insufficient free virtual memory. 109 * -ENOMEM - insufficient free virtual memory.
110 * -EIO - i/o error. 110 * -EIO - i/o error.
111 */ 111 */
112int diMount(struct inode *ipimap) 112int diMount(struct inode *ipimap)
113{ 113{
@@ -180,18 +180,18 @@ int diMount(struct inode *ipimap)
180 180
181 181
182/* 182/*
183 * NAME: diUnmount() 183 * NAME: diUnmount()
184 * 184 *
185 * FUNCTION: write to disk the incore inode map control structures for 185 * FUNCTION: write to disk the incore inode map control structures for
186 * a fileset or aggregate at unmount time. 186 * a fileset or aggregate at unmount time.
187 * 187 *
188 * PARAMETERS: 188 * PARAMETERS:
189 * ipimap - pointer to inode map inode for the aggregate or fileset. 189 * ipimap - pointer to inode map inode for the aggregate or fileset.
190 * 190 *
191 * RETURN VALUES: 191 * RETURN VALUES:
192 * 0 - success 192 * 0 - success
193 * -ENOMEM - insufficient free virtual memory. 193 * -ENOMEM - insufficient free virtual memory.
194 * -EIO - i/o error. 194 * -EIO - i/o error.
195 */ 195 */
196int diUnmount(struct inode *ipimap, int mounterror) 196int diUnmount(struct inode *ipimap, int mounterror)
197{ 197{
@@ -274,9 +274,9 @@ int diSync(struct inode *ipimap)
274 274
275 275
276/* 276/*
277 * NAME: diRead() 277 * NAME: diRead()
278 * 278 *
279 * FUNCTION: initialize an incore inode from disk. 279 * FUNCTION: initialize an incore inode from disk.
280 * 280 *
281 * on entry, the specifed incore inode should itself 281 * on entry, the specifed incore inode should itself
282 * specify the disk inode number corresponding to the 282 * specify the disk inode number corresponding to the
@@ -285,7 +285,7 @@ int diSync(struct inode *ipimap)
285 * this routine handles incore inode initialization for 285 * this routine handles incore inode initialization for
286 * both "special" and "regular" inodes. special inodes 286 * both "special" and "regular" inodes. special inodes
287 * are those required early in the mount process and 287 * are those required early in the mount process and
288 * require special handling since much of the file system 288 * require special handling since much of the file system
289 * is not yet initialized. these "special" inodes are 289 * is not yet initialized. these "special" inodes are
290 * identified by a NULL inode map inode pointer and are 290 * identified by a NULL inode map inode pointer and are
291 * actually initialized by a call to diReadSpecial(). 291 * actually initialized by a call to diReadSpecial().
@@ -298,12 +298,12 @@ int diSync(struct inode *ipimap)
298 * incore inode. 298 * incore inode.
299 * 299 *
300 * PARAMETERS: 300 * PARAMETERS:
301 * ip - pointer to incore inode to be initialized from disk. 301 * ip - pointer to incore inode to be initialized from disk.
302 * 302 *
303 * RETURN VALUES: 303 * RETURN VALUES:
304 * 0 - success 304 * 0 - success
305 * -EIO - i/o error. 305 * -EIO - i/o error.
306 * -ENOMEM - insufficient memory 306 * -ENOMEM - insufficient memory
307 * 307 *
308 */ 308 */
309int diRead(struct inode *ip) 309int diRead(struct inode *ip)
@@ -410,26 +410,26 @@ int diRead(struct inode *ip)
410 410
411 411
412/* 412/*
413 * NAME: diReadSpecial() 413 * NAME: diReadSpecial()
414 * 414 *
415 * FUNCTION: initialize a 'special' inode from disk. 415 * FUNCTION: initialize a 'special' inode from disk.
416 * 416 *
417 * this routines handles aggregate level inodes. The 417 * this routines handles aggregate level inodes. The
418 * inode cache cannot differentiate between the 418 * inode cache cannot differentiate between the
419 * aggregate inodes and the filesystem inodes, so we 419 * aggregate inodes and the filesystem inodes, so we
420 * handle these here. We don't actually use the aggregate 420 * handle these here. We don't actually use the aggregate
421 * inode map, since these inodes are at a fixed location 421 * inode map, since these inodes are at a fixed location
422 * and in some cases the aggregate inode map isn't initialized 422 * and in some cases the aggregate inode map isn't initialized
423 * yet. 423 * yet.
424 * 424 *
425 * PARAMETERS: 425 * PARAMETERS:
426 * sb - filesystem superblock 426 * sb - filesystem superblock
427 * inum - aggregate inode number 427 * inum - aggregate inode number
428 * secondary - 1 if secondary aggregate inode table 428 * secondary - 1 if secondary aggregate inode table
429 * 429 *
430 * RETURN VALUES: 430 * RETURN VALUES:
431 * new inode - success 431 * new inode - success
432 * NULL - i/o error. 432 * NULL - i/o error.
433 */ 433 */
434struct inode *diReadSpecial(struct super_block *sb, ino_t inum, int secondary) 434struct inode *diReadSpecial(struct super_block *sb, ino_t inum, int secondary)
435{ 435{
@@ -502,12 +502,12 @@ struct inode *diReadSpecial(struct super_block *sb, ino_t inum, int secondary)
502} 502}
503 503
504/* 504/*
505 * NAME: diWriteSpecial() 505 * NAME: diWriteSpecial()
506 * 506 *
507 * FUNCTION: Write the special inode to disk 507 * FUNCTION: Write the special inode to disk
508 * 508 *
509 * PARAMETERS: 509 * PARAMETERS:
510 * ip - special inode 510 * ip - special inode
511 * secondary - 1 if secondary aggregate inode table 511 * secondary - 1 if secondary aggregate inode table
512 * 512 *
513 * RETURN VALUES: none 513 * RETURN VALUES: none
@@ -554,9 +554,9 @@ void diWriteSpecial(struct inode *ip, int secondary)
554} 554}
555 555
556/* 556/*
557 * NAME: diFreeSpecial() 557 * NAME: diFreeSpecial()
558 * 558 *
559 * FUNCTION: Free allocated space for special inode 559 * FUNCTION: Free allocated space for special inode
560 */ 560 */
561void diFreeSpecial(struct inode *ip) 561void diFreeSpecial(struct inode *ip)
562{ 562{
@@ -572,9 +572,9 @@ void diFreeSpecial(struct inode *ip)
572 572
573 573
574/* 574/*
575 * NAME: diWrite() 575 * NAME: diWrite()
576 * 576 *
577 * FUNCTION: write the on-disk inode portion of the in-memory inode 577 * FUNCTION: write the on-disk inode portion of the in-memory inode
578 * to its corresponding on-disk inode. 578 * to its corresponding on-disk inode.
579 * 579 *
580 * on entry, the specifed incore inode should itself 580 * on entry, the specifed incore inode should itself
@@ -589,11 +589,11 @@ void diFreeSpecial(struct inode *ip)
589 * 589 *
590 * PARAMETERS: 590 * PARAMETERS:
591 * tid - transacation id 591 * tid - transacation id
592 * ip - pointer to incore inode to be written to the inode extent. 592 * ip - pointer to incore inode to be written to the inode extent.
593 * 593 *
594 * RETURN VALUES: 594 * RETURN VALUES:
595 * 0 - success 595 * 0 - success
596 * -EIO - i/o error. 596 * -EIO - i/o error.
597 */ 597 */
598int diWrite(tid_t tid, struct inode *ip) 598int diWrite(tid_t tid, struct inode *ip)
599{ 599{
@@ -730,7 +730,7 @@ int diWrite(tid_t tid, struct inode *ip)
730 ilinelock = (struct linelock *) & tlck->lock; 730 ilinelock = (struct linelock *) & tlck->lock;
731 731
732 /* 732 /*
733 * regular file: 16 byte (XAD slot) granularity 733 * regular file: 16 byte (XAD slot) granularity
734 */ 734 */
735 if (type & tlckXTREE) { 735 if (type & tlckXTREE) {
736 xtpage_t *p, *xp; 736 xtpage_t *p, *xp;
@@ -755,7 +755,7 @@ int diWrite(tid_t tid, struct inode *ip)
755 xad->flag &= ~(XAD_NEW | XAD_EXTENDED); 755 xad->flag &= ~(XAD_NEW | XAD_EXTENDED);
756 } 756 }
757 /* 757 /*
758 * directory: 32 byte (directory entry slot) granularity 758 * directory: 32 byte (directory entry slot) granularity
759 */ 759 */
760 else if (type & tlckDTREE) { 760 else if (type & tlckDTREE) {
761 dtpage_t *p, *xp; 761 dtpage_t *p, *xp;
@@ -800,9 +800,8 @@ int diWrite(tid_t tid, struct inode *ip)
800 } 800 }
801 801
802 /* 802 /*
803 * lock/copy inode base: 128 byte slot granularity 803 * lock/copy inode base: 128 byte slot granularity
804 */ 804 */
805// baseDinode:
806 lv = & dilinelock->lv[dilinelock->index]; 805 lv = & dilinelock->lv[dilinelock->index];
807 lv->offset = dioffset >> L2INODESLOTSIZE; 806 lv->offset = dioffset >> L2INODESLOTSIZE;
808 copy_to_dinode(dp, ip); 807 copy_to_dinode(dp, ip);
@@ -813,17 +812,6 @@ int diWrite(tid_t tid, struct inode *ip)
813 lv->length = 1; 812 lv->length = 1;
814 dilinelock->index++; 813 dilinelock->index++;
815 814
816#ifdef _JFS_FASTDASD
817 /*
818 * We aren't logging changes to the DASD used in directory inodes,
819 * but we need to write them to disk. If we don't unmount cleanly,
820 * mount will recalculate the DASD used.
821 */
822 if (S_ISDIR(ip->i_mode)
823 && (ip->i_ipmnt->i_mntflag & JFS_DASD_ENABLED))
824 memcpy(&dp->di_DASD, &ip->i_DASD, sizeof(struct dasd));
825#endif /* _JFS_FASTDASD */
826
827 /* release the buffer holding the updated on-disk inode. 815 /* release the buffer holding the updated on-disk inode.
828 * the buffer will be later written by commit processing. 816 * the buffer will be later written by commit processing.
829 */ 817 */
@@ -834,9 +822,9 @@ int diWrite(tid_t tid, struct inode *ip)
834 822
835 823
836/* 824/*
837 * NAME: diFree(ip) 825 * NAME: diFree(ip)
838 * 826 *
839 * FUNCTION: free a specified inode from the inode working map 827 * FUNCTION: free a specified inode from the inode working map
840 * for a fileset or aggregate. 828 * for a fileset or aggregate.
841 * 829 *
842 * if the inode to be freed represents the first (only) 830 * if the inode to be freed represents the first (only)
@@ -865,11 +853,11 @@ int diWrite(tid_t tid, struct inode *ip)
865 * any updates and are held until all updates are complete. 853 * any updates and are held until all updates are complete.
866 * 854 *
867 * PARAMETERS: 855 * PARAMETERS:
868 * ip - inode to be freed. 856 * ip - inode to be freed.
869 * 857 *
870 * RETURN VALUES: 858 * RETURN VALUES:
871 * 0 - success 859 * 0 - success
872 * -EIO - i/o error. 860 * -EIO - i/o error.
873 */ 861 */
874int diFree(struct inode *ip) 862int diFree(struct inode *ip)
875{ 863{
@@ -964,8 +952,8 @@ int diFree(struct inode *ip)
964 return -EIO; 952 return -EIO;
965 } 953 }
966 /* 954 /*
967 * inode extent still has some inodes or below low water mark: 955 * inode extent still has some inodes or below low water mark:
968 * keep the inode extent; 956 * keep the inode extent;
969 */ 957 */
970 if (bitmap || 958 if (bitmap ||
971 imap->im_agctl[agno].numfree < 96 || 959 imap->im_agctl[agno].numfree < 96 ||
@@ -1047,12 +1035,12 @@ int diFree(struct inode *ip)
1047 1035
1048 1036
1049 /* 1037 /*
1050 * inode extent has become free and above low water mark: 1038 * inode extent has become free and above low water mark:
1051 * free the inode extent; 1039 * free the inode extent;
1052 */ 1040 */
1053 1041
1054 /* 1042 /*
1055 * prepare to update iag list(s) (careful update step 1) 1043 * prepare to update iag list(s) (careful update step 1)
1056 */ 1044 */
1057 amp = bmp = cmp = dmp = NULL; 1045 amp = bmp = cmp = dmp = NULL;
1058 fwd = back = -1; 1046 fwd = back = -1;
@@ -1152,7 +1140,7 @@ int diFree(struct inode *ip)
1152 invalidate_pxd_metapages(ip, freepxd); 1140 invalidate_pxd_metapages(ip, freepxd);
1153 1141
1154 /* 1142 /*
1155 * update iag list(s) (careful update step 2) 1143 * update iag list(s) (careful update step 2)
1156 */ 1144 */
1157 /* add the iag to the ag extent free list if this is the 1145 /* add the iag to the ag extent free list if this is the
1158 * first free extent for the iag. 1146 * first free extent for the iag.
@@ -1338,20 +1326,20 @@ diInitInode(struct inode *ip, int iagno, int ino, int extno, struct iag * iagp)
1338 1326
1339 1327
1340/* 1328/*
1341 * NAME: diAlloc(pip,dir,ip) 1329 * NAME: diAlloc(pip,dir,ip)
1342 * 1330 *
1343 * FUNCTION: allocate a disk inode from the inode working map 1331 * FUNCTION: allocate a disk inode from the inode working map
1344 * for a fileset or aggregate. 1332 * for a fileset or aggregate.
1345 * 1333 *
1346 * PARAMETERS: 1334 * PARAMETERS:
1347 * pip - pointer to incore inode for the parent inode. 1335 * pip - pointer to incore inode for the parent inode.
1348 * dir - 'true' if the new disk inode is for a directory. 1336 * dir - 'true' if the new disk inode is for a directory.
1349 * ip - pointer to a new inode 1337 * ip - pointer to a new inode
1350 * 1338 *
1351 * RETURN VALUES: 1339 * RETURN VALUES:
1352 * 0 - success. 1340 * 0 - success.
1353 * -ENOSPC - insufficient disk resources. 1341 * -ENOSPC - insufficient disk resources.
1354 * -EIO - i/o error. 1342 * -EIO - i/o error.
1355 */ 1343 */
1356int diAlloc(struct inode *pip, bool dir, struct inode *ip) 1344int diAlloc(struct inode *pip, bool dir, struct inode *ip)
1357{ 1345{
@@ -1433,7 +1421,7 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
1433 addext = (imap->im_agctl[agno].numfree < 32 && iagp->nfreeexts); 1421 addext = (imap->im_agctl[agno].numfree < 32 && iagp->nfreeexts);
1434 1422
1435 /* 1423 /*
1436 * try to allocate from the IAG 1424 * try to allocate from the IAG
1437 */ 1425 */
1438 /* check if the inode may be allocated from the iag 1426 /* check if the inode may be allocated from the iag
1439 * (i.e. the inode has free inodes or new extent can be added). 1427 * (i.e. the inode has free inodes or new extent can be added).
@@ -1633,9 +1621,9 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
1633 1621
1634 1622
1635/* 1623/*
1636 * NAME: diAllocAG(imap,agno,dir,ip) 1624 * NAME: diAllocAG(imap,agno,dir,ip)
1637 * 1625 *
1638 * FUNCTION: allocate a disk inode from the allocation group. 1626 * FUNCTION: allocate a disk inode from the allocation group.
1639 * 1627 *
1640 * this routine first determines if a new extent of free 1628 * this routine first determines if a new extent of free
1641 * inodes should be added for the allocation group, with 1629 * inodes should be added for the allocation group, with
@@ -1649,17 +1637,17 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
1649 * PRE CONDITION: Already have the AG lock for this AG. 1637 * PRE CONDITION: Already have the AG lock for this AG.
1650 * 1638 *
1651 * PARAMETERS: 1639 * PARAMETERS:
1652 * imap - pointer to inode map control structure. 1640 * imap - pointer to inode map control structure.
1653 * agno - allocation group to allocate from. 1641 * agno - allocation group to allocate from.
1654 * dir - 'true' if the new disk inode is for a directory. 1642 * dir - 'true' if the new disk inode is for a directory.
1655 * ip - pointer to the new inode to be filled in on successful return 1643 * ip - pointer to the new inode to be filled in on successful return
1656 * with the disk inode number allocated, its extent address 1644 * with the disk inode number allocated, its extent address
1657 * and the start of the ag. 1645 * and the start of the ag.
1658 * 1646 *
1659 * RETURN VALUES: 1647 * RETURN VALUES:
1660 * 0 - success. 1648 * 0 - success.
1661 * -ENOSPC - insufficient disk resources. 1649 * -ENOSPC - insufficient disk resources.
1662 * -EIO - i/o error. 1650 * -EIO - i/o error.
1663 */ 1651 */
1664static int 1652static int
1665diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip) 1653diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip)
@@ -1709,9 +1697,9 @@ diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip)
1709 1697
1710 1698
1711/* 1699/*
1712 * NAME: diAllocAny(imap,agno,dir,iap) 1700 * NAME: diAllocAny(imap,agno,dir,iap)
1713 * 1701 *
1714 * FUNCTION: allocate a disk inode from any other allocation group. 1702 * FUNCTION: allocate a disk inode from any other allocation group.
1715 * 1703 *
1716 * this routine is called when an allocation attempt within 1704 * this routine is called when an allocation attempt within
1717 * the primary allocation group has failed. if attempts to 1705 * the primary allocation group has failed. if attempts to
@@ -1719,17 +1707,17 @@ diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip)
1719 * specified primary group. 1707 * specified primary group.
1720 * 1708 *
1721 * PARAMETERS: 1709 * PARAMETERS:
1722 * imap - pointer to inode map control structure. 1710 * imap - pointer to inode map control structure.
1723 * agno - primary allocation group (to avoid). 1711 * agno - primary allocation group (to avoid).
1724 * dir - 'true' if the new disk inode is for a directory. 1712 * dir - 'true' if the new disk inode is for a directory.
1725 * ip - pointer to a new inode to be filled in on successful return 1713 * ip - pointer to a new inode to be filled in on successful return
1726 * with the disk inode number allocated, its extent address 1714 * with the disk inode number allocated, its extent address
1727 * and the start of the ag. 1715 * and the start of the ag.
1728 * 1716 *
1729 * RETURN VALUES: 1717 * RETURN VALUES:
1730 * 0 - success. 1718 * 0 - success.
1731 * -ENOSPC - insufficient disk resources. 1719 * -ENOSPC - insufficient disk resources.
1732 * -EIO - i/o error. 1720 * -EIO - i/o error.
1733 */ 1721 */
1734static int 1722static int
1735diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip) 1723diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
@@ -1772,9 +1760,9 @@ diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
1772 1760
1773 1761
1774/* 1762/*
1775 * NAME: diAllocIno(imap,agno,ip) 1763 * NAME: diAllocIno(imap,agno,ip)
1776 * 1764 *
1777 * FUNCTION: allocate a disk inode from the allocation group's free 1765 * FUNCTION: allocate a disk inode from the allocation group's free
1778 * inode list, returning an error if this free list is 1766 * inode list, returning an error if this free list is
1779 * empty (i.e. no iags on the list). 1767 * empty (i.e. no iags on the list).
1780 * 1768 *
@@ -1785,16 +1773,16 @@ diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
1785 * PRE CONDITION: Already have AG lock for this AG. 1773 * PRE CONDITION: Already have AG lock for this AG.
1786 * 1774 *
1787 * PARAMETERS: 1775 * PARAMETERS:
1788 * imap - pointer to inode map control structure. 1776 * imap - pointer to inode map control structure.
1789 * agno - allocation group. 1777 * agno - allocation group.
1790 * ip - pointer to new inode to be filled in on successful return 1778 * ip - pointer to new inode to be filled in on successful return
1791 * with the disk inode number allocated, its extent address 1779 * with the disk inode number allocated, its extent address
1792 * and the start of the ag. 1780 * and the start of the ag.
1793 * 1781 *
1794 * RETURN VALUES: 1782 * RETURN VALUES:
1795 * 0 - success. 1783 * 0 - success.
1796 * -ENOSPC - insufficient disk resources. 1784 * -ENOSPC - insufficient disk resources.
1797 * -EIO - i/o error. 1785 * -EIO - i/o error.
1798 */ 1786 */
1799static int diAllocIno(struct inomap * imap, int agno, struct inode *ip) 1787static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
1800{ 1788{
@@ -1890,7 +1878,7 @@ static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
1890 1878
1891 1879
1892/* 1880/*
1893 * NAME: diAllocExt(imap,agno,ip) 1881 * NAME: diAllocExt(imap,agno,ip)
1894 * 1882 *
1895 * FUNCTION: add a new extent of free inodes to an iag, allocating 1883 * FUNCTION: add a new extent of free inodes to an iag, allocating
1896 * an inode from this extent to satisfy the current allocation 1884 * an inode from this extent to satisfy the current allocation
@@ -1910,16 +1898,16 @@ static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
1910 * for the purpose of satisfying this request. 1898 * for the purpose of satisfying this request.
1911 * 1899 *
1912 * PARAMETERS: 1900 * PARAMETERS:
1913 * imap - pointer to inode map control structure. 1901 * imap - pointer to inode map control structure.
1914 * agno - allocation group number. 1902 * agno - allocation group number.
1915 * ip - pointer to new inode to be filled in on successful return 1903 * ip - pointer to new inode to be filled in on successful return
1916 * with the disk inode number allocated, its extent address 1904 * with the disk inode number allocated, its extent address
1917 * and the start of the ag. 1905 * and the start of the ag.
1918 * 1906 *
1919 * RETURN VALUES: 1907 * RETURN VALUES:
1920 * 0 - success. 1908 * 0 - success.
1921 * -ENOSPC - insufficient disk resources. 1909 * -ENOSPC - insufficient disk resources.
1922 * -EIO - i/o error. 1910 * -EIO - i/o error.
1923 */ 1911 */
1924static int diAllocExt(struct inomap * imap, int agno, struct inode *ip) 1912static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
1925{ 1913{
@@ -2010,7 +1998,7 @@ static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
2010 1998
2011 1999
2012/* 2000/*
2013 * NAME: diAllocBit(imap,iagp,ino) 2001 * NAME: diAllocBit(imap,iagp,ino)
2014 * 2002 *
2015 * FUNCTION: allocate a backed inode from an iag. 2003 * FUNCTION: allocate a backed inode from an iag.
2016 * 2004 *
@@ -2030,14 +2018,14 @@ static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
2030 * this AG. Must have read lock on imap inode. 2018 * this AG. Must have read lock on imap inode.
2031 * 2019 *
2032 * PARAMETERS: 2020 * PARAMETERS:
2033 * imap - pointer to inode map control structure. 2021 * imap - pointer to inode map control structure.
2034 * iagp - pointer to iag. 2022 * iagp - pointer to iag.
2035 * ino - inode number to be allocated within the iag. 2023 * ino - inode number to be allocated within the iag.
2036 * 2024 *
2037 * RETURN VALUES: 2025 * RETURN VALUES:
2038 * 0 - success. 2026 * 0 - success.
2039 * -ENOSPC - insufficient disk resources. 2027 * -ENOSPC - insufficient disk resources.
2040 * -EIO - i/o error. 2028 * -EIO - i/o error.
2041 */ 2029 */
2042static int diAllocBit(struct inomap * imap, struct iag * iagp, int ino) 2030static int diAllocBit(struct inomap * imap, struct iag * iagp, int ino)
2043{ 2031{
@@ -2144,11 +2132,11 @@ static int diAllocBit(struct inomap * imap, struct iag * iagp, int ino)
2144 2132
2145 2133
2146/* 2134/*
2147 * NAME: diNewExt(imap,iagp,extno) 2135 * NAME: diNewExt(imap,iagp,extno)
2148 * 2136 *
2149 * FUNCTION: initialize a new extent of inodes for an iag, allocating 2137 * FUNCTION: initialize a new extent of inodes for an iag, allocating
2150 * the first inode of the extent for use for the current 2138 * the first inode of the extent for use for the current
2151 * allocation request. 2139 * allocation request.
2152 * 2140 *
2153 * disk resources are allocated for the new extent of inodes 2141 * disk resources are allocated for the new extent of inodes
2154 * and the inodes themselves are initialized to reflect their 2142 * and the inodes themselves are initialized to reflect their
@@ -2177,14 +2165,14 @@ static int diAllocBit(struct inomap * imap, struct iag * iagp, int ino)
2177 * this AG. Must have read lock on imap inode. 2165 * this AG. Must have read lock on imap inode.
2178 * 2166 *
2179 * PARAMETERS: 2167 * PARAMETERS:
2180 * imap - pointer to inode map control structure. 2168 * imap - pointer to inode map control structure.
2181 * iagp - pointer to iag. 2169 * iagp - pointer to iag.
2182 * extno - extent number. 2170 * extno - extent number.
2183 * 2171 *
2184 * RETURN VALUES: 2172 * RETURN VALUES:
2185 * 0 - success. 2173 * 0 - success.
2186 * -ENOSPC - insufficient disk resources. 2174 * -ENOSPC - insufficient disk resources.
2187 * -EIO - i/o error. 2175 * -EIO - i/o error.
2188 */ 2176 */
2189static int diNewExt(struct inomap * imap, struct iag * iagp, int extno) 2177static int diNewExt(struct inomap * imap, struct iag * iagp, int extno)
2190{ 2178{
@@ -2430,7 +2418,7 @@ static int diNewExt(struct inomap * imap, struct iag * iagp, int extno)
2430 2418
2431 2419
2432/* 2420/*
2433 * NAME: diNewIAG(imap,iagnop,agno) 2421 * NAME: diNewIAG(imap,iagnop,agno)
2434 * 2422 *
2435 * FUNCTION: allocate a new iag for an allocation group. 2423 * FUNCTION: allocate a new iag for an allocation group.
2436 * 2424 *
@@ -2443,16 +2431,16 @@ static int diNewExt(struct inomap * imap, struct iag * iagp, int extno)
2443 * and returned to satisfy the request. 2431 * and returned to satisfy the request.
2444 * 2432 *
2445 * PARAMETERS: 2433 * PARAMETERS:
2446 * imap - pointer to inode map control structure. 2434 * imap - pointer to inode map control structure.
2447 * iagnop - pointer to an iag number set with the number of the 2435 * iagnop - pointer to an iag number set with the number of the
2448 * newly allocated iag upon successful return. 2436 * newly allocated iag upon successful return.
2449 * agno - allocation group number. 2437 * agno - allocation group number.
2450 * bpp - Buffer pointer to be filled in with new IAG's buffer 2438 * bpp - Buffer pointer to be filled in with new IAG's buffer
2451 * 2439 *
2452 * RETURN VALUES: 2440 * RETURN VALUES:
2453 * 0 - success. 2441 * 0 - success.
2454 * -ENOSPC - insufficient disk resources. 2442 * -ENOSPC - insufficient disk resources.
2455 * -EIO - i/o error. 2443 * -EIO - i/o error.
2456 * 2444 *
2457 * serialization: 2445 * serialization:
2458 * AG lock held on entry/exit; 2446 * AG lock held on entry/exit;
@@ -2461,7 +2449,7 @@ static int diNewExt(struct inomap * imap, struct iag * iagp, int extno)
2461 * 2449 *
2462 * note: new iag transaction: 2450 * note: new iag transaction:
2463 * . synchronously write iag; 2451 * . synchronously write iag;
2464 * . write log of xtree and inode of imap; 2452 * . write log of xtree and inode of imap;
2465 * . commit; 2453 * . commit;
2466 * . synchronous write of xtree (right to left, bottom to top); 2454 * . synchronous write of xtree (right to left, bottom to top);
2467 * . at start of logredo(): init in-memory imap with one additional iag page; 2455 * . at start of logredo(): init in-memory imap with one additional iag page;
@@ -2481,9 +2469,6 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
2481 s64 xaddr = 0; 2469 s64 xaddr = 0;
2482 s64 blkno; 2470 s64 blkno;
2483 tid_t tid; 2471 tid_t tid;
2484#ifdef _STILL_TO_PORT
2485 xad_t xad;
2486#endif /* _STILL_TO_PORT */
2487 struct inode *iplist[1]; 2472 struct inode *iplist[1];
2488 2473
2489 /* pick up pointers to the inode map and mount inodes */ 2474 /* pick up pointers to the inode map and mount inodes */
@@ -2674,15 +2659,15 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
2674} 2659}
2675 2660
2676/* 2661/*
2677 * NAME: diIAGRead() 2662 * NAME: diIAGRead()
2678 * 2663 *
2679 * FUNCTION: get the buffer for the specified iag within a fileset 2664 * FUNCTION: get the buffer for the specified iag within a fileset
2680 * or aggregate inode map. 2665 * or aggregate inode map.
2681 * 2666 *
2682 * PARAMETERS: 2667 * PARAMETERS:
2683 * imap - pointer to inode map control structure. 2668 * imap - pointer to inode map control structure.
2684 * iagno - iag number. 2669 * iagno - iag number.
2685 * bpp - point to buffer pointer to be filled in on successful 2670 * bpp - point to buffer pointer to be filled in on successful
2686 * exit. 2671 * exit.
2687 * 2672 *
2688 * SERIALIZATION: 2673 * SERIALIZATION:
@@ -2691,8 +2676,8 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
2691 * the read lock is unnecessary.) 2676 * the read lock is unnecessary.)
2692 * 2677 *
2693 * RETURN VALUES: 2678 * RETURN VALUES:
2694 * 0 - success. 2679 * 0 - success.
2695 * -EIO - i/o error. 2680 * -EIO - i/o error.
2696 */ 2681 */
2697static int diIAGRead(struct inomap * imap, int iagno, struct metapage ** mpp) 2682static int diIAGRead(struct inomap * imap, int iagno, struct metapage ** mpp)
2698{ 2683{
@@ -2712,17 +2697,17 @@ static int diIAGRead(struct inomap * imap, int iagno, struct metapage ** mpp)
2712} 2697}
2713 2698
2714/* 2699/*
2715 * NAME: diFindFree() 2700 * NAME: diFindFree()
2716 * 2701 *
2717 * FUNCTION: find the first free bit in a word starting at 2702 * FUNCTION: find the first free bit in a word starting at
2718 * the specified bit position. 2703 * the specified bit position.
2719 * 2704 *
2720 * PARAMETERS: 2705 * PARAMETERS:
2721 * word - word to be examined. 2706 * word - word to be examined.
2722 * start - starting bit position. 2707 * start - starting bit position.
2723 * 2708 *
2724 * RETURN VALUES: 2709 * RETURN VALUES:
2725 * bit position of first free bit in the word or 32 if 2710 * bit position of first free bit in the word or 32 if
2726 * no free bits were found. 2711 * no free bits were found.
2727 */ 2712 */
2728static int diFindFree(u32 word, int start) 2713static int diFindFree(u32 word, int start)
@@ -2897,7 +2882,7 @@ int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
2897 atomic_read(&imap->im_numfree)); 2882 atomic_read(&imap->im_numfree));
2898 2883
2899 /* 2884 /*
2900 * reconstruct imap 2885 * reconstruct imap
2901 * 2886 *
2902 * coalesce contiguous k (newAGSize/oldAGSize) AGs; 2887 * coalesce contiguous k (newAGSize/oldAGSize) AGs;
2903 * i.e., (AGi, ..., AGj) where i = k*n and j = k*(n+1) - 1 to AGn; 2888 * i.e., (AGi, ..., AGj) where i = k*n and j = k*(n+1) - 1 to AGn;
@@ -2913,7 +2898,7 @@ int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
2913 } 2898 }
2914 2899
2915 /* 2900 /*
2916 * process each iag page of the map. 2901 * process each iag page of the map.
2917 * 2902 *
2918 * rebuild AG Free Inode List, AG Free Inode Extent List; 2903 * rebuild AG Free Inode List, AG Free Inode Extent List;
2919 */ 2904 */
@@ -2932,7 +2917,7 @@ int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
2932 2917
2933 /* leave free iag in the free iag list */ 2918 /* leave free iag in the free iag list */
2934 if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) { 2919 if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) {
2935 release_metapage(bp); 2920 release_metapage(bp);
2936 continue; 2921 continue;
2937 } 2922 }
2938 2923
@@ -3063,13 +3048,13 @@ static void duplicateIXtree(struct super_block *sb, s64 blkno,
3063} 3048}
3064 3049
3065/* 3050/*
3066 * NAME: copy_from_dinode() 3051 * NAME: copy_from_dinode()
3067 * 3052 *
3068 * FUNCTION: Copies inode info from disk inode to in-memory inode 3053 * FUNCTION: Copies inode info from disk inode to in-memory inode
3069 * 3054 *
3070 * RETURN VALUES: 3055 * RETURN VALUES:
3071 * 0 - success 3056 * 0 - success
3072 * -ENOMEM - insufficient memory 3057 * -ENOMEM - insufficient memory
3073 */ 3058 */
3074static int copy_from_dinode(struct dinode * dip, struct inode *ip) 3059static int copy_from_dinode(struct dinode * dip, struct inode *ip)
3075{ 3060{
@@ -3151,9 +3136,9 @@ static int copy_from_dinode(struct dinode * dip, struct inode *ip)
3151} 3136}
3152 3137
3153/* 3138/*
3154 * NAME: copy_to_dinode() 3139 * NAME: copy_to_dinode()
3155 * 3140 *
3156 * FUNCTION: Copies inode info from in-memory inode to disk inode 3141 * FUNCTION: Copies inode info from in-memory inode to disk inode
3157 */ 3142 */
3158static void copy_to_dinode(struct dinode * dip, struct inode *ip) 3143static void copy_to_dinode(struct dinode * dip, struct inode *ip)
3159{ 3144{
diff --git a/fs/jfs/jfs_imap.h b/fs/jfs/jfs_imap.h
index 4f9c346ed498..610a0e9d8941 100644
--- a/fs/jfs/jfs_imap.h
+++ b/fs/jfs/jfs_imap.h
@@ -24,17 +24,17 @@
24 * jfs_imap.h: disk inode manager 24 * jfs_imap.h: disk inode manager
25 */ 25 */
26 26
27#define EXTSPERIAG 128 /* number of disk inode extent per iag */ 27#define EXTSPERIAG 128 /* number of disk inode extent per iag */
28#define IMAPBLKNO 0 /* lblkno of dinomap within inode map */ 28#define IMAPBLKNO 0 /* lblkno of dinomap within inode map */
29#define SMAPSZ 4 /* number of words per summary map */ 29#define SMAPSZ 4 /* number of words per summary map */
30#define EXTSPERSUM 32 /* number of extents per summary map entry */ 30#define EXTSPERSUM 32 /* number of extents per summary map entry */
31#define L2EXTSPERSUM 5 /* l2 number of extents per summary map */ 31#define L2EXTSPERSUM 5 /* l2 number of extents per summary map */
32#define PGSPERIEXT 4 /* number of 4K pages per dinode extent */ 32#define PGSPERIEXT 4 /* number of 4K pages per dinode extent */
33#define MAXIAGS ((1<<20)-1) /* maximum number of iags */ 33#define MAXIAGS ((1<<20)-1) /* maximum number of iags */
34#define MAXAG 128 /* maximum number of allocation groups */ 34#define MAXAG 128 /* maximum number of allocation groups */
35 35
36#define AMAPSIZE 512 /* bytes in the IAG allocation maps */ 36#define AMAPSIZE 512 /* bytes in the IAG allocation maps */
37#define SMAPSIZE 16 /* bytes in the IAG summary maps */ 37#define SMAPSIZE 16 /* bytes in the IAG summary maps */
38 38
39/* convert inode number to iag number */ 39/* convert inode number to iag number */
40#define INOTOIAG(ino) ((ino) >> L2INOSPERIAG) 40#define INOTOIAG(ino) ((ino) >> L2INOSPERIAG)
@@ -60,31 +60,31 @@
60 * inode allocation group page (per 4096 inodes of an AG) 60 * inode allocation group page (per 4096 inodes of an AG)
61 */ 61 */
62struct iag { 62struct iag {
63 __le64 agstart; /* 8: starting block of ag */ 63 __le64 agstart; /* 8: starting block of ag */
64 __le32 iagnum; /* 4: inode allocation group number */ 64 __le32 iagnum; /* 4: inode allocation group number */
65 __le32 inofreefwd; /* 4: ag inode free list forward */ 65 __le32 inofreefwd; /* 4: ag inode free list forward */
66 __le32 inofreeback; /* 4: ag inode free list back */ 66 __le32 inofreeback; /* 4: ag inode free list back */
67 __le32 extfreefwd; /* 4: ag inode extent free list forward */ 67 __le32 extfreefwd; /* 4: ag inode extent free list forward */
68 __le32 extfreeback; /* 4: ag inode extent free list back */ 68 __le32 extfreeback; /* 4: ag inode extent free list back */
69 __le32 iagfree; /* 4: iag free list */ 69 __le32 iagfree; /* 4: iag free list */
70 70
71 /* summary map: 1 bit per inode extent */ 71 /* summary map: 1 bit per inode extent */
72 __le32 inosmap[SMAPSZ]; /* 16: sum map of mapwords w/ free inodes; 72 __le32 inosmap[SMAPSZ]; /* 16: sum map of mapwords w/ free inodes;
73 * note: this indicates free and backed 73 * note: this indicates free and backed
74 * inodes, if the extent is not backed the 74 * inodes, if the extent is not backed the
75 * value will be 1. if the extent is 75 * value will be 1. if the extent is
76 * backed but all inodes are being used the 76 * backed but all inodes are being used the
77 * value will be 1. if the extent is 77 * value will be 1. if the extent is
78 * backed but at least one of the inodes is 78 * backed but at least one of the inodes is
79 * free the value will be 0. 79 * free the value will be 0.
80 */ 80 */
81 __le32 extsmap[SMAPSZ]; /* 16: sum map of mapwords w/ free extents */ 81 __le32 extsmap[SMAPSZ]; /* 16: sum map of mapwords w/ free extents */
82 __le32 nfreeinos; /* 4: number of free inodes */ 82 __le32 nfreeinos; /* 4: number of free inodes */
83 __le32 nfreeexts; /* 4: number of free extents */ 83 __le32 nfreeexts; /* 4: number of free extents */
84 /* (72) */ 84 /* (72) */
85 u8 pad[1976]; /* 1976: pad to 2048 bytes */ 85 u8 pad[1976]; /* 1976: pad to 2048 bytes */
86 /* allocation bit map: 1 bit per inode (0 - free, 1 - allocated) */ 86 /* allocation bit map: 1 bit per inode (0 - free, 1 - allocated) */
87 __le32 wmap[EXTSPERIAG]; /* 512: working allocation map */ 87 __le32 wmap[EXTSPERIAG]; /* 512: working allocation map */
88 __le32 pmap[EXTSPERIAG]; /* 512: persistent allocation map */ 88 __le32 pmap[EXTSPERIAG]; /* 512: persistent allocation map */
89 pxd_t inoext[EXTSPERIAG]; /* 1024: inode extent addresses */ 89 pxd_t inoext[EXTSPERIAG]; /* 1024: inode extent addresses */
90}; /* (4096) */ 90}; /* (4096) */
@@ -93,44 +93,44 @@ struct iag {
93 * per AG control information (in inode map control page) 93 * per AG control information (in inode map control page)
94 */ 94 */
95struct iagctl_disk { 95struct iagctl_disk {
96 __le32 inofree; /* 4: free inode list anchor */ 96 __le32 inofree; /* 4: free inode list anchor */
97 __le32 extfree; /* 4: free extent list anchor */ 97 __le32 extfree; /* 4: free extent list anchor */
98 __le32 numinos; /* 4: number of backed inodes */ 98 __le32 numinos; /* 4: number of backed inodes */
99 __le32 numfree; /* 4: number of free inodes */ 99 __le32 numfree; /* 4: number of free inodes */
100}; /* (16) */ 100}; /* (16) */
101 101
102struct iagctl { 102struct iagctl {
103 int inofree; /* free inode list anchor */ 103 int inofree; /* free inode list anchor */
104 int extfree; /* free extent list anchor */ 104 int extfree; /* free extent list anchor */
105 int numinos; /* number of backed inodes */ 105 int numinos; /* number of backed inodes */
106 int numfree; /* number of free inodes */ 106 int numfree; /* number of free inodes */
107}; 107};
108 108
109/* 109/*
110 * per fileset/aggregate inode map control page 110 * per fileset/aggregate inode map control page
111 */ 111 */
112struct dinomap_disk { 112struct dinomap_disk {
113 __le32 in_freeiag; /* 4: free iag list anchor */ 113 __le32 in_freeiag; /* 4: free iag list anchor */
114 __le32 in_nextiag; /* 4: next free iag number */ 114 __le32 in_nextiag; /* 4: next free iag number */
115 __le32 in_numinos; /* 4: num of backed inodes */ 115 __le32 in_numinos; /* 4: num of backed inodes */
116 __le32 in_numfree; /* 4: num of free backed inodes */ 116 __le32 in_numfree; /* 4: num of free backed inodes */
117 __le32 in_nbperiext; /* 4: num of blocks per inode extent */ 117 __le32 in_nbperiext; /* 4: num of blocks per inode extent */
118 __le32 in_l2nbperiext; /* 4: l2 of in_nbperiext */ 118 __le32 in_l2nbperiext; /* 4: l2 of in_nbperiext */
119 __le32 in_diskblock; /* 4: for standalone test driver */ 119 __le32 in_diskblock; /* 4: for standalone test driver */
120 __le32 in_maxag; /* 4: for standalone test driver */ 120 __le32 in_maxag; /* 4: for standalone test driver */
121 u8 pad[2016]; /* 2016: pad to 2048 */ 121 u8 pad[2016]; /* 2016: pad to 2048 */
122 struct iagctl_disk in_agctl[MAXAG]; /* 2048: AG control information */ 122 struct iagctl_disk in_agctl[MAXAG]; /* 2048: AG control information */
123}; /* (4096) */ 123}; /* (4096) */
124 124
125struct dinomap { 125struct dinomap {
126 int in_freeiag; /* free iag list anchor */ 126 int in_freeiag; /* free iag list anchor */
127 int in_nextiag; /* next free iag number */ 127 int in_nextiag; /* next free iag number */
128 int in_numinos; /* num of backed inodes */ 128 int in_numinos; /* num of backed inodes */
129 int in_numfree; /* num of free backed inodes */ 129 int in_numfree; /* num of free backed inodes */
130 int in_nbperiext; /* num of blocks per inode extent */ 130 int in_nbperiext; /* num of blocks per inode extent */
131 int in_l2nbperiext; /* l2 of in_nbperiext */ 131 int in_l2nbperiext; /* l2 of in_nbperiext */
132 int in_diskblock; /* for standalone test driver */ 132 int in_diskblock; /* for standalone test driver */
133 int in_maxag; /* for standalone test driver */ 133 int in_maxag; /* for standalone test driver */
134 struct iagctl in_agctl[MAXAG]; /* AG control information */ 134 struct iagctl in_agctl[MAXAG]; /* AG control information */
135}; 135};
136 136
@@ -139,9 +139,9 @@ struct dinomap {
139 */ 139 */
140struct inomap { 140struct inomap {
141 struct dinomap im_imap; /* 4096: inode allocation control */ 141 struct dinomap im_imap; /* 4096: inode allocation control */
142 struct inode *im_ipimap; /* 4: ptr to inode for imap */ 142 struct inode *im_ipimap; /* 4: ptr to inode for imap */
143 struct mutex im_freelock; /* 4: iag free list lock */ 143 struct mutex im_freelock; /* 4: iag free list lock */
144 struct mutex im_aglock[MAXAG]; /* 512: per AG locks */ 144 struct mutex im_aglock[MAXAG]; /* 512: per AG locks */
145 u32 *im_DBGdimap; 145 u32 *im_DBGdimap;
146 atomic_t im_numinos; /* num of backed inodes */ 146 atomic_t im_numinos; /* num of backed inodes */
147 atomic_t im_numfree; /* num of free backed inodes */ 147 atomic_t im_numfree; /* num of free backed inodes */
diff --git a/fs/jfs/jfs_incore.h b/fs/jfs/jfs_incore.h
index 8f453eff3c83..cb8f30985ad1 100644
--- a/fs/jfs/jfs_incore.h
+++ b/fs/jfs/jfs_incore.h
@@ -40,7 +40,7 @@ struct jfs_inode_info {
40 uint mode2; /* jfs-specific mode */ 40 uint mode2; /* jfs-specific mode */
41 uint saved_uid; /* saved for uid mount option */ 41 uint saved_uid; /* saved for uid mount option */
42 uint saved_gid; /* saved for gid mount option */ 42 uint saved_gid; /* saved for gid mount option */
43 pxd_t ixpxd; /* inode extent descriptor */ 43 pxd_t ixpxd; /* inode extent descriptor */
44 dxd_t acl; /* dxd describing acl */ 44 dxd_t acl; /* dxd describing acl */
45 dxd_t ea; /* dxd describing ea */ 45 dxd_t ea; /* dxd describing ea */
46 time_t otime; /* time created */ 46 time_t otime; /* time created */
@@ -190,7 +190,7 @@ struct jfs_sb_info {
190 uint gengen; /* inode generation generator*/ 190 uint gengen; /* inode generation generator*/
191 uint inostamp; /* shows inode belongs to fileset*/ 191 uint inostamp; /* shows inode belongs to fileset*/
192 192
193 /* Formerly in ipbmap */ 193 /* Formerly in ipbmap */
194 struct bmap *bmap; /* incore bmap descriptor */ 194 struct bmap *bmap; /* incore bmap descriptor */
195 struct nls_table *nls_tab; /* current codepage */ 195 struct nls_table *nls_tab; /* current codepage */
196 struct inode *direct_inode; /* metadata inode */ 196 struct inode *direct_inode; /* metadata inode */
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index 44a2f33cb98d..88eae45a4644 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -244,7 +244,7 @@ int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
244 goto writeRecord; 244 goto writeRecord;
245 245
246 /* 246 /*
247 * initialize/update page/transaction recovery lsn 247 * initialize/update page/transaction recovery lsn
248 */ 248 */
249 lsn = log->lsn; 249 lsn = log->lsn;
250 250
@@ -263,7 +263,7 @@ int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
263 } 263 }
264 264
265 /* 265 /*
266 * initialize/update lsn of tblock of the page 266 * initialize/update lsn of tblock of the page
267 * 267 *
268 * transaction inherits oldest lsn of pages associated 268 * transaction inherits oldest lsn of pages associated
269 * with allocation/deallocation of resources (their 269 * with allocation/deallocation of resources (their
@@ -307,7 +307,7 @@ int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
307 LOGSYNC_UNLOCK(log, flags); 307 LOGSYNC_UNLOCK(log, flags);
308 308
309 /* 309 /*
310 * write the log record 310 * write the log record
311 */ 311 */
312 writeRecord: 312 writeRecord:
313 lsn = lmWriteRecord(log, tblk, lrd, tlck); 313 lsn = lmWriteRecord(log, tblk, lrd, tlck);
@@ -372,7 +372,7 @@ lmWriteRecord(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
372 goto moveLrd; 372 goto moveLrd;
373 373
374 /* 374 /*
375 * move log record data 375 * move log record data
376 */ 376 */
377 /* retrieve source meta-data page to log */ 377 /* retrieve source meta-data page to log */
378 if (tlck->flag & tlckPAGELOCK) { 378 if (tlck->flag & tlckPAGELOCK) {
@@ -465,7 +465,7 @@ lmWriteRecord(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
465 } 465 }
466 466
467 /* 467 /*
468 * move log record descriptor 468 * move log record descriptor
469 */ 469 */
470 moveLrd: 470 moveLrd:
471 lrd->length = cpu_to_le16(len); 471 lrd->length = cpu_to_le16(len);
@@ -574,7 +574,7 @@ static int lmNextPage(struct jfs_log * log)
574 LOGGC_LOCK(log); 574 LOGGC_LOCK(log);
575 575
576 /* 576 /*
577 * write or queue the full page at the tail of write queue 577 * write or queue the full page at the tail of write queue
578 */ 578 */
579 /* get the tail tblk on commit queue */ 579 /* get the tail tblk on commit queue */
580 if (list_empty(&log->cqueue)) 580 if (list_empty(&log->cqueue))
@@ -625,7 +625,7 @@ static int lmNextPage(struct jfs_log * log)
625 LOGGC_UNLOCK(log); 625 LOGGC_UNLOCK(log);
626 626
627 /* 627 /*
628 * allocate/initialize next page 628 * allocate/initialize next page
629 */ 629 */
630 /* if log wraps, the first data page of log is 2 630 /* if log wraps, the first data page of log is 2
631 * (0 never used, 1 is superblock). 631 * (0 never used, 1 is superblock).
@@ -953,7 +953,7 @@ static int lmLogSync(struct jfs_log * log, int hard_sync)
953 } 953 }
954 954
955 /* 955 /*
956 * forward syncpt 956 * forward syncpt
957 */ 957 */
958 /* if last sync is same as last syncpt, 958 /* if last sync is same as last syncpt,
959 * invoke sync point forward processing to update sync. 959 * invoke sync point forward processing to update sync.
@@ -989,7 +989,7 @@ static int lmLogSync(struct jfs_log * log, int hard_sync)
989 lsn = log->lsn; 989 lsn = log->lsn;
990 990
991 /* 991 /*
992 * setup next syncpt trigger (SWAG) 992 * setup next syncpt trigger (SWAG)
993 */ 993 */
994 logsize = log->logsize; 994 logsize = log->logsize;
995 995
@@ -1000,11 +1000,11 @@ static int lmLogSync(struct jfs_log * log, int hard_sync)
1000 if (more < 2 * LOGPSIZE) { 1000 if (more < 2 * LOGPSIZE) {
1001 jfs_warn("\n ... Log Wrap ... Log Wrap ... Log Wrap ...\n"); 1001 jfs_warn("\n ... Log Wrap ... Log Wrap ... Log Wrap ...\n");
1002 /* 1002 /*
1003 * log wrapping 1003 * log wrapping
1004 * 1004 *
1005 * option 1 - panic ? No.! 1005 * option 1 - panic ? No.!
1006 * option 2 - shutdown file systems 1006 * option 2 - shutdown file systems
1007 * associated with log ? 1007 * associated with log ?
1008 * option 3 - extend log ? 1008 * option 3 - extend log ?
1009 */ 1009 */
1010 /* 1010 /*
@@ -1062,7 +1062,7 @@ void jfs_syncpt(struct jfs_log *log, int hard_sync)
1062/* 1062/*
1063 * NAME: lmLogOpen() 1063 * NAME: lmLogOpen()
1064 * 1064 *
1065 * FUNCTION: open the log on first open; 1065 * FUNCTION: open the log on first open;
1066 * insert filesystem in the active list of the log. 1066 * insert filesystem in the active list of the log.
1067 * 1067 *
1068 * PARAMETER: ipmnt - file system mount inode 1068 * PARAMETER: ipmnt - file system mount inode
@@ -1113,7 +1113,7 @@ int lmLogOpen(struct super_block *sb)
1113 init_waitqueue_head(&log->syncwait); 1113 init_waitqueue_head(&log->syncwait);
1114 1114
1115 /* 1115 /*
1116 * external log as separate logical volume 1116 * external log as separate logical volume
1117 * 1117 *
1118 * file systems to log may have n-to-1 relationship; 1118 * file systems to log may have n-to-1 relationship;
1119 */ 1119 */
@@ -1155,7 +1155,7 @@ journal_found:
1155 return 0; 1155 return 0;
1156 1156
1157 /* 1157 /*
1158 * unwind on error 1158 * unwind on error
1159 */ 1159 */
1160 shutdown: /* unwind lbmLogInit() */ 1160 shutdown: /* unwind lbmLogInit() */
1161 list_del(&log->journal_list); 1161 list_del(&log->journal_list);
@@ -1427,7 +1427,7 @@ int lmLogInit(struct jfs_log * log)
1427 return 0; 1427 return 0;
1428 1428
1429 /* 1429 /*
1430 * unwind on error 1430 * unwind on error
1431 */ 1431 */
1432 errout30: /* release log page */ 1432 errout30: /* release log page */
1433 log->wqueue = NULL; 1433 log->wqueue = NULL;
@@ -1480,7 +1480,7 @@ int lmLogClose(struct super_block *sb)
1480 1480
1481 if (test_bit(log_INLINELOG, &log->flag)) { 1481 if (test_bit(log_INLINELOG, &log->flag)) {
1482 /* 1482 /*
1483 * in-line log in host file system 1483 * in-line log in host file system
1484 */ 1484 */
1485 rc = lmLogShutdown(log); 1485 rc = lmLogShutdown(log);
1486 kfree(log); 1486 kfree(log);
@@ -1504,7 +1504,7 @@ int lmLogClose(struct super_block *sb)
1504 goto out; 1504 goto out;
1505 1505
1506 /* 1506 /*
1507 * external log as separate logical volume 1507 * external log as separate logical volume
1508 */ 1508 */
1509 list_del(&log->journal_list); 1509 list_del(&log->journal_list);
1510 bdev = log->bdev; 1510 bdev = log->bdev;
@@ -1723,7 +1723,7 @@ int lmLogShutdown(struct jfs_log * log)
1723 * 1723 *
1724 * PARAMETE: log - pointer to logs inode. 1724 * PARAMETE: log - pointer to logs inode.
1725 * fsdev - kdev_t of filesystem. 1725 * fsdev - kdev_t of filesystem.
1726 * serial - pointer to returned log serial number 1726 * serial - pointer to returned log serial number
1727 * activate - insert/remove device from active list. 1727 * activate - insert/remove device from active list.
1728 * 1728 *
1729 * RETURN: 0 - success 1729 * RETURN: 0 - success
@@ -1963,7 +1963,7 @@ static void lbmfree(struct lbuf * bp)
1963 * FUNCTION: add a log buffer to the log redrive list 1963 * FUNCTION: add a log buffer to the log redrive list
1964 * 1964 *
1965 * PARAMETER: 1965 * PARAMETER:
1966 * bp - log buffer 1966 * bp - log buffer
1967 * 1967 *
1968 * NOTES: 1968 * NOTES:
1969 * Takes log_redrive_lock. 1969 * Takes log_redrive_lock.
@@ -2054,7 +2054,7 @@ static void lbmWrite(struct jfs_log * log, struct lbuf * bp, int flag,
2054 bp->l_flag = flag; 2054 bp->l_flag = flag;
2055 2055
2056 /* 2056 /*
2057 * insert bp at tail of write queue associated with log 2057 * insert bp at tail of write queue associated with log
2058 * 2058 *
2059 * (request is either for bp already/currently at head of queue 2059 * (request is either for bp already/currently at head of queue
2060 * or new bp to be inserted at tail) 2060 * or new bp to be inserted at tail)
@@ -2117,7 +2117,7 @@ static void lbmDirectWrite(struct jfs_log * log, struct lbuf * bp, int flag)
2117 log->base + (bp->l_pn << (L2LOGPSIZE - log->l2bsize)); 2117 log->base + (bp->l_pn << (L2LOGPSIZE - log->l2bsize));
2118 2118
2119 /* 2119 /*
2120 * initiate pageout of the page 2120 * initiate pageout of the page
2121 */ 2121 */
2122 lbmStartIO(bp); 2122 lbmStartIO(bp);
2123} 2123}
@@ -2128,7 +2128,7 @@ static void lbmDirectWrite(struct jfs_log * log, struct lbuf * bp, int flag)
2128 * 2128 *
2129 * FUNCTION: Interface to DD strategy routine 2129 * FUNCTION: Interface to DD strategy routine
2130 * 2130 *
2131 * RETURN: none 2131 * RETURN: none
2132 * 2132 *
2133 * serialization: LCACHE_LOCK() is NOT held during log i/o; 2133 * serialization: LCACHE_LOCK() is NOT held during log i/o;
2134 */ 2134 */
@@ -2222,7 +2222,7 @@ static int lbmIODone(struct bio *bio, unsigned int bytes_done, int error)
2222 bio_put(bio); 2222 bio_put(bio);
2223 2223
2224 /* 2224 /*
2225 * pagein completion 2225 * pagein completion
2226 */ 2226 */
2227 if (bp->l_flag & lbmREAD) { 2227 if (bp->l_flag & lbmREAD) {
2228 bp->l_flag &= ~lbmREAD; 2228 bp->l_flag &= ~lbmREAD;
@@ -2236,7 +2236,7 @@ static int lbmIODone(struct bio *bio, unsigned int bytes_done, int error)
2236 } 2236 }
2237 2237
2238 /* 2238 /*
2239 * pageout completion 2239 * pageout completion
2240 * 2240 *
2241 * the bp at the head of write queue has completed pageout. 2241 * the bp at the head of write queue has completed pageout.
2242 * 2242 *
@@ -2302,7 +2302,7 @@ static int lbmIODone(struct bio *bio, unsigned int bytes_done, int error)
2302 } 2302 }
2303 2303
2304 /* 2304 /*
2305 * synchronous pageout: 2305 * synchronous pageout:
2306 * 2306 *
2307 * buffer has not necessarily been removed from write queue 2307 * buffer has not necessarily been removed from write queue
2308 * (e.g., synchronous write of partial-page with COMMIT): 2308 * (e.g., synchronous write of partial-page with COMMIT):
@@ -2316,7 +2316,7 @@ static int lbmIODone(struct bio *bio, unsigned int bytes_done, int error)
2316 } 2316 }
2317 2317
2318 /* 2318 /*
2319 * Group Commit pageout: 2319 * Group Commit pageout:
2320 */ 2320 */
2321 else if (bp->l_flag & lbmGC) { 2321 else if (bp->l_flag & lbmGC) {
2322 LCACHE_UNLOCK(flags); 2322 LCACHE_UNLOCK(flags);
@@ -2324,7 +2324,7 @@ static int lbmIODone(struct bio *bio, unsigned int bytes_done, int error)
2324 } 2324 }
2325 2325
2326 /* 2326 /*
2327 * asynchronous pageout: 2327 * asynchronous pageout:
2328 * 2328 *
2329 * buffer must have been removed from write queue: 2329 * buffer must have been removed from write queue:
2330 * insert buffer at head of freelist where it can be recycled 2330 * insert buffer at head of freelist where it can be recycled
@@ -2375,7 +2375,7 @@ int jfsIOWait(void *arg)
2375 * FUNCTION: format file system log 2375 * FUNCTION: format file system log
2376 * 2376 *
2377 * PARAMETERS: 2377 * PARAMETERS:
2378 * log - volume log 2378 * log - volume log
2379 * logAddress - start address of log space in FS block 2379 * logAddress - start address of log space in FS block
2380 * logSize - length of log space in FS block; 2380 * logSize - length of log space in FS block;
2381 * 2381 *
@@ -2407,16 +2407,16 @@ int lmLogFormat(struct jfs_log *log, s64 logAddress, int logSize)
2407 npages = logSize >> sbi->l2nbperpage; 2407 npages = logSize >> sbi->l2nbperpage;
2408 2408
2409 /* 2409 /*
2410 * log space: 2410 * log space:
2411 * 2411 *
2412 * page 0 - reserved; 2412 * page 0 - reserved;
2413 * page 1 - log superblock; 2413 * page 1 - log superblock;
2414 * page 2 - log data page: A SYNC log record is written 2414 * page 2 - log data page: A SYNC log record is written
2415 * into this page at logform time; 2415 * into this page at logform time;
2416 * pages 3-N - log data page: set to empty log data pages; 2416 * pages 3-N - log data page: set to empty log data pages;
2417 */ 2417 */
2418 /* 2418 /*
2419 * init log superblock: log page 1 2419 * init log superblock: log page 1
2420 */ 2420 */
2421 logsuper = (struct logsuper *) bp->l_ldata; 2421 logsuper = (struct logsuper *) bp->l_ldata;
2422 2422
@@ -2436,7 +2436,7 @@ int lmLogFormat(struct jfs_log *log, s64 logAddress, int logSize)
2436 goto exit; 2436 goto exit;
2437 2437
2438 /* 2438 /*
2439 * init pages 2 to npages-1 as log data pages: 2439 * init pages 2 to npages-1 as log data pages:
2440 * 2440 *
2441 * log page sequence number (lpsn) initialization: 2441 * log page sequence number (lpsn) initialization:
2442 * 2442 *
@@ -2479,7 +2479,7 @@ int lmLogFormat(struct jfs_log *log, s64 logAddress, int logSize)
2479 goto exit; 2479 goto exit;
2480 2480
2481 /* 2481 /*
2482 * initialize succeeding log pages: lpsn = 0, 1, ..., (N-2) 2482 * initialize succeeding log pages: lpsn = 0, 1, ..., (N-2)
2483 */ 2483 */
2484 for (lspn = 0; lspn < npages - 3; lspn++) { 2484 for (lspn = 0; lspn < npages - 3; lspn++) {
2485 lp->h.page = lp->t.page = cpu_to_le32(lspn); 2485 lp->h.page = lp->t.page = cpu_to_le32(lspn);
@@ -2495,7 +2495,7 @@ int lmLogFormat(struct jfs_log *log, s64 logAddress, int logSize)
2495 rc = 0; 2495 rc = 0;
2496exit: 2496exit:
2497 /* 2497 /*
2498 * finalize log 2498 * finalize log
2499 */ 2499 */
2500 /* release the buffer */ 2500 /* release the buffer */
2501 lbmFree(bp); 2501 lbmFree(bp);
diff --git a/fs/jfs/jfs_logmgr.h b/fs/jfs/jfs_logmgr.h
index a53fb17ea219..1f85ef0ec045 100644
--- a/fs/jfs/jfs_logmgr.h
+++ b/fs/jfs/jfs_logmgr.h
@@ -144,7 +144,7 @@ struct logpage {
144 * 144 *
145 * (this comment should be rewritten !) 145 * (this comment should be rewritten !)
146 * jfs uses only "after" log records (only a single writer is allowed 146 * jfs uses only "after" log records (only a single writer is allowed
147 * in a page, pages are written to temporary paging space if 147 * in a page, pages are written to temporary paging space if
148 * if they must be written to disk before commit, and i/o is 148 * if they must be written to disk before commit, and i/o is
149 * scheduled for modified pages to their home location after 149 * scheduled for modified pages to their home location after
150 * the log records containing the after values and the commit 150 * the log records containing the after values and the commit
@@ -153,7 +153,7 @@ struct logpage {
153 * 153 *
154 * a log record consists of a data area of variable length followed by 154 * a log record consists of a data area of variable length followed by
155 * a descriptor of fixed size LOGRDSIZE bytes. 155 * a descriptor of fixed size LOGRDSIZE bytes.
156 * the data area is rounded up to an integral number of 4-bytes and 156 * the data area is rounded up to an integral number of 4-bytes and
157 * must be no longer than LOGPSIZE. 157 * must be no longer than LOGPSIZE.
158 * the descriptor is of size of multiple of 4-bytes and aligned on a 158 * the descriptor is of size of multiple of 4-bytes and aligned on a
159 * 4-byte boundary. 159 * 4-byte boundary.
@@ -215,13 +215,13 @@ struct lrd {
215 union { 215 union {
216 216
217 /* 217 /*
218 * COMMIT: commit 218 * COMMIT: commit
219 * 219 *
220 * transaction commit: no type-dependent information; 220 * transaction commit: no type-dependent information;
221 */ 221 */
222 222
223 /* 223 /*
224 * REDOPAGE: after-image 224 * REDOPAGE: after-image
225 * 225 *
226 * apply after-image; 226 * apply after-image;
227 * 227 *
@@ -236,7 +236,7 @@ struct lrd {
236 } redopage; /* (20) */ 236 } redopage; /* (20) */
237 237
238 /* 238 /*
239 * NOREDOPAGE: the page is freed 239 * NOREDOPAGE: the page is freed
240 * 240 *
241 * do not apply after-image records which precede this record 241 * do not apply after-image records which precede this record
242 * in the log with the same page block number to this page. 242 * in the log with the same page block number to this page.
@@ -252,7 +252,7 @@ struct lrd {
252 } noredopage; /* (20) */ 252 } noredopage; /* (20) */
253 253
254 /* 254 /*
255 * UPDATEMAP: update block allocation map 255 * UPDATEMAP: update block allocation map
256 * 256 *
257 * either in-line PXD, 257 * either in-line PXD,
258 * or out-of-line XADLIST; 258 * or out-of-line XADLIST;
@@ -268,7 +268,7 @@ struct lrd {
268 } updatemap; /* (20) */ 268 } updatemap; /* (20) */
269 269
270 /* 270 /*
271 * NOREDOINOEXT: the inode extent is freed 271 * NOREDOINOEXT: the inode extent is freed
272 * 272 *
273 * do not apply after-image records which precede this 273 * do not apply after-image records which precede this
274 * record in the log with the any of the 4 page block 274 * record in the log with the any of the 4 page block
@@ -286,7 +286,7 @@ struct lrd {
286 } noredoinoext; /* (20) */ 286 } noredoinoext; /* (20) */
287 287
288 /* 288 /*
289 * SYNCPT: log sync point 289 * SYNCPT: log sync point
290 * 290 *
291 * replay log upto syncpt address specified; 291 * replay log upto syncpt address specified;
292 */ 292 */
@@ -295,13 +295,13 @@ struct lrd {
295 } syncpt; 295 } syncpt;
296 296
297 /* 297 /*
298 * MOUNT: file system mount 298 * MOUNT: file system mount
299 * 299 *
300 * file system mount: no type-dependent information; 300 * file system mount: no type-dependent information;
301 */ 301 */
302 302
303 /* 303 /*
304 * ? FREEXTENT: free specified extent(s) 304 * ? FREEXTENT: free specified extent(s)
305 * 305 *
306 * free specified extent(s) from block allocation map 306 * free specified extent(s) from block allocation map
307 * N.B.: nextents should be length of data/sizeof(xad_t) 307 * N.B.: nextents should be length of data/sizeof(xad_t)
@@ -314,7 +314,7 @@ struct lrd {
314 } freextent; 314 } freextent;
315 315
316 /* 316 /*
317 * ? NOREDOFILE: this file is freed 317 * ? NOREDOFILE: this file is freed
318 * 318 *
319 * do not apply records which precede this record in the log 319 * do not apply records which precede this record in the log
320 * with the same inode number. 320 * with the same inode number.
@@ -330,7 +330,7 @@ struct lrd {
330 } noredofile; 330 } noredofile;
331 331
332 /* 332 /*
333 * ? NEWPAGE: 333 * ? NEWPAGE:
334 * 334 *
335 * metadata type dependent 335 * metadata type dependent
336 */ 336 */
@@ -342,7 +342,7 @@ struct lrd {
342 } newpage; 342 } newpage;
343 343
344 /* 344 /*
345 * ? DUMMY: filler 345 * ? DUMMY: filler
346 * 346 *
347 * no type-dependent information 347 * no type-dependent information
348 */ 348 */
diff --git a/fs/jfs/jfs_mount.c b/fs/jfs/jfs_mount.c
index 4dd479834897..644429acb8c0 100644
--- a/fs/jfs/jfs_mount.c
+++ b/fs/jfs/jfs_mount.c
@@ -80,7 +80,7 @@ static int logMOUNT(struct super_block *sb);
80 */ 80 */
81int jfs_mount(struct super_block *sb) 81int jfs_mount(struct super_block *sb)
82{ 82{
83 int rc = 0; /* Return code */ 83 int rc = 0; /* Return code */
84 struct jfs_sb_info *sbi = JFS_SBI(sb); 84 struct jfs_sb_info *sbi = JFS_SBI(sb);
85 struct inode *ipaimap = NULL; 85 struct inode *ipaimap = NULL;
86 struct inode *ipaimap2 = NULL; 86 struct inode *ipaimap2 = NULL;
@@ -169,7 +169,7 @@ int jfs_mount(struct super_block *sb)
169 sbi->ipaimap2 = NULL; 169 sbi->ipaimap2 = NULL;
170 170
171 /* 171 /*
172 * mount (the only/single) fileset 172 * mount (the only/single) fileset
173 */ 173 */
174 /* 174 /*
175 * open fileset inode allocation map (aka fileset inode) 175 * open fileset inode allocation map (aka fileset inode)
@@ -195,7 +195,7 @@ int jfs_mount(struct super_block *sb)
195 goto out; 195 goto out;
196 196
197 /* 197 /*
198 * unwind on error 198 * unwind on error
199 */ 199 */
200 errout41: /* close fileset inode allocation map inode */ 200 errout41: /* close fileset inode allocation map inode */
201 diFreeSpecial(ipimap); 201 diFreeSpecial(ipimap);
diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index 25430d0b0d59..f2dc4b986392 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -18,7 +18,7 @@
18 */ 18 */
19 19
20/* 20/*
21 * jfs_txnmgr.c: transaction manager 21 * jfs_txnmgr.c: transaction manager
22 * 22 *
23 * notes: 23 * notes:
24 * transaction starts with txBegin() and ends with txCommit() 24 * transaction starts with txBegin() and ends with txCommit()
@@ -60,7 +60,7 @@
60#include "jfs_debug.h" 60#include "jfs_debug.h"
61 61
62/* 62/*
63 * transaction management structures 63 * transaction management structures
64 */ 64 */
65static struct { 65static struct {
66 int freetid; /* index of a free tid structure */ 66 int freetid; /* index of a free tid structure */
@@ -103,19 +103,19 @@ module_param(nTxLock, int, 0);
103MODULE_PARM_DESC(nTxLock, 103MODULE_PARM_DESC(nTxLock,
104 "Number of transaction locks (max:65536)"); 104 "Number of transaction locks (max:65536)");
105 105
106struct tblock *TxBlock; /* transaction block table */ 106struct tblock *TxBlock; /* transaction block table */
107static int TxLockLWM; /* Low water mark for number of txLocks used */ 107static int TxLockLWM; /* Low water mark for number of txLocks used */
108static int TxLockHWM; /* High water mark for number of txLocks used */ 108static int TxLockHWM; /* High water mark for number of txLocks used */
109static int TxLockVHWM; /* Very High water mark */ 109static int TxLockVHWM; /* Very High water mark */
110struct tlock *TxLock; /* transaction lock table */ 110struct tlock *TxLock; /* transaction lock table */
111 111
112/* 112/*
113 * transaction management lock 113 * transaction management lock
114 */ 114 */
115static DEFINE_SPINLOCK(jfsTxnLock); 115static DEFINE_SPINLOCK(jfsTxnLock);
116 116
117#define TXN_LOCK() spin_lock(&jfsTxnLock) 117#define TXN_LOCK() spin_lock(&jfsTxnLock)
118#define TXN_UNLOCK() spin_unlock(&jfsTxnLock) 118#define TXN_UNLOCK() spin_unlock(&jfsTxnLock)
119 119
120#define LAZY_LOCK_INIT() spin_lock_init(&TxAnchor.LazyLock); 120#define LAZY_LOCK_INIT() spin_lock_init(&TxAnchor.LazyLock);
121#define LAZY_LOCK(flags) spin_lock_irqsave(&TxAnchor.LazyLock, flags) 121#define LAZY_LOCK(flags) spin_lock_irqsave(&TxAnchor.LazyLock, flags)
@@ -148,7 +148,7 @@ static inline void TXN_SLEEP_DROP_LOCK(wait_queue_head_t * event)
148#define TXN_WAKEUP(event) wake_up_all(event) 148#define TXN_WAKEUP(event) wake_up_all(event)
149 149
150/* 150/*
151 * statistics 151 * statistics
152 */ 152 */
153static struct { 153static struct {
154 tid_t maxtid; /* 4: biggest tid ever used */ 154 tid_t maxtid; /* 4: biggest tid ever used */
@@ -181,8 +181,8 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
181static void LogSyncRelease(struct metapage * mp); 181static void LogSyncRelease(struct metapage * mp);
182 182
183/* 183/*
184 * transaction block/lock management 184 * transaction block/lock management
185 * --------------------------------- 185 * ---------------------------------
186 */ 186 */
187 187
188/* 188/*
@@ -227,9 +227,9 @@ static void txLockFree(lid_t lid)
227} 227}
228 228
229/* 229/*
230 * NAME: txInit() 230 * NAME: txInit()
231 * 231 *
232 * FUNCTION: initialize transaction management structures 232 * FUNCTION: initialize transaction management structures
233 * 233 *
234 * RETURN: 234 * RETURN:
235 * 235 *
@@ -333,9 +333,9 @@ int txInit(void)
333} 333}
334 334
335/* 335/*
336 * NAME: txExit() 336 * NAME: txExit()
337 * 337 *
338 * FUNCTION: clean up when module is unloaded 338 * FUNCTION: clean up when module is unloaded
339 */ 339 */
340void txExit(void) 340void txExit(void)
341{ 341{
@@ -346,12 +346,12 @@ void txExit(void)
346} 346}
347 347
348/* 348/*
349 * NAME: txBegin() 349 * NAME: txBegin()
350 * 350 *
351 * FUNCTION: start a transaction. 351 * FUNCTION: start a transaction.
352 * 352 *
353 * PARAMETER: sb - superblock 353 * PARAMETER: sb - superblock
354 * flag - force for nested tx; 354 * flag - force for nested tx;
355 * 355 *
356 * RETURN: tid - transaction id 356 * RETURN: tid - transaction id
357 * 357 *
@@ -447,13 +447,13 @@ tid_t txBegin(struct super_block *sb, int flag)
447} 447}
448 448
449/* 449/*
450 * NAME: txBeginAnon() 450 * NAME: txBeginAnon()
451 * 451 *
452 * FUNCTION: start an anonymous transaction. 452 * FUNCTION: start an anonymous transaction.
453 * Blocks if logsync or available tlocks are low to prevent 453 * Blocks if logsync or available tlocks are low to prevent
454 * anonymous tlocks from depleting supply. 454 * anonymous tlocks from depleting supply.
455 * 455 *
456 * PARAMETER: sb - superblock 456 * PARAMETER: sb - superblock
457 * 457 *
458 * RETURN: none 458 * RETURN: none
459 */ 459 */
@@ -489,11 +489,11 @@ void txBeginAnon(struct super_block *sb)
489} 489}
490 490
491/* 491/*
492 * txEnd() 492 * txEnd()
493 * 493 *
494 * function: free specified transaction block. 494 * function: free specified transaction block.
495 * 495 *
496 * logsync barrier processing: 496 * logsync barrier processing:
497 * 497 *
498 * serialization: 498 * serialization:
499 */ 499 */
@@ -577,13 +577,13 @@ wakeup:
577} 577}
578 578
579/* 579/*
580 * txLock() 580 * txLock()
581 * 581 *
582 * function: acquire a transaction lock on the specified <mp> 582 * function: acquire a transaction lock on the specified <mp>
583 * 583 *
584 * parameter: 584 * parameter:
585 * 585 *
586 * return: transaction lock id 586 * return: transaction lock id
587 * 587 *
588 * serialization: 588 * serialization:
589 */ 589 */
@@ -857,17 +857,17 @@ struct tlock *txLock(tid_t tid, struct inode *ip, struct metapage * mp,
857} 857}
858 858
859/* 859/*
860 * NAME: txRelease() 860 * NAME: txRelease()
861 * 861 *
862 * FUNCTION: Release buffers associated with transaction locks, but don't 862 * FUNCTION: Release buffers associated with transaction locks, but don't
863 * mark homeok yet. The allows other transactions to modify 863 * mark homeok yet. The allows other transactions to modify
864 * buffers, but won't let them go to disk until commit record 864 * buffers, but won't let them go to disk until commit record
865 * actually gets written. 865 * actually gets written.
866 * 866 *
867 * PARAMETER: 867 * PARAMETER:
868 * tblk - 868 * tblk -
869 * 869 *
870 * RETURN: Errors from subroutines. 870 * RETURN: Errors from subroutines.
871 */ 871 */
872static void txRelease(struct tblock * tblk) 872static void txRelease(struct tblock * tblk)
873{ 873{
@@ -896,10 +896,10 @@ static void txRelease(struct tblock * tblk)
896} 896}
897 897
898/* 898/*
899 * NAME: txUnlock() 899 * NAME: txUnlock()
900 * 900 *
901 * FUNCTION: Initiates pageout of pages modified by tid in journalled 901 * FUNCTION: Initiates pageout of pages modified by tid in journalled
902 * objects and frees their lockwords. 902 * objects and frees their lockwords.
903 */ 903 */
904static void txUnlock(struct tblock * tblk) 904static void txUnlock(struct tblock * tblk)
905{ 905{
@@ -983,10 +983,10 @@ static void txUnlock(struct tblock * tblk)
983} 983}
984 984
985/* 985/*
986 * txMaplock() 986 * txMaplock()
987 * 987 *
988 * function: allocate a transaction lock for freed page/entry; 988 * function: allocate a transaction lock for freed page/entry;
989 * for freed page, maplock is used as xtlock/dtlock type; 989 * for freed page, maplock is used as xtlock/dtlock type;
990 */ 990 */
991struct tlock *txMaplock(tid_t tid, struct inode *ip, int type) 991struct tlock *txMaplock(tid_t tid, struct inode *ip, int type)
992{ 992{
@@ -1057,7 +1057,7 @@ struct tlock *txMaplock(tid_t tid, struct inode *ip, int type)
1057} 1057}
1058 1058
1059/* 1059/*
1060 * txLinelock() 1060 * txLinelock()
1061 * 1061 *
1062 * function: allocate a transaction lock for log vector list 1062 * function: allocate a transaction lock for log vector list
1063 */ 1063 */
@@ -1092,39 +1092,39 @@ struct linelock *txLinelock(struct linelock * tlock)
1092} 1092}
1093 1093
1094/* 1094/*
1095 * transaction commit management 1095 * transaction commit management
1096 * ----------------------------- 1096 * -----------------------------
1097 */ 1097 */
1098 1098
1099/* 1099/*
1100 * NAME: txCommit() 1100 * NAME: txCommit()
1101 * 1101 *
1102 * FUNCTION: commit the changes to the objects specified in 1102 * FUNCTION: commit the changes to the objects specified in
1103 * clist. For journalled segments only the 1103 * clist. For journalled segments only the
1104 * changes of the caller are committed, ie by tid. 1104 * changes of the caller are committed, ie by tid.
1105 * for non-journalled segments the data are flushed to 1105 * for non-journalled segments the data are flushed to
1106 * disk and then the change to the disk inode and indirect 1106 * disk and then the change to the disk inode and indirect
1107 * blocks committed (so blocks newly allocated to the 1107 * blocks committed (so blocks newly allocated to the
1108 * segment will be made a part of the segment atomically). 1108 * segment will be made a part of the segment atomically).
1109 * 1109 *
1110 * all of the segments specified in clist must be in 1110 * all of the segments specified in clist must be in
1111 * one file system. no more than 6 segments are needed 1111 * one file system. no more than 6 segments are needed
1112 * to handle all unix svcs. 1112 * to handle all unix svcs.
1113 * 1113 *
1114 * if the i_nlink field (i.e. disk inode link count) 1114 * if the i_nlink field (i.e. disk inode link count)
1115 * is zero, and the type of inode is a regular file or 1115 * is zero, and the type of inode is a regular file or
1116 * directory, or symbolic link , the inode is truncated 1116 * directory, or symbolic link , the inode is truncated
1117 * to zero length. the truncation is committed but the 1117 * to zero length. the truncation is committed but the
1118 * VM resources are unaffected until it is closed (see 1118 * VM resources are unaffected until it is closed (see
1119 * iput and iclose). 1119 * iput and iclose).
1120 * 1120 *
1121 * PARAMETER: 1121 * PARAMETER:
1122 * 1122 *
1123 * RETURN: 1123 * RETURN:
1124 * 1124 *
1125 * serialization: 1125 * serialization:
1126 * on entry the inode lock on each segment is assumed 1126 * on entry the inode lock on each segment is assumed
1127 * to be held. 1127 * to be held.
1128 * 1128 *
1129 * i/o error: 1129 * i/o error:
1130 */ 1130 */
@@ -1175,7 +1175,7 @@ int txCommit(tid_t tid, /* transaction identifier */
1175 if ((flag & (COMMIT_FORCE | COMMIT_SYNC)) == 0) 1175 if ((flag & (COMMIT_FORCE | COMMIT_SYNC)) == 0)
1176 tblk->xflag |= COMMIT_LAZY; 1176 tblk->xflag |= COMMIT_LAZY;
1177 /* 1177 /*
1178 * prepare non-journaled objects for commit 1178 * prepare non-journaled objects for commit
1179 * 1179 *
1180 * flush data pages of non-journaled file 1180 * flush data pages of non-journaled file
1181 * to prevent the file getting non-initialized disk blocks 1181 * to prevent the file getting non-initialized disk blocks
@@ -1186,7 +1186,7 @@ int txCommit(tid_t tid, /* transaction identifier */
1186 cd.nip = nip; 1186 cd.nip = nip;
1187 1187
1188 /* 1188 /*
1189 * acquire transaction lock on (on-disk) inodes 1189 * acquire transaction lock on (on-disk) inodes
1190 * 1190 *
1191 * update on-disk inode from in-memory inode 1191 * update on-disk inode from in-memory inode
1192 * acquiring transaction locks for AFTER records 1192 * acquiring transaction locks for AFTER records
@@ -1262,7 +1262,7 @@ int txCommit(tid_t tid, /* transaction identifier */
1262 } 1262 }
1263 1263
1264 /* 1264 /*
1265 * write log records from transaction locks 1265 * write log records from transaction locks
1266 * 1266 *
1267 * txUpdateMap() resets XAD_NEW in XAD. 1267 * txUpdateMap() resets XAD_NEW in XAD.
1268 */ 1268 */
@@ -1294,7 +1294,7 @@ int txCommit(tid_t tid, /* transaction identifier */
1294 !test_cflag(COMMIT_Nolink, tblk->u.ip))); 1294 !test_cflag(COMMIT_Nolink, tblk->u.ip)));
1295 1295
1296 /* 1296 /*
1297 * write COMMIT log record 1297 * write COMMIT log record
1298 */ 1298 */
1299 lrd->type = cpu_to_le16(LOG_COMMIT); 1299 lrd->type = cpu_to_le16(LOG_COMMIT);
1300 lrd->length = 0; 1300 lrd->length = 0;
@@ -1303,7 +1303,7 @@ int txCommit(tid_t tid, /* transaction identifier */
1303 lmGroupCommit(log, tblk); 1303 lmGroupCommit(log, tblk);
1304 1304
1305 /* 1305 /*
1306 * - transaction is now committed - 1306 * - transaction is now committed -
1307 */ 1307 */
1308 1308
1309 /* 1309 /*
@@ -1314,11 +1314,11 @@ int txCommit(tid_t tid, /* transaction identifier */
1314 txForce(tblk); 1314 txForce(tblk);
1315 1315
1316 /* 1316 /*
1317 * update allocation map. 1317 * update allocation map.
1318 * 1318 *
1319 * update inode allocation map and inode: 1319 * update inode allocation map and inode:
1320 * free pager lock on memory object of inode if any. 1320 * free pager lock on memory object of inode if any.
1321 * update block allocation map. 1321 * update block allocation map.
1322 * 1322 *
1323 * txUpdateMap() resets XAD_NEW in XAD. 1323 * txUpdateMap() resets XAD_NEW in XAD.
1324 */ 1324 */
@@ -1326,7 +1326,7 @@ int txCommit(tid_t tid, /* transaction identifier */
1326 txUpdateMap(tblk); 1326 txUpdateMap(tblk);
1327 1327
1328 /* 1328 /*
1329 * free transaction locks and pageout/free pages 1329 * free transaction locks and pageout/free pages
1330 */ 1330 */
1331 txRelease(tblk); 1331 txRelease(tblk);
1332 1332
@@ -1335,7 +1335,7 @@ int txCommit(tid_t tid, /* transaction identifier */
1335 1335
1336 1336
1337 /* 1337 /*
1338 * reset in-memory object state 1338 * reset in-memory object state
1339 */ 1339 */
1340 for (k = 0; k < cd.nip; k++) { 1340 for (k = 0; k < cd.nip; k++) {
1341 ip = cd.iplist[k]; 1341 ip = cd.iplist[k];
@@ -1358,11 +1358,11 @@ int txCommit(tid_t tid, /* transaction identifier */
1358} 1358}
1359 1359
1360/* 1360/*
1361 * NAME: txLog() 1361 * NAME: txLog()
1362 * 1362 *
1363 * FUNCTION: Writes AFTER log records for all lines modified 1363 * FUNCTION: Writes AFTER log records for all lines modified
1364 * by tid for segments specified by inodes in comdata. 1364 * by tid for segments specified by inodes in comdata.
1365 * Code assumes only WRITELOCKS are recorded in lockwords. 1365 * Code assumes only WRITELOCKS are recorded in lockwords.
1366 * 1366 *
1367 * PARAMETERS: 1367 * PARAMETERS:
1368 * 1368 *
@@ -1421,12 +1421,12 @@ static int txLog(struct jfs_log * log, struct tblock * tblk, struct commit * cd)
1421} 1421}
1422 1422
1423/* 1423/*
1424 * diLog() 1424 * diLog()
1425 * 1425 *
1426 * function: log inode tlock and format maplock to update bmap; 1426 * function: log inode tlock and format maplock to update bmap;
1427 */ 1427 */
1428static int diLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd, 1428static int diLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1429 struct tlock * tlck, struct commit * cd) 1429 struct tlock * tlck, struct commit * cd)
1430{ 1430{
1431 int rc = 0; 1431 int rc = 0;
1432 struct metapage *mp; 1432 struct metapage *mp;
@@ -1442,7 +1442,7 @@ static int diLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1442 pxd = &lrd->log.redopage.pxd; 1442 pxd = &lrd->log.redopage.pxd;
1443 1443
1444 /* 1444 /*
1445 * inode after image 1445 * inode after image
1446 */ 1446 */
1447 if (tlck->type & tlckENTRY) { 1447 if (tlck->type & tlckENTRY) {
1448 /* log after-image for logredo(): */ 1448 /* log after-image for logredo(): */
@@ -1456,7 +1456,7 @@ static int diLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1456 tlck->flag |= tlckWRITEPAGE; 1456 tlck->flag |= tlckWRITEPAGE;
1457 } else if (tlck->type & tlckFREE) { 1457 } else if (tlck->type & tlckFREE) {
1458 /* 1458 /*
1459 * free inode extent 1459 * free inode extent
1460 * 1460 *
1461 * (pages of the freed inode extent have been invalidated and 1461 * (pages of the freed inode extent have been invalidated and
1462 * a maplock for free of the extent has been formatted at 1462 * a maplock for free of the extent has been formatted at
@@ -1498,7 +1498,7 @@ static int diLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1498 jfs_err("diLog: UFO type tlck:0x%p", tlck); 1498 jfs_err("diLog: UFO type tlck:0x%p", tlck);
1499#ifdef _JFS_WIP 1499#ifdef _JFS_WIP
1500 /* 1500 /*
1501 * alloc/free external EA extent 1501 * alloc/free external EA extent
1502 * 1502 *
1503 * a maplock for txUpdateMap() to update bPWMAP for alloc/free 1503 * a maplock for txUpdateMap() to update bPWMAP for alloc/free
1504 * of the extent has been formatted at txLock() time; 1504 * of the extent has been formatted at txLock() time;
@@ -1534,9 +1534,9 @@ static int diLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1534} 1534}
1535 1535
1536/* 1536/*
1537 * dataLog() 1537 * dataLog()
1538 * 1538 *
1539 * function: log data tlock 1539 * function: log data tlock
1540 */ 1540 */
1541static int dataLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd, 1541static int dataLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1542 struct tlock * tlck) 1542 struct tlock * tlck)
@@ -1580,9 +1580,9 @@ static int dataLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1580} 1580}
1581 1581
1582/* 1582/*
1583 * dtLog() 1583 * dtLog()
1584 * 1584 *
1585 * function: log dtree tlock and format maplock to update bmap; 1585 * function: log dtree tlock and format maplock to update bmap;
1586 */ 1586 */
1587static void dtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd, 1587static void dtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1588 struct tlock * tlck) 1588 struct tlock * tlck)
@@ -1603,10 +1603,10 @@ static void dtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1603 lrd->log.redopage.type |= cpu_to_le16(LOG_BTROOT); 1603 lrd->log.redopage.type |= cpu_to_le16(LOG_BTROOT);
1604 1604
1605 /* 1605 /*
1606 * page extension via relocation: entry insertion; 1606 * page extension via relocation: entry insertion;
1607 * page extension in-place: entry insertion; 1607 * page extension in-place: entry insertion;
1608 * new right page from page split, reinitialized in-line 1608 * new right page from page split, reinitialized in-line
1609 * root from root page split: entry insertion; 1609 * root from root page split: entry insertion;
1610 */ 1610 */
1611 if (tlck->type & (tlckNEW | tlckEXTEND)) { 1611 if (tlck->type & (tlckNEW | tlckEXTEND)) {
1612 /* log after-image of the new page for logredo(): 1612 /* log after-image of the new page for logredo():
@@ -1641,8 +1641,8 @@ static void dtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1641 } 1641 }
1642 1642
1643 /* 1643 /*
1644 * entry insertion/deletion, 1644 * entry insertion/deletion,
1645 * sibling page link update (old right page before split); 1645 * sibling page link update (old right page before split);
1646 */ 1646 */
1647 if (tlck->type & (tlckENTRY | tlckRELINK)) { 1647 if (tlck->type & (tlckENTRY | tlckRELINK)) {
1648 /* log after-image for logredo(): */ 1648 /* log after-image for logredo(): */
@@ -1658,11 +1658,11 @@ static void dtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1658 } 1658 }
1659 1659
1660 /* 1660 /*
1661 * page deletion: page has been invalidated 1661 * page deletion: page has been invalidated
1662 * page relocation: source extent 1662 * page relocation: source extent
1663 * 1663 *
1664 * a maplock for free of the page has been formatted 1664 * a maplock for free of the page has been formatted
1665 * at txLock() time); 1665 * at txLock() time);
1666 */ 1666 */
1667 if (tlck->type & (tlckFREE | tlckRELOCATE)) { 1667 if (tlck->type & (tlckFREE | tlckRELOCATE)) {
1668 /* log LOG_NOREDOPAGE of the deleted page for logredo() 1668 /* log LOG_NOREDOPAGE of the deleted page for logredo()
@@ -1683,9 +1683,9 @@ static void dtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1683} 1683}
1684 1684
1685/* 1685/*
1686 * xtLog() 1686 * xtLog()
1687 * 1687 *
1688 * function: log xtree tlock and format maplock to update bmap; 1688 * function: log xtree tlock and format maplock to update bmap;
1689 */ 1689 */
1690static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd, 1690static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1691 struct tlock * tlck) 1691 struct tlock * tlck)
@@ -1725,8 +1725,8 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1725 xadlock = (struct xdlistlock *) maplock; 1725 xadlock = (struct xdlistlock *) maplock;
1726 1726
1727 /* 1727 /*
1728 * entry insertion/extension; 1728 * entry insertion/extension;
1729 * sibling page link update (old right page before split); 1729 * sibling page link update (old right page before split);
1730 */ 1730 */
1731 if (tlck->type & (tlckNEW | tlckGROW | tlckRELINK)) { 1731 if (tlck->type & (tlckNEW | tlckGROW | tlckRELINK)) {
1732 /* log after-image for logredo(): 1732 /* log after-image for logredo():
@@ -1801,7 +1801,7 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1801 } 1801 }
1802 1802
1803 /* 1803 /*
1804 * page deletion: file deletion/truncation (ref. xtTruncate()) 1804 * page deletion: file deletion/truncation (ref. xtTruncate())
1805 * 1805 *
1806 * (page will be invalidated after log is written and bmap 1806 * (page will be invalidated after log is written and bmap
1807 * is updated from the page); 1807 * is updated from the page);
@@ -1908,13 +1908,13 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1908 } 1908 }
1909 1909
1910 /* 1910 /*
1911 * page/entry truncation: file truncation (ref. xtTruncate()) 1911 * page/entry truncation: file truncation (ref. xtTruncate())
1912 * 1912 *
1913 * |----------+------+------+---------------| 1913 * |----------+------+------+---------------|
1914 * | | | 1914 * | | |
1915 * | | hwm - hwm before truncation 1915 * | | hwm - hwm before truncation
1916 * | next - truncation point 1916 * | next - truncation point
1917 * lwm - lwm before truncation 1917 * lwm - lwm before truncation
1918 * header ? 1918 * header ?
1919 */ 1919 */
1920 if (tlck->type & tlckTRUNCATE) { 1920 if (tlck->type & tlckTRUNCATE) {
@@ -1937,7 +1937,7 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1937 twm = xtlck->twm.offset; 1937 twm = xtlck->twm.offset;
1938 1938
1939 /* 1939 /*
1940 * write log records 1940 * write log records
1941 */ 1941 */
1942 /* log after-image for logredo(): 1942 /* log after-image for logredo():
1943 * 1943 *
@@ -1997,7 +1997,7 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
1997 } 1997 }
1998 1998
1999 /* 1999 /*
2000 * format maplock(s) for txUpdateMap() to update bmap 2000 * format maplock(s) for txUpdateMap() to update bmap
2001 */ 2001 */
2002 maplock->index = 0; 2002 maplock->index = 0;
2003 2003
@@ -2069,9 +2069,9 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
2069} 2069}
2070 2070
2071/* 2071/*
2072 * mapLog() 2072 * mapLog()
2073 * 2073 *
2074 * function: log from maplock of freed data extents; 2074 * function: log from maplock of freed data extents;
2075 */ 2075 */
2076static void mapLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd, 2076static void mapLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
2077 struct tlock * tlck) 2077 struct tlock * tlck)
@@ -2081,7 +2081,7 @@ static void mapLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
2081 pxd_t *pxd; 2081 pxd_t *pxd;
2082 2082
2083 /* 2083 /*
2084 * page relocation: free the source page extent 2084 * page relocation: free the source page extent
2085 * 2085 *
2086 * a maplock for txUpdateMap() for free of the page 2086 * a maplock for txUpdateMap() for free of the page
2087 * has been formatted at txLock() time saving the src 2087 * has been formatted at txLock() time saving the src
@@ -2155,10 +2155,10 @@ static void mapLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
2155} 2155}
2156 2156
2157/* 2157/*
2158 * txEA() 2158 * txEA()
2159 * 2159 *
2160 * function: acquire maplock for EA/ACL extents or 2160 * function: acquire maplock for EA/ACL extents or
2161 * set COMMIT_INLINE flag; 2161 * set COMMIT_INLINE flag;
2162 */ 2162 */
2163void txEA(tid_t tid, struct inode *ip, dxd_t * oldea, dxd_t * newea) 2163void txEA(tid_t tid, struct inode *ip, dxd_t * oldea, dxd_t * newea)
2164{ 2164{
@@ -2207,10 +2207,10 @@ void txEA(tid_t tid, struct inode *ip, dxd_t * oldea, dxd_t * newea)
2207} 2207}
2208 2208
2209/* 2209/*
2210 * txForce() 2210 * txForce()
2211 * 2211 *
2212 * function: synchronously write pages locked by transaction 2212 * function: synchronously write pages locked by transaction
2213 * after txLog() but before txUpdateMap(); 2213 * after txLog() but before txUpdateMap();
2214 */ 2214 */
2215static void txForce(struct tblock * tblk) 2215static void txForce(struct tblock * tblk)
2216{ 2216{
@@ -2273,10 +2273,10 @@ static void txForce(struct tblock * tblk)
2273} 2273}
2274 2274
2275/* 2275/*
2276 * txUpdateMap() 2276 * txUpdateMap()
2277 * 2277 *
2278 * function: update persistent allocation map (and working map 2278 * function: update persistent allocation map (and working map
2279 * if appropriate); 2279 * if appropriate);
2280 * 2280 *
2281 * parameter: 2281 * parameter:
2282 */ 2282 */
@@ -2298,7 +2298,7 @@ static void txUpdateMap(struct tblock * tblk)
2298 2298
2299 2299
2300 /* 2300 /*
2301 * update block allocation map 2301 * update block allocation map
2302 * 2302 *
2303 * update allocation state in pmap (and wmap) and 2303 * update allocation state in pmap (and wmap) and
2304 * update lsn of the pmap page; 2304 * update lsn of the pmap page;
@@ -2382,7 +2382,7 @@ static void txUpdateMap(struct tblock * tblk)
2382 } 2382 }
2383 } 2383 }
2384 /* 2384 /*
2385 * update inode allocation map 2385 * update inode allocation map
2386 * 2386 *
2387 * update allocation state in pmap and 2387 * update allocation state in pmap and
2388 * update lsn of the pmap page; 2388 * update lsn of the pmap page;
@@ -2407,24 +2407,24 @@ static void txUpdateMap(struct tblock * tblk)
2407} 2407}
2408 2408
2409/* 2409/*
2410 * txAllocPMap() 2410 * txAllocPMap()
2411 * 2411 *
2412 * function: allocate from persistent map; 2412 * function: allocate from persistent map;
2413 * 2413 *
2414 * parameter: 2414 * parameter:
2415 * ipbmap - 2415 * ipbmap -
2416 * malock - 2416 * malock -
2417 * xad list: 2417 * xad list:
2418 * pxd: 2418 * pxd:
2419 * 2419 *
2420 * maptype - 2420 * maptype -
2421 * allocate from persistent map; 2421 * allocate from persistent map;
2422 * free from persistent map; 2422 * free from persistent map;
2423 * (e.g., tmp file - free from working map at releae 2423 * (e.g., tmp file - free from working map at releae
2424 * of last reference); 2424 * of last reference);
2425 * free from persistent and working map; 2425 * free from persistent and working map;
2426 * 2426 *
2427 * lsn - log sequence number; 2427 * lsn - log sequence number;
2428 */ 2428 */
2429static void txAllocPMap(struct inode *ip, struct maplock * maplock, 2429static void txAllocPMap(struct inode *ip, struct maplock * maplock,
2430 struct tblock * tblk) 2430 struct tblock * tblk)
@@ -2478,9 +2478,9 @@ static void txAllocPMap(struct inode *ip, struct maplock * maplock,
2478} 2478}
2479 2479
2480/* 2480/*
2481 * txFreeMap() 2481 * txFreeMap()
2482 * 2482 *
2483 * function: free from persistent and/or working map; 2483 * function: free from persistent and/or working map;
2484 * 2484 *
2485 * todo: optimization 2485 * todo: optimization
2486 */ 2486 */
@@ -2579,9 +2579,9 @@ void txFreeMap(struct inode *ip,
2579} 2579}
2580 2580
2581/* 2581/*
2582 * txFreelock() 2582 * txFreelock()
2583 * 2583 *
2584 * function: remove tlock from inode anonymous locklist 2584 * function: remove tlock from inode anonymous locklist
2585 */ 2585 */
2586void txFreelock(struct inode *ip) 2586void txFreelock(struct inode *ip)
2587{ 2587{
@@ -2619,7 +2619,7 @@ void txFreelock(struct inode *ip)
2619} 2619}
2620 2620
2621/* 2621/*
2622 * txAbort() 2622 * txAbort()
2623 * 2623 *
2624 * function: abort tx before commit; 2624 * function: abort tx before commit;
2625 * 2625 *
@@ -2679,7 +2679,7 @@ void txAbort(tid_t tid, int dirty)
2679} 2679}
2680 2680
2681/* 2681/*
2682 * txLazyCommit(void) 2682 * txLazyCommit(void)
2683 * 2683 *
2684 * All transactions except those changing ipimap (COMMIT_FORCE) are 2684 * All transactions except those changing ipimap (COMMIT_FORCE) are
2685 * processed by this routine. This insures that the inode and block 2685 * processed by this routine. This insures that the inode and block
@@ -2728,7 +2728,7 @@ static void txLazyCommit(struct tblock * tblk)
2728} 2728}
2729 2729
2730/* 2730/*
2731 * jfs_lazycommit(void) 2731 * jfs_lazycommit(void)
2732 * 2732 *
2733 * To be run as a kernel daemon. If lbmIODone is called in an interrupt 2733 * To be run as a kernel daemon. If lbmIODone is called in an interrupt
2734 * context, or where blocking is not wanted, this routine will process 2734 * context, or where blocking is not wanted, this routine will process
@@ -2913,7 +2913,7 @@ void txResume(struct super_block *sb)
2913} 2913}
2914 2914
2915/* 2915/*
2916 * jfs_sync(void) 2916 * jfs_sync(void)
2917 * 2917 *
2918 * To be run as a kernel daemon. This is awakened when tlocks run low. 2918 * To be run as a kernel daemon. This is awakened when tlocks run low.
2919 * We write any inodes that have anonymous tlocks so they will become 2919 * We write any inodes that have anonymous tlocks so they will become
diff --git a/fs/jfs/jfs_txnmgr.h b/fs/jfs/jfs_txnmgr.h
index 7863cf21afca..ab7288937019 100644
--- a/fs/jfs/jfs_txnmgr.h
+++ b/fs/jfs/jfs_txnmgr.h
@@ -94,7 +94,7 @@ extern struct tblock *TxBlock; /* transaction block table */
94 */ 94 */
95struct tlock { 95struct tlock {
96 lid_t next; /* 2: index next lockword on tid locklist 96 lid_t next; /* 2: index next lockword on tid locklist
97 * next lockword on freelist 97 * next lockword on freelist
98 */ 98 */
99 tid_t tid; /* 2: transaction id holding lock */ 99 tid_t tid; /* 2: transaction id holding lock */
100 100
diff --git a/fs/jfs/jfs_types.h b/fs/jfs/jfs_types.h
index 09b252958687..649f9817accd 100644
--- a/fs/jfs/jfs_types.h
+++ b/fs/jfs/jfs_types.h
@@ -21,7 +21,7 @@
21/* 21/*
22 * jfs_types.h: 22 * jfs_types.h:
23 * 23 *
24 * basic type/utility definitions 24 * basic type/utility definitions
25 * 25 *
26 * note: this header file must be the 1st include file 26 * note: this header file must be the 1st include file
27 * of JFS include list in all JFS .c file. 27 * of JFS include list in all JFS .c file.
@@ -54,8 +54,8 @@ struct timestruc_t {
54 */ 54 */
55 55
56#define LEFTMOSTONE 0x80000000 56#define LEFTMOSTONE 0x80000000
57#define HIGHORDER 0x80000000u /* high order bit on */ 57#define HIGHORDER 0x80000000u /* high order bit on */
58#define ONES 0xffffffffu /* all bit on */ 58#define ONES 0xffffffffu /* all bit on */
59 59
60/* 60/*
61 * logical xd (lxd) 61 * logical xd (lxd)
@@ -148,7 +148,7 @@ typedef struct {
148#define sizeDXD(dxd) le32_to_cpu((dxd)->size) 148#define sizeDXD(dxd) le32_to_cpu((dxd)->size)
149 149
150/* 150/*
151 * directory entry argument 151 * directory entry argument
152 */ 152 */
153struct component_name { 153struct component_name {
154 int namlen; 154 int namlen;
@@ -160,14 +160,14 @@ struct component_name {
160 * DASD limit information - stored in directory inode 160 * DASD limit information - stored in directory inode
161 */ 161 */
162struct dasd { 162struct dasd {
163 u8 thresh; /* Alert Threshold (in percent) */ 163 u8 thresh; /* Alert Threshold (in percent) */
164 u8 delta; /* Alert Threshold delta (in percent) */ 164 u8 delta; /* Alert Threshold delta (in percent) */
165 u8 rsrvd1; 165 u8 rsrvd1;
166 u8 limit_hi; /* DASD limit (in logical blocks) */ 166 u8 limit_hi; /* DASD limit (in logical blocks) */
167 __le32 limit_lo; /* DASD limit (in logical blocks) */ 167 __le32 limit_lo; /* DASD limit (in logical blocks) */
168 u8 rsrvd2[3]; 168 u8 rsrvd2[3];
169 u8 used_hi; /* DASD usage (in logical blocks) */ 169 u8 used_hi; /* DASD usage (in logical blocks) */
170 __le32 used_lo; /* DASD usage (in logical blocks) */ 170 __le32 used_lo; /* DASD usage (in logical blocks) */
171}; 171};
172 172
173#define DASDLIMIT(dasdp) \ 173#define DASDLIMIT(dasdp) \
diff --git a/fs/jfs/jfs_umount.c b/fs/jfs/jfs_umount.c
index a386f48c73fc..7971f37534a3 100644
--- a/fs/jfs/jfs_umount.c
+++ b/fs/jfs/jfs_umount.c
@@ -60,7 +60,7 @@ int jfs_umount(struct super_block *sb)
60 jfs_info("UnMount JFS: sb:0x%p", sb); 60 jfs_info("UnMount JFS: sb:0x%p", sb);
61 61
62 /* 62 /*
63 * update superblock and close log 63 * update superblock and close log
64 * 64 *
65 * if mounted read-write and log based recovery was enabled 65 * if mounted read-write and log based recovery was enabled
66 */ 66 */
diff --git a/fs/jfs/jfs_xtree.c b/fs/jfs/jfs_xtree.c
index acc97c46d8a4..1543906a2e0d 100644
--- a/fs/jfs/jfs_xtree.c
+++ b/fs/jfs/jfs_xtree.c
@@ -16,7 +16,7 @@
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */ 17 */
18/* 18/*
19 * jfs_xtree.c: extent allocation descriptor B+-tree manager 19 * jfs_xtree.c: extent allocation descriptor B+-tree manager
20 */ 20 */
21 21
22#include <linux/fs.h> 22#include <linux/fs.h>
@@ -32,30 +32,30 @@
32/* 32/*
33 * xtree local flag 33 * xtree local flag
34 */ 34 */
35#define XT_INSERT 0x00000001 35#define XT_INSERT 0x00000001
36 36
37/* 37/*
38 * xtree key/entry comparison: extent offset 38 * xtree key/entry comparison: extent offset
39 * 39 *
40 * return: 40 * return:
41 * -1: k < start of extent 41 * -1: k < start of extent
42 * 0: start_of_extent <= k <= end_of_extent 42 * 0: start_of_extent <= k <= end_of_extent
43 * 1: k > end_of_extent 43 * 1: k > end_of_extent
44 */ 44 */
45#define XT_CMP(CMP, K, X, OFFSET64)\ 45#define XT_CMP(CMP, K, X, OFFSET64)\
46{\ 46{\
47 OFFSET64 = offsetXAD(X);\ 47 OFFSET64 = offsetXAD(X);\
48 (CMP) = ((K) >= OFFSET64 + lengthXAD(X)) ? 1 :\ 48 (CMP) = ((K) >= OFFSET64 + lengthXAD(X)) ? 1 :\
49 ((K) < OFFSET64) ? -1 : 0;\ 49 ((K) < OFFSET64) ? -1 : 0;\
50} 50}
51 51
52/* write a xad entry */ 52/* write a xad entry */
53#define XT_PUTENTRY(XAD, FLAG, OFF, LEN, ADDR)\ 53#define XT_PUTENTRY(XAD, FLAG, OFF, LEN, ADDR)\
54{\ 54{\
55 (XAD)->flag = (FLAG);\ 55 (XAD)->flag = (FLAG);\
56 XADoffset((XAD), (OFF));\ 56 XADoffset((XAD), (OFF));\
57 XADlength((XAD), (LEN));\ 57 XADlength((XAD), (LEN));\
58 XADaddress((XAD), (ADDR));\ 58 XADaddress((XAD), (ADDR));\
59} 59}
60 60
61#define XT_PAGE(IP, MP) BT_PAGE(IP, MP, xtpage_t, i_xtroot) 61#define XT_PAGE(IP, MP) BT_PAGE(IP, MP, xtpage_t, i_xtroot)
@@ -76,13 +76,13 @@
76 MP = NULL;\ 76 MP = NULL;\
77 RC = -EIO;\ 77 RC = -EIO;\
78 }\ 78 }\
79 }\ 79 }\
80} 80}
81 81
82/* for consistency */ 82/* for consistency */
83#define XT_PUTPAGE(MP) BT_PUTPAGE(MP) 83#define XT_PUTPAGE(MP) BT_PUTPAGE(MP)
84 84
85#define XT_GETSEARCH(IP, LEAF, BN, MP, P, INDEX) \ 85#define XT_GETSEARCH(IP, LEAF, BN, MP, P, INDEX) \
86 BT_GETSEARCH(IP, LEAF, BN, MP, xtpage_t, P, INDEX, i_xtroot) 86 BT_GETSEARCH(IP, LEAF, BN, MP, xtpage_t, P, INDEX, i_xtroot)
87/* xtree entry parameter descriptor */ 87/* xtree entry parameter descriptor */
88struct xtsplit { 88struct xtsplit {
@@ -97,7 +97,7 @@ struct xtsplit {
97 97
98 98
99/* 99/*
100 * statistics 100 * statistics
101 */ 101 */
102#ifdef CONFIG_JFS_STATISTICS 102#ifdef CONFIG_JFS_STATISTICS
103static struct { 103static struct {
@@ -136,7 +136,7 @@ static int xtRelink(tid_t tid, struct inode *ip, xtpage_t * fp);
136#endif /* _STILL_TO_PORT */ 136#endif /* _STILL_TO_PORT */
137 137
138/* 138/*
139 * xtLookup() 139 * xtLookup()
140 * 140 *
141 * function: map a single page into a physical extent; 141 * function: map a single page into a physical extent;
142 */ 142 */
@@ -179,7 +179,7 @@ int xtLookup(struct inode *ip, s64 lstart,
179 } 179 }
180 180
181 /* 181 /*
182 * compute the physical extent covering logical extent 182 * compute the physical extent covering logical extent
183 * 183 *
184 * N.B. search may have failed (e.g., hole in sparse file), 184 * N.B. search may have failed (e.g., hole in sparse file),
185 * and returned the index of the next entry. 185 * and returned the index of the next entry.
@@ -220,27 +220,27 @@ int xtLookup(struct inode *ip, s64 lstart,
220 220
221 221
222/* 222/*
223 * xtLookupList() 223 * xtLookupList()
224 * 224 *
225 * function: map a single logical extent into a list of physical extent; 225 * function: map a single logical extent into a list of physical extent;
226 * 226 *
227 * parameter: 227 * parameter:
228 * struct inode *ip, 228 * struct inode *ip,
229 * struct lxdlist *lxdlist, lxd list (in) 229 * struct lxdlist *lxdlist, lxd list (in)
230 * struct xadlist *xadlist, xad list (in/out) 230 * struct xadlist *xadlist, xad list (in/out)
231 * int flag) 231 * int flag)
232 * 232 *
233 * coverage of lxd by xad under assumption of 233 * coverage of lxd by xad under assumption of
234 * . lxd's are ordered and disjoint. 234 * . lxd's are ordered and disjoint.
235 * . xad's are ordered and disjoint. 235 * . xad's are ordered and disjoint.
236 * 236 *
237 * return: 237 * return:
238 * 0: success 238 * 0: success
239 * 239 *
240 * note: a page being written (even a single byte) is backed fully, 240 * note: a page being written (even a single byte) is backed fully,
241 * except the last page which is only backed with blocks 241 * except the last page which is only backed with blocks
242 * required to cover the last byte; 242 * required to cover the last byte;
243 * the extent backing a page is fully contained within an xad; 243 * the extent backing a page is fully contained within an xad;
244 */ 244 */
245int xtLookupList(struct inode *ip, struct lxdlist * lxdlist, 245int xtLookupList(struct inode *ip, struct lxdlist * lxdlist,
246 struct xadlist * xadlist, int flag) 246 struct xadlist * xadlist, int flag)
@@ -284,7 +284,7 @@ int xtLookupList(struct inode *ip, struct lxdlist * lxdlist,
284 return rc; 284 return rc;
285 285
286 /* 286 /*
287 * compute the physical extent covering logical extent 287 * compute the physical extent covering logical extent
288 * 288 *
289 * N.B. search may have failed (e.g., hole in sparse file), 289 * N.B. search may have failed (e.g., hole in sparse file),
290 * and returned the index of the next entry. 290 * and returned the index of the next entry.
@@ -343,7 +343,7 @@ int xtLookupList(struct inode *ip, struct lxdlist * lxdlist,
343 if (lstart >= size) 343 if (lstart >= size)
344 goto mapend; 344 goto mapend;
345 345
346 /* compare with the current xad */ 346 /* compare with the current xad */
347 goto compare1; 347 goto compare1;
348 } 348 }
349 /* lxd is covered by xad */ 349 /* lxd is covered by xad */
@@ -430,7 +430,7 @@ int xtLookupList(struct inode *ip, struct lxdlist * lxdlist,
430 /* 430 /*
431 * lxd is partially covered by xad 431 * lxd is partially covered by xad
432 */ 432 */
433 else { /* (xend < lend) */ 433 else { /* (xend < lend) */
434 434
435 /* 435 /*
436 * get next xad 436 * get next xad
@@ -477,22 +477,22 @@ int xtLookupList(struct inode *ip, struct lxdlist * lxdlist,
477 477
478 478
479/* 479/*
480 * xtSearch() 480 * xtSearch()
481 * 481 *
482 * function: search for the xad entry covering specified offset. 482 * function: search for the xad entry covering specified offset.
483 * 483 *
484 * parameters: 484 * parameters:
485 * ip - file object; 485 * ip - file object;
486 * xoff - extent offset; 486 * xoff - extent offset;
487 * nextp - address of next extent (if any) for search miss 487 * nextp - address of next extent (if any) for search miss
488 * cmpp - comparison result: 488 * cmpp - comparison result:
489 * btstack - traverse stack; 489 * btstack - traverse stack;
490 * flag - search process flag (XT_INSERT); 490 * flag - search process flag (XT_INSERT);
491 * 491 *
492 * returns: 492 * returns:
493 * btstack contains (bn, index) of search path traversed to the entry. 493 * btstack contains (bn, index) of search path traversed to the entry.
494 * *cmpp is set to result of comparison with the entry returned. 494 * *cmpp is set to result of comparison with the entry returned.
495 * the page containing the entry is pinned at exit. 495 * the page containing the entry is pinned at exit.
496 */ 496 */
497static int xtSearch(struct inode *ip, s64 xoff, s64 *nextp, 497static int xtSearch(struct inode *ip, s64 xoff, s64 *nextp,
498 int *cmpp, struct btstack * btstack, int flag) 498 int *cmpp, struct btstack * btstack, int flag)
@@ -517,7 +517,7 @@ static int xtSearch(struct inode *ip, s64 xoff, s64 *nextp,
517 btstack->nsplit = 0; 517 btstack->nsplit = 0;
518 518
519 /* 519 /*
520 * search down tree from root: 520 * search down tree from root:
521 * 521 *
522 * between two consecutive entries of <Ki, Pi> and <Kj, Pj> of 522 * between two consecutive entries of <Ki, Pi> and <Kj, Pj> of
523 * internal page, child page Pi contains entry with k, Ki <= K < Kj. 523 * internal page, child page Pi contains entry with k, Ki <= K < Kj.
@@ -642,7 +642,7 @@ static int xtSearch(struct inode *ip, s64 xoff, s64 *nextp,
642 XT_CMP(cmp, xoff, &p->xad[index], t64); 642 XT_CMP(cmp, xoff, &p->xad[index], t64);
643 if (cmp == 0) { 643 if (cmp == 0) {
644 /* 644 /*
645 * search hit 645 * search hit
646 */ 646 */
647 /* search hit - leaf page: 647 /* search hit - leaf page:
648 * return the entry found 648 * return the entry found
@@ -692,7 +692,7 @@ static int xtSearch(struct inode *ip, s64 xoff, s64 *nextp,
692 } 692 }
693 693
694 /* 694 /*
695 * search miss 695 * search miss
696 * 696 *
697 * base is the smallest index with key (Kj) greater than 697 * base is the smallest index with key (Kj) greater than
698 * search key (K) and may be zero or maxentry index. 698 * search key (K) and may be zero or maxentry index.
@@ -773,22 +773,22 @@ static int xtSearch(struct inode *ip, s64 xoff, s64 *nextp,
773} 773}
774 774
775/* 775/*
776 * xtInsert() 776 * xtInsert()
777 * 777 *
778 * function: 778 * function:
779 * 779 *
780 * parameter: 780 * parameter:
781 * tid - transaction id; 781 * tid - transaction id;
782 * ip - file object; 782 * ip - file object;
783 * xflag - extent flag (XAD_NOTRECORDED): 783 * xflag - extent flag (XAD_NOTRECORDED):
784 * xoff - extent offset; 784 * xoff - extent offset;
785 * xlen - extent length; 785 * xlen - extent length;
786 * xaddrp - extent address pointer (in/out): 786 * xaddrp - extent address pointer (in/out):
787 * if (*xaddrp) 787 * if (*xaddrp)
788 * caller allocated data extent at *xaddrp; 788 * caller allocated data extent at *xaddrp;
789 * else 789 * else
790 * allocate data extent and return its xaddr; 790 * allocate data extent and return its xaddr;
791 * flag - 791 * flag -
792 * 792 *
793 * return: 793 * return:
794 */ 794 */
@@ -813,7 +813,7 @@ int xtInsert(tid_t tid, /* transaction id */
813 jfs_info("xtInsert: nxoff:0x%lx nxlen:0x%x", (ulong) xoff, xlen); 813 jfs_info("xtInsert: nxoff:0x%lx nxlen:0x%x", (ulong) xoff, xlen);
814 814
815 /* 815 /*
816 * search for the entry location at which to insert: 816 * search for the entry location at which to insert:
817 * 817 *
818 * xtFastSearch() and xtSearch() both returns (leaf page 818 * xtFastSearch() and xtSearch() both returns (leaf page
819 * pinned, index at which to insert). 819 * pinned, index at which to insert).
@@ -853,13 +853,13 @@ int xtInsert(tid_t tid, /* transaction id */
853 } 853 }
854 854
855 /* 855 /*
856 * insert entry for new extent 856 * insert entry for new extent
857 */ 857 */
858 xflag |= XAD_NEW; 858 xflag |= XAD_NEW;
859 859
860 /* 860 /*
861 * if the leaf page is full, split the page and 861 * if the leaf page is full, split the page and
862 * propagate up the router entry for the new page from split 862 * propagate up the router entry for the new page from split
863 * 863 *
864 * The xtSplitUp() will insert the entry and unpin the leaf page. 864 * The xtSplitUp() will insert the entry and unpin the leaf page.
865 */ 865 */
@@ -886,7 +886,7 @@ int xtInsert(tid_t tid, /* transaction id */
886 } 886 }
887 887
888 /* 888 /*
889 * insert the new entry into the leaf page 889 * insert the new entry into the leaf page
890 */ 890 */
891 /* 891 /*
892 * acquire a transaction lock on the leaf page; 892 * acquire a transaction lock on the leaf page;
@@ -930,16 +930,16 @@ int xtInsert(tid_t tid, /* transaction id */
930 930
931 931
932/* 932/*
933 * xtSplitUp() 933 * xtSplitUp()
934 * 934 *
935 * function: 935 * function:
936 * split full pages as propagating insertion up the tree 936 * split full pages as propagating insertion up the tree
937 * 937 *
938 * parameter: 938 * parameter:
939 * tid - transaction id; 939 * tid - transaction id;
940 * ip - file object; 940 * ip - file object;
941 * split - entry parameter descriptor; 941 * split - entry parameter descriptor;
942 * btstack - traverse stack from xtSearch() 942 * btstack - traverse stack from xtSearch()
943 * 943 *
944 * return: 944 * return:
945 */ 945 */
@@ -1199,22 +1199,22 @@ xtSplitUp(tid_t tid,
1199 1199
1200 1200
1201/* 1201/*
1202 * xtSplitPage() 1202 * xtSplitPage()
1203 * 1203 *
1204 * function: 1204 * function:
1205 * split a full non-root page into 1205 * split a full non-root page into
1206 * original/split/left page and new right page 1206 * original/split/left page and new right page
1207 * i.e., the original/split page remains as left page. 1207 * i.e., the original/split page remains as left page.
1208 * 1208 *
1209 * parameter: 1209 * parameter:
1210 * int tid, 1210 * int tid,
1211 * struct inode *ip, 1211 * struct inode *ip,
1212 * struct xtsplit *split, 1212 * struct xtsplit *split,
1213 * struct metapage **rmpp, 1213 * struct metapage **rmpp,
1214 * u64 *rbnp, 1214 * u64 *rbnp,
1215 * 1215 *
1216 * return: 1216 * return:
1217 * Pointer to page in which to insert or NULL on error. 1217 * Pointer to page in which to insert or NULL on error.
1218 */ 1218 */
1219static int 1219static int
1220xtSplitPage(tid_t tid, struct inode *ip, 1220xtSplitPage(tid_t tid, struct inode *ip,
@@ -1248,9 +1248,9 @@ xtSplitPage(tid_t tid, struct inode *ip,
1248 rbn = addressPXD(pxd); 1248 rbn = addressPXD(pxd);
1249 1249
1250 /* Allocate blocks to quota. */ 1250 /* Allocate blocks to quota. */
1251 if (DQUOT_ALLOC_BLOCK(ip, lengthPXD(pxd))) { 1251 if (DQUOT_ALLOC_BLOCK(ip, lengthPXD(pxd))) {
1252 rc = -EDQUOT; 1252 rc = -EDQUOT;
1253 goto clean_up; 1253 goto clean_up;
1254 } 1254 }
1255 1255
1256 quota_allocation += lengthPXD(pxd); 1256 quota_allocation += lengthPXD(pxd);
@@ -1304,7 +1304,7 @@ xtSplitPage(tid_t tid, struct inode *ip,
1304 skip = split->index; 1304 skip = split->index;
1305 1305
1306 /* 1306 /*
1307 * sequential append at tail (after last entry of last page) 1307 * sequential append at tail (after last entry of last page)
1308 * 1308 *
1309 * if splitting the last page on a level because of appending 1309 * if splitting the last page on a level because of appending
1310 * a entry to it (skip is maxentry), it's likely that the access is 1310 * a entry to it (skip is maxentry), it's likely that the access is
@@ -1342,7 +1342,7 @@ xtSplitPage(tid_t tid, struct inode *ip,
1342 } 1342 }
1343 1343
1344 /* 1344 /*
1345 * non-sequential insert (at possibly middle page) 1345 * non-sequential insert (at possibly middle page)
1346 */ 1346 */
1347 1347
1348 /* 1348 /*
@@ -1465,25 +1465,24 @@ xtSplitPage(tid_t tid, struct inode *ip,
1465 1465
1466 1466
1467/* 1467/*
1468 * xtSplitRoot() 1468 * xtSplitRoot()
1469 * 1469 *
1470 * function: 1470 * function:
1471 * split the full root page into 1471 * split the full root page into original/root/split page and new
1472 * original/root/split page and new right page 1472 * right page
1473 * i.e., root remains fixed in tree anchor (inode) and 1473 * i.e., root remains fixed in tree anchor (inode) and the root is
1474 * the root is copied to a single new right child page 1474 * copied to a single new right child page since root page <<
1475 * since root page << non-root page, and 1475 * non-root page, and the split root page contains a single entry
1476 * the split root page contains a single entry for the 1476 * for the new right child page.
1477 * new right child page.
1478 * 1477 *
1479 * parameter: 1478 * parameter:
1480 * int tid, 1479 * int tid,
1481 * struct inode *ip, 1480 * struct inode *ip,
1482 * struct xtsplit *split, 1481 * struct xtsplit *split,
1483 * struct metapage **rmpp) 1482 * struct metapage **rmpp)
1484 * 1483 *
1485 * return: 1484 * return:
1486 * Pointer to page in which to insert or NULL on error. 1485 * Pointer to page in which to insert or NULL on error.
1487 */ 1486 */
1488static int 1487static int
1489xtSplitRoot(tid_t tid, 1488xtSplitRoot(tid_t tid,
@@ -1505,7 +1504,7 @@ xtSplitRoot(tid_t tid,
1505 INCREMENT(xtStat.split); 1504 INCREMENT(xtStat.split);
1506 1505
1507 /* 1506 /*
1508 * allocate a single (right) child page 1507 * allocate a single (right) child page
1509 */ 1508 */
1510 pxdlist = split->pxdlist; 1509 pxdlist = split->pxdlist;
1511 pxd = &pxdlist->pxd[pxdlist->npxd]; 1510 pxd = &pxdlist->pxd[pxdlist->npxd];
@@ -1573,7 +1572,7 @@ xtSplitRoot(tid_t tid,
1573 } 1572 }
1574 1573
1575 /* 1574 /*
1576 * reset the root 1575 * reset the root
1577 * 1576 *
1578 * init root with the single entry for the new right page 1577 * init root with the single entry for the new right page
1579 * set the 1st entry offset to 0, which force the left-most key 1578 * set the 1st entry offset to 0, which force the left-most key
@@ -1610,7 +1609,7 @@ xtSplitRoot(tid_t tid,
1610 1609
1611 1610
1612/* 1611/*
1613 * xtExtend() 1612 * xtExtend()
1614 * 1613 *
1615 * function: extend in-place; 1614 * function: extend in-place;
1616 * 1615 *
@@ -1677,7 +1676,7 @@ int xtExtend(tid_t tid, /* transaction id */
1677 goto extendOld; 1676 goto extendOld;
1678 1677
1679 /* 1678 /*
1680 * extent overflow: insert entry for new extent 1679 * extent overflow: insert entry for new extent
1681 */ 1680 */
1682//insertNew: 1681//insertNew:
1683 xoff = offsetXAD(xad) + MAXXLEN; 1682 xoff = offsetXAD(xad) + MAXXLEN;
@@ -1685,8 +1684,8 @@ int xtExtend(tid_t tid, /* transaction id */
1685 nextindex = le16_to_cpu(p->header.nextindex); 1684 nextindex = le16_to_cpu(p->header.nextindex);
1686 1685
1687 /* 1686 /*
1688 * if the leaf page is full, insert the new entry and 1687 * if the leaf page is full, insert the new entry and
1689 * propagate up the router entry for the new page from split 1688 * propagate up the router entry for the new page from split
1690 * 1689 *
1691 * The xtSplitUp() will insert the entry and unpin the leaf page. 1690 * The xtSplitUp() will insert the entry and unpin the leaf page.
1692 */ 1691 */
@@ -1731,7 +1730,7 @@ int xtExtend(tid_t tid, /* transaction id */
1731 } 1730 }
1732 } 1731 }
1733 /* 1732 /*
1734 * insert the new entry into the leaf page 1733 * insert the new entry into the leaf page
1735 */ 1734 */
1736 else { 1735 else {
1737 /* insert the new entry: mark the entry NEW */ 1736 /* insert the new entry: mark the entry NEW */
@@ -1771,11 +1770,11 @@ int xtExtend(tid_t tid, /* transaction id */
1771 1770
1772#ifdef _NOTYET 1771#ifdef _NOTYET
1773/* 1772/*
1774 * xtTailgate() 1773 * xtTailgate()
1775 * 1774 *
1776 * function: split existing 'tail' extent 1775 * function: split existing 'tail' extent
1777 * (split offset >= start offset of tail extent), and 1776 * (split offset >= start offset of tail extent), and
1778 * relocate and extend the split tail half; 1777 * relocate and extend the split tail half;
1779 * 1778 *
1780 * note: existing extent may or may not have been committed. 1779 * note: existing extent may or may not have been committed.
1781 * caller is responsible for pager buffer cache update, and 1780 * caller is responsible for pager buffer cache update, and
@@ -1804,7 +1803,7 @@ int xtTailgate(tid_t tid, /* transaction id */
1804 1803
1805/* 1804/*
1806printf("xtTailgate: nxoff:0x%lx nxlen:0x%x nxaddr:0x%lx\n", 1805printf("xtTailgate: nxoff:0x%lx nxlen:0x%x nxaddr:0x%lx\n",
1807 (ulong)xoff, xlen, (ulong)xaddr); 1806 (ulong)xoff, xlen, (ulong)xaddr);
1808*/ 1807*/
1809 1808
1810 /* there must exist extent to be tailgated */ 1809 /* there must exist extent to be tailgated */
@@ -1842,18 +1841,18 @@ printf("xtTailgate: nxoff:0x%lx nxlen:0x%x nxaddr:0x%lx\n",
1842 xad = &p->xad[index]; 1841 xad = &p->xad[index];
1843/* 1842/*
1844printf("xtTailgate: xoff:0x%lx xlen:0x%x xaddr:0x%lx\n", 1843printf("xtTailgate: xoff:0x%lx xlen:0x%x xaddr:0x%lx\n",
1845 (ulong)offsetXAD(xad), lengthXAD(xad), (ulong)addressXAD(xad)); 1844 (ulong)offsetXAD(xad), lengthXAD(xad), (ulong)addressXAD(xad));
1846*/ 1845*/
1847 if ((llen = xoff - offsetXAD(xad)) == 0) 1846 if ((llen = xoff - offsetXAD(xad)) == 0)
1848 goto updateOld; 1847 goto updateOld;
1849 1848
1850 /* 1849 /*
1851 * partially replace extent: insert entry for new extent 1850 * partially replace extent: insert entry for new extent
1852 */ 1851 */
1853//insertNew: 1852//insertNew:
1854 /* 1853 /*
1855 * if the leaf page is full, insert the new entry and 1854 * if the leaf page is full, insert the new entry and
1856 * propagate up the router entry for the new page from split 1855 * propagate up the router entry for the new page from split
1857 * 1856 *
1858 * The xtSplitUp() will insert the entry and unpin the leaf page. 1857 * The xtSplitUp() will insert the entry and unpin the leaf page.
1859 */ 1858 */
@@ -1898,7 +1897,7 @@ printf("xtTailgate: xoff:0x%lx xlen:0x%x xaddr:0x%lx\n",
1898 } 1897 }
1899 } 1898 }
1900 /* 1899 /*
1901 * insert the new entry into the leaf page 1900 * insert the new entry into the leaf page
1902 */ 1901 */
1903 else { 1902 else {
1904 /* insert the new entry: mark the entry NEW */ 1903 /* insert the new entry: mark the entry NEW */
@@ -1955,17 +1954,17 @@ printf("xtTailgate: xoff:0x%lx xlen:0x%x xaddr:0x%lx\n",
1955#endif /* _NOTYET */ 1954#endif /* _NOTYET */
1956 1955
1957/* 1956/*
1958 * xtUpdate() 1957 * xtUpdate()
1959 * 1958 *
1960 * function: update XAD; 1959 * function: update XAD;
1961 * 1960 *
1962 * update extent for allocated_but_not_recorded or 1961 * update extent for allocated_but_not_recorded or
1963 * compressed extent; 1962 * compressed extent;
1964 * 1963 *
1965 * parameter: 1964 * parameter:
1966 * nxad - new XAD; 1965 * nxad - new XAD;
1967 * logical extent of the specified XAD must be completely 1966 * logical extent of the specified XAD must be completely
1968 * contained by an existing XAD; 1967 * contained by an existing XAD;
1969 */ 1968 */
1970int xtUpdate(tid_t tid, struct inode *ip, xad_t * nxad) 1969int xtUpdate(tid_t tid, struct inode *ip, xad_t * nxad)
1971{ /* new XAD */ 1970{ /* new XAD */
@@ -2416,19 +2415,19 @@ printf("xtUpdate.updateLeft.split p:0x%p\n", p);
2416 2415
2417 2416
2418/* 2417/*
2419 * xtAppend() 2418 * xtAppend()
2420 * 2419 *
2421 * function: grow in append mode from contiguous region specified ; 2420 * function: grow in append mode from contiguous region specified ;
2422 * 2421 *
2423 * parameter: 2422 * parameter:
2424 * tid - transaction id; 2423 * tid - transaction id;
2425 * ip - file object; 2424 * ip - file object;
2426 * xflag - extent flag: 2425 * xflag - extent flag:
2427 * xoff - extent offset; 2426 * xoff - extent offset;
2428 * maxblocks - max extent length; 2427 * maxblocks - max extent length;
2429 * xlen - extent length (in/out); 2428 * xlen - extent length (in/out);
2430 * xaddrp - extent address pointer (in/out): 2429 * xaddrp - extent address pointer (in/out):
2431 * flag - 2430 * flag -
2432 * 2431 *
2433 * return: 2432 * return:
2434 */ 2433 */
@@ -2460,7 +2459,7 @@ int xtAppend(tid_t tid, /* transaction id */
2460 (ulong) xoff, maxblocks, xlen, (ulong) xaddr); 2459 (ulong) xoff, maxblocks, xlen, (ulong) xaddr);
2461 2460
2462 /* 2461 /*
2463 * search for the entry location at which to insert: 2462 * search for the entry location at which to insert:
2464 * 2463 *
2465 * xtFastSearch() and xtSearch() both returns (leaf page 2464 * xtFastSearch() and xtSearch() both returns (leaf page
2466 * pinned, index at which to insert). 2465 * pinned, index at which to insert).
@@ -2482,13 +2481,13 @@ int xtAppend(tid_t tid, /* transaction id */
2482 xlen = min(xlen, (int)(next - xoff)); 2481 xlen = min(xlen, (int)(next - xoff));
2483//insert: 2482//insert:
2484 /* 2483 /*
2485 * insert entry for new extent 2484 * insert entry for new extent
2486 */ 2485 */
2487 xflag |= XAD_NEW; 2486 xflag |= XAD_NEW;
2488 2487
2489 /* 2488 /*
2490 * if the leaf page is full, split the page and 2489 * if the leaf page is full, split the page and
2491 * propagate up the router entry for the new page from split 2490 * propagate up the router entry for the new page from split
2492 * 2491 *
2493 * The xtSplitUp() will insert the entry and unpin the leaf page. 2492 * The xtSplitUp() will insert the entry and unpin the leaf page.
2494 */ 2493 */
@@ -2545,7 +2544,7 @@ int xtAppend(tid_t tid, /* transaction id */
2545 return 0; 2544 return 0;
2546 2545
2547 /* 2546 /*
2548 * insert the new entry into the leaf page 2547 * insert the new entry into the leaf page
2549 */ 2548 */
2550 insertLeaf: 2549 insertLeaf:
2551 /* 2550 /*
@@ -2589,17 +2588,17 @@ int xtAppend(tid_t tid, /* transaction id */
2589 2588
2590/* - TBD for defragmentaion/reorganization - 2589/* - TBD for defragmentaion/reorganization -
2591 * 2590 *
2592 * xtDelete() 2591 * xtDelete()
2593 * 2592 *
2594 * function: 2593 * function:
2595 * delete the entry with the specified key. 2594 * delete the entry with the specified key.
2596 * 2595 *
2597 * N.B.: whole extent of the entry is assumed to be deleted. 2596 * N.B.: whole extent of the entry is assumed to be deleted.
2598 * 2597 *
2599 * parameter: 2598 * parameter:
2600 * 2599 *
2601 * return: 2600 * return:
2602 * ENOENT: if the entry is not found. 2601 * ENOENT: if the entry is not found.
2603 * 2602 *
2604 * exception: 2603 * exception:
2605 */ 2604 */
@@ -2665,10 +2664,10 @@ int xtDelete(tid_t tid, struct inode *ip, s64 xoff, s32 xlen, int flag)
2665 2664
2666/* - TBD for defragmentaion/reorganization - 2665/* - TBD for defragmentaion/reorganization -
2667 * 2666 *
2668 * xtDeleteUp() 2667 * xtDeleteUp()
2669 * 2668 *
2670 * function: 2669 * function:
2671 * free empty pages as propagating deletion up the tree 2670 * free empty pages as propagating deletion up the tree
2672 * 2671 *
2673 * parameter: 2672 * parameter:
2674 * 2673 *
@@ -2815,15 +2814,15 @@ xtDeleteUp(tid_t tid, struct inode *ip,
2815 2814
2816 2815
2817/* 2816/*
2818 * NAME: xtRelocate() 2817 * NAME: xtRelocate()
2819 * 2818 *
2820 * FUNCTION: relocate xtpage or data extent of regular file; 2819 * FUNCTION: relocate xtpage or data extent of regular file;
2821 * This function is mainly used by defragfs utility. 2820 * This function is mainly used by defragfs utility.
2822 * 2821 *
2823 * NOTE: This routine does not have the logic to handle 2822 * NOTE: This routine does not have the logic to handle
2824 * uncommitted allocated extent. The caller should call 2823 * uncommitted allocated extent. The caller should call
2825 * txCommit() to commit all the allocation before call 2824 * txCommit() to commit all the allocation before call
2826 * this routine. 2825 * this routine.
2827 */ 2826 */
2828int 2827int
2829xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */ 2828xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
@@ -2865,8 +2864,8 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
2865 xtype, (ulong) xoff, xlen, (ulong) oxaddr, (ulong) nxaddr); 2864 xtype, (ulong) xoff, xlen, (ulong) oxaddr, (ulong) nxaddr);
2866 2865
2867 /* 2866 /*
2868 * 1. get and validate the parent xtpage/xad entry 2867 * 1. get and validate the parent xtpage/xad entry
2869 * covering the source extent to be relocated; 2868 * covering the source extent to be relocated;
2870 */ 2869 */
2871 if (xtype == DATAEXT) { 2870 if (xtype == DATAEXT) {
2872 /* search in leaf entry */ 2871 /* search in leaf entry */
@@ -2910,7 +2909,7 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
2910 jfs_info("xtRelocate: parent xad entry validated."); 2909 jfs_info("xtRelocate: parent xad entry validated.");
2911 2910
2912 /* 2911 /*
2913 * 2. relocate the extent 2912 * 2. relocate the extent
2914 */ 2913 */
2915 if (xtype == DATAEXT) { 2914 if (xtype == DATAEXT) {
2916 /* if the extent is allocated-but-not-recorded 2915 /* if the extent is allocated-but-not-recorded
@@ -2923,7 +2922,7 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
2923 XT_PUTPAGE(pmp); 2922 XT_PUTPAGE(pmp);
2924 2923
2925 /* 2924 /*
2926 * cmRelocate() 2925 * cmRelocate()
2927 * 2926 *
2928 * copy target data pages to be relocated; 2927 * copy target data pages to be relocated;
2929 * 2928 *
@@ -2945,8 +2944,8 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
2945 pno = offset >> CM_L2BSIZE; 2944 pno = offset >> CM_L2BSIZE;
2946 npages = (nbytes + (CM_BSIZE - 1)) >> CM_L2BSIZE; 2945 npages = (nbytes + (CM_BSIZE - 1)) >> CM_L2BSIZE;
2947/* 2946/*
2948 npages = ((offset + nbytes - 1) >> CM_L2BSIZE) - 2947 npages = ((offset + nbytes - 1) >> CM_L2BSIZE) -
2949 (offset >> CM_L2BSIZE) + 1; 2948 (offset >> CM_L2BSIZE) + 1;
2950*/ 2949*/
2951 sxaddr = oxaddr; 2950 sxaddr = oxaddr;
2952 dxaddr = nxaddr; 2951 dxaddr = nxaddr;
@@ -2981,7 +2980,7 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
2981 2980
2982 XT_GETSEARCH(ip, btstack.top, bn, pmp, pp, index); 2981 XT_GETSEARCH(ip, btstack.top, bn, pmp, pp, index);
2983 jfs_info("xtRelocate: target data extent relocated."); 2982 jfs_info("xtRelocate: target data extent relocated.");
2984 } else { /* (xtype == XTPAGE) */ 2983 } else { /* (xtype == XTPAGE) */
2985 2984
2986 /* 2985 /*
2987 * read in the target xtpage from the source extent; 2986 * read in the target xtpage from the source extent;
@@ -3026,16 +3025,14 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
3026 */ 3025 */
3027 if (lmp) { 3026 if (lmp) {
3028 BT_MARK_DIRTY(lmp, ip); 3027 BT_MARK_DIRTY(lmp, ip);
3029 tlck = 3028 tlck = txLock(tid, ip, lmp, tlckXTREE | tlckRELINK);
3030 txLock(tid, ip, lmp, tlckXTREE | tlckRELINK);
3031 lp->header.next = cpu_to_le64(nxaddr); 3029 lp->header.next = cpu_to_le64(nxaddr);
3032 XT_PUTPAGE(lmp); 3030 XT_PUTPAGE(lmp);
3033 } 3031 }
3034 3032
3035 if (rmp) { 3033 if (rmp) {
3036 BT_MARK_DIRTY(rmp, ip); 3034 BT_MARK_DIRTY(rmp, ip);
3037 tlck = 3035 tlck = txLock(tid, ip, rmp, tlckXTREE | tlckRELINK);
3038 txLock(tid, ip, rmp, tlckXTREE | tlckRELINK);
3039 rp->header.prev = cpu_to_le64(nxaddr); 3036 rp->header.prev = cpu_to_le64(nxaddr);
3040 XT_PUTPAGE(rmp); 3037 XT_PUTPAGE(rmp);
3041 } 3038 }
@@ -3062,7 +3059,7 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
3062 * scan may be skipped by commit() and logredo(); 3059 * scan may be skipped by commit() and logredo();
3063 */ 3060 */
3064 BT_MARK_DIRTY(mp, ip); 3061 BT_MARK_DIRTY(mp, ip);
3065 /* tlckNEW init xtlck->lwm.offset = XTENTRYSTART; */ 3062 /* tlckNEW init xtlck->lwm.offset = XTENTRYSTART; */
3066 tlck = txLock(tid, ip, mp, tlckXTREE | tlckNEW); 3063 tlck = txLock(tid, ip, mp, tlckXTREE | tlckNEW);
3067 xtlck = (struct xtlock *) & tlck->lock; 3064 xtlck = (struct xtlock *) & tlck->lock;
3068 3065
@@ -3084,7 +3081,7 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
3084 } 3081 }
3085 3082
3086 /* 3083 /*
3087 * 3. acquire maplock for the source extent to be freed; 3084 * 3. acquire maplock for the source extent to be freed;
3088 * 3085 *
3089 * acquire a maplock saving the src relocated extent address; 3086 * acquire a maplock saving the src relocated extent address;
3090 * to free of the extent at commit time; 3087 * to free of the extent at commit time;
@@ -3105,7 +3102,7 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
3105 * is no buffer associated with this lock since the buffer 3102 * is no buffer associated with this lock since the buffer
3106 * has been redirected to the target location. 3103 * has been redirected to the target location.
3107 */ 3104 */
3108 else /* (xtype == XTPAGE) */ 3105 else /* (xtype == XTPAGE) */
3109 tlck = txMaplock(tid, ip, tlckMAP | tlckRELOCATE); 3106 tlck = txMaplock(tid, ip, tlckMAP | tlckRELOCATE);
3110 3107
3111 pxdlock = (struct pxd_lock *) & tlck->lock; 3108 pxdlock = (struct pxd_lock *) & tlck->lock;
@@ -3115,7 +3112,7 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
3115 pxdlock->index = 1; 3112 pxdlock->index = 1;
3116 3113
3117 /* 3114 /*
3118 * 4. update the parent xad entry for relocation; 3115 * 4. update the parent xad entry for relocation;
3119 * 3116 *
3120 * acquire tlck for the parent entry with XAD_NEW as entry 3117 * acquire tlck for the parent entry with XAD_NEW as entry
3121 * update which will write LOG_REDOPAGE and update bmap for 3118 * update which will write LOG_REDOPAGE and update bmap for
@@ -3143,22 +3140,22 @@ xtRelocate(tid_t tid, struct inode * ip, xad_t * oxad, /* old XAD */
3143 3140
3144 3141
3145/* 3142/*
3146 * xtSearchNode() 3143 * xtSearchNode()
3147 * 3144 *
3148 * function: search for the internal xad entry covering specified extent. 3145 * function: search for the internal xad entry covering specified extent.
3149 * This function is mainly used by defragfs utility. 3146 * This function is mainly used by defragfs utility.
3150 * 3147 *
3151 * parameters: 3148 * parameters:
3152 * ip - file object; 3149 * ip - file object;
3153 * xad - extent to find; 3150 * xad - extent to find;
3154 * cmpp - comparison result: 3151 * cmpp - comparison result:
3155 * btstack - traverse stack; 3152 * btstack - traverse stack;
3156 * flag - search process flag; 3153 * flag - search process flag;
3157 * 3154 *
3158 * returns: 3155 * returns:
3159 * btstack contains (bn, index) of search path traversed to the entry. 3156 * btstack contains (bn, index) of search path traversed to the entry.
3160 * *cmpp is set to result of comparison with the entry returned. 3157 * *cmpp is set to result of comparison with the entry returned.
3161 * the page containing the entry is pinned at exit. 3158 * the page containing the entry is pinned at exit.
3162 */ 3159 */
3163static int xtSearchNode(struct inode *ip, xad_t * xad, /* required XAD entry */ 3160static int xtSearchNode(struct inode *ip, xad_t * xad, /* required XAD entry */
3164 int *cmpp, struct btstack * btstack, int flag) 3161 int *cmpp, struct btstack * btstack, int flag)
@@ -3181,7 +3178,7 @@ static int xtSearchNode(struct inode *ip, xad_t * xad, /* required XAD entry */
3181 xaddr = addressXAD(xad); 3178 xaddr = addressXAD(xad);
3182 3179
3183 /* 3180 /*
3184 * search down tree from root: 3181 * search down tree from root:
3185 * 3182 *
3186 * between two consecutive entries of <Ki, Pi> and <Kj, Pj> of 3183 * between two consecutive entries of <Ki, Pi> and <Kj, Pj> of
3187 * internal page, child page Pi contains entry with k, Ki <= K < Kj. 3184 * internal page, child page Pi contains entry with k, Ki <= K < Kj.
@@ -3217,7 +3214,7 @@ static int xtSearchNode(struct inode *ip, xad_t * xad, /* required XAD entry */
3217 XT_CMP(cmp, xoff, &p->xad[index], t64); 3214 XT_CMP(cmp, xoff, &p->xad[index], t64);
3218 if (cmp == 0) { 3215 if (cmp == 0) {
3219 /* 3216 /*
3220 * search hit 3217 * search hit
3221 * 3218 *
3222 * verify for exact match; 3219 * verify for exact match;
3223 */ 3220 */
@@ -3245,7 +3242,7 @@ static int xtSearchNode(struct inode *ip, xad_t * xad, /* required XAD entry */
3245 } 3242 }
3246 3243
3247 /* 3244 /*
3248 * search miss - non-leaf page: 3245 * search miss - non-leaf page:
3249 * 3246 *
3250 * base is the smallest index with key (Kj) greater than 3247 * base is the smallest index with key (Kj) greater than
3251 * search key (K) and may be zero or maxentry index. 3248 * search key (K) and may be zero or maxentry index.
@@ -3268,15 +3265,15 @@ static int xtSearchNode(struct inode *ip, xad_t * xad, /* required XAD entry */
3268 3265
3269 3266
3270/* 3267/*
3271 * xtRelink() 3268 * xtRelink()
3272 * 3269 *
3273 * function: 3270 * function:
3274 * link around a freed page. 3271 * link around a freed page.
3275 * 3272 *
3276 * Parameter: 3273 * Parameter:
3277 * int tid, 3274 * int tid,
3278 * struct inode *ip, 3275 * struct inode *ip,
3279 * xtpage_t *p) 3276 * xtpage_t *p)
3280 * 3277 *
3281 * returns: 3278 * returns:
3282 */ 3279 */
@@ -3338,7 +3335,7 @@ static int xtRelink(tid_t tid, struct inode *ip, xtpage_t * p)
3338 3335
3339 3336
3340/* 3337/*
3341 * xtInitRoot() 3338 * xtInitRoot()
3342 * 3339 *
3343 * initialize file root (inline in inode) 3340 * initialize file root (inline in inode)
3344 */ 3341 */
@@ -3385,42 +3382,42 @@ void xtInitRoot(tid_t tid, struct inode *ip)
3385#define MAX_TRUNCATE_LEAVES 50 3382#define MAX_TRUNCATE_LEAVES 50
3386 3383
3387/* 3384/*
3388 * xtTruncate() 3385 * xtTruncate()
3389 * 3386 *
3390 * function: 3387 * function:
3391 * traverse for truncation logging backward bottom up; 3388 * traverse for truncation logging backward bottom up;
3392 * terminate at the last extent entry at the current subtree 3389 * terminate at the last extent entry at the current subtree
3393 * root page covering new down size. 3390 * root page covering new down size.
3394 * truncation may occur within the last extent entry. 3391 * truncation may occur within the last extent entry.
3395 * 3392 *
3396 * parameter: 3393 * parameter:
3397 * int tid, 3394 * int tid,
3398 * struct inode *ip, 3395 * struct inode *ip,
3399 * s64 newsize, 3396 * s64 newsize,
3400 * int type) {PWMAP, PMAP, WMAP; DELETE, TRUNCATE} 3397 * int type) {PWMAP, PMAP, WMAP; DELETE, TRUNCATE}
3401 * 3398 *
3402 * return: 3399 * return:
3403 * 3400 *
3404 * note: 3401 * note:
3405 * PWMAP: 3402 * PWMAP:
3406 * 1. truncate (non-COMMIT_NOLINK file) 3403 * 1. truncate (non-COMMIT_NOLINK file)
3407 * by jfs_truncate() or jfs_open(O_TRUNC): 3404 * by jfs_truncate() or jfs_open(O_TRUNC):
3408 * xtree is updated; 3405 * xtree is updated;
3409 * 2. truncate index table of directory when last entry removed 3406 * 2. truncate index table of directory when last entry removed
3410 * map update via tlock at commit time; 3407 * map update via tlock at commit time;
3411 * PMAP: 3408 * PMAP:
3412 * Call xtTruncate_pmap instead 3409 * Call xtTruncate_pmap instead
3413 * WMAP: 3410 * WMAP:
3414 * 1. remove (free zero link count) on last reference release 3411 * 1. remove (free zero link count) on last reference release
3415 * (pmap has been freed at commit zero link count); 3412 * (pmap has been freed at commit zero link count);
3416 * 2. truncate (COMMIT_NOLINK file, i.e., tmp file): 3413 * 2. truncate (COMMIT_NOLINK file, i.e., tmp file):
3417 * xtree is updated; 3414 * xtree is updated;
3418 * map update directly at truncation time; 3415 * map update directly at truncation time;
3419 * 3416 *
3420 * if (DELETE) 3417 * if (DELETE)
3421 * no LOG_NOREDOPAGE is required (NOREDOFILE is sufficient); 3418 * no LOG_NOREDOPAGE is required (NOREDOFILE is sufficient);
3422 * else if (TRUNCATE) 3419 * else if (TRUNCATE)
3423 * must write LOG_NOREDOPAGE for deleted index page; 3420 * must write LOG_NOREDOPAGE for deleted index page;
3424 * 3421 *
3425 * pages may already have been tlocked by anonymous transactions 3422 * pages may already have been tlocked by anonymous transactions
3426 * during file growth (i.e., write) before truncation; 3423 * during file growth (i.e., write) before truncation;
@@ -3493,7 +3490,7 @@ s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int flag)
3493 * retained in the new sized file. 3490 * retained in the new sized file.
3494 * if type is PMAP, the data and index pages are NOT 3491 * if type is PMAP, the data and index pages are NOT
3495 * freed, and the data and index blocks are NOT freed 3492 * freed, and the data and index blocks are NOT freed
3496 * from working map. 3493 * from working map.
3497 * (this will allow continued access of data/index of 3494 * (this will allow continued access of data/index of
3498 * temporary file (zerolink count file truncated to zero-length)). 3495 * temporary file (zerolink count file truncated to zero-length)).
3499 */ 3496 */
@@ -3542,7 +3539,7 @@ s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int flag)
3542 goto getChild; 3539 goto getChild;
3543 3540
3544 /* 3541 /*
3545 * leaf page 3542 * leaf page
3546 */ 3543 */
3547 freed = 0; 3544 freed = 0;
3548 3545
@@ -3916,7 +3913,7 @@ s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int flag)
3916 } 3913 }
3917 3914
3918 /* 3915 /*
3919 * internal page: go down to child page of current entry 3916 * internal page: go down to child page of current entry
3920 */ 3917 */
3921 getChild: 3918 getChild:
3922 /* save current parent entry for the child page */ 3919 /* save current parent entry for the child page */
@@ -3965,7 +3962,7 @@ s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int flag)
3965 3962
3966 3963
3967/* 3964/*
3968 * xtTruncate_pmap() 3965 * xtTruncate_pmap()
3969 * 3966 *
3970 * function: 3967 * function:
3971 * Perform truncate to zero lenghth for deleted file, leaving the 3968 * Perform truncate to zero lenghth for deleted file, leaving the
@@ -3974,9 +3971,9 @@ s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int flag)
3974 * is committed to disk. 3971 * is committed to disk.
3975 * 3972 *
3976 * parameter: 3973 * parameter:
3977 * tid_t tid, 3974 * tid_t tid,
3978 * struct inode *ip, 3975 * struct inode *ip,
3979 * s64 committed_size) 3976 * s64 committed_size)
3980 * 3977 *
3981 * return: new committed size 3978 * return: new committed size
3982 * 3979 *
@@ -4050,7 +4047,7 @@ s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size)
4050 } 4047 }
4051 4048
4052 /* 4049 /*
4053 * leaf page 4050 * leaf page
4054 */ 4051 */
4055 4052
4056 if (++locked_leaves > MAX_TRUNCATE_LEAVES) { 4053 if (++locked_leaves > MAX_TRUNCATE_LEAVES) {
@@ -4062,7 +4059,7 @@ s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size)
4062 xoff = offsetXAD(xad); 4059 xoff = offsetXAD(xad);
4063 xlen = lengthXAD(xad); 4060 xlen = lengthXAD(xad);
4064 XT_PUTPAGE(mp); 4061 XT_PUTPAGE(mp);
4065 return (xoff + xlen) << JFS_SBI(ip->i_sb)->l2bsize; 4062 return (xoff + xlen) << JFS_SBI(ip->i_sb)->l2bsize;
4066 } 4063 }
4067 tlck = txLock(tid, ip, mp, tlckXTREE); 4064 tlck = txLock(tid, ip, mp, tlckXTREE);
4068 tlck->type = tlckXTREE | tlckFREE; 4065 tlck->type = tlckXTREE | tlckFREE;
@@ -4099,8 +4096,7 @@ s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size)
4099 */ 4096 */
4100 tlck = txLock(tid, ip, mp, tlckXTREE); 4097 tlck = txLock(tid, ip, mp, tlckXTREE);
4101 xtlck = (struct xtlock *) & tlck->lock; 4098 xtlck = (struct xtlock *) & tlck->lock;
4102 xtlck->hwm.offset = 4099 xtlck->hwm.offset = le16_to_cpu(p->header.nextindex) - 1;
4103 le16_to_cpu(p->header.nextindex) - 1;
4104 tlck->type = tlckXTREE | tlckFREE; 4100 tlck->type = tlckXTREE | tlckFREE;
4105 4101
4106 XT_PUTPAGE(mp); 4102 XT_PUTPAGE(mp);
@@ -4118,7 +4114,7 @@ s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size)
4118 else 4114 else
4119 index--; 4115 index--;
4120 /* 4116 /*
4121 * internal page: go down to child page of current entry 4117 * internal page: go down to child page of current entry
4122 */ 4118 */
4123 getChild: 4119 getChild:
4124 /* save current parent entry for the child page */ 4120 /* save current parent entry for the child page */
diff --git a/fs/jfs/jfs_xtree.h b/fs/jfs/jfs_xtree.h
index 164f6f2b1019..70815c8a3d6a 100644
--- a/fs/jfs/jfs_xtree.h
+++ b/fs/jfs/jfs_xtree.h
@@ -19,14 +19,14 @@
19#define _H_JFS_XTREE 19#define _H_JFS_XTREE
20 20
21/* 21/*
22 * jfs_xtree.h: extent allocation descriptor B+-tree manager 22 * jfs_xtree.h: extent allocation descriptor B+-tree manager
23 */ 23 */
24 24
25#include "jfs_btree.h" 25#include "jfs_btree.h"
26 26
27 27
28/* 28/*
29 * extent allocation descriptor (xad) 29 * extent allocation descriptor (xad)
30 */ 30 */
31typedef struct xad { 31typedef struct xad {
32 unsigned flag:8; /* 1: flag */ 32 unsigned flag:8; /* 1: flag */
@@ -38,30 +38,30 @@ typedef struct xad {
38 __le32 addr2; /* 4: address in unit of fsblksize */ 38 __le32 addr2; /* 4: address in unit of fsblksize */
39} xad_t; /* (16) */ 39} xad_t; /* (16) */
40 40
41#define MAXXLEN ((1 << 24) - 1) 41#define MAXXLEN ((1 << 24) - 1)
42 42
43#define XTSLOTSIZE 16 43#define XTSLOTSIZE 16
44#define L2XTSLOTSIZE 4 44#define L2XTSLOTSIZE 4
45 45
46/* xad_t field construction */ 46/* xad_t field construction */
47#define XADoffset(xad, offset64)\ 47#define XADoffset(xad, offset64)\
48{\ 48{\
49 (xad)->off1 = ((u64)offset64) >> 32;\ 49 (xad)->off1 = ((u64)offset64) >> 32;\
50 (xad)->off2 = __cpu_to_le32((offset64) & 0xffffffff);\ 50 (xad)->off2 = __cpu_to_le32((offset64) & 0xffffffff);\
51} 51}
52#define XADaddress(xad, address64)\ 52#define XADaddress(xad, address64)\
53{\ 53{\
54 (xad)->addr1 = ((u64)address64) >> 32;\ 54 (xad)->addr1 = ((u64)address64) >> 32;\
55 (xad)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\ 55 (xad)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\
56} 56}
57#define XADlength(xad, length32) (xad)->len = __cpu_to_le24(length32) 57#define XADlength(xad, length32) (xad)->len = __cpu_to_le24(length32)
58 58
59/* xad_t field extraction */ 59/* xad_t field extraction */
60#define offsetXAD(xad)\ 60#define offsetXAD(xad)\
61 ( ((s64)((xad)->off1)) << 32 | __le32_to_cpu((xad)->off2)) 61 ( ((s64)((xad)->off1)) << 32 | __le32_to_cpu((xad)->off2))
62#define addressXAD(xad)\ 62#define addressXAD(xad)\
63 ( ((s64)((xad)->addr1)) << 32 | __le32_to_cpu((xad)->addr2)) 63 ( ((s64)((xad)->addr1)) << 32 | __le32_to_cpu((xad)->addr2))
64#define lengthXAD(xad) __le24_to_cpu((xad)->len) 64#define lengthXAD(xad) __le24_to_cpu((xad)->len)
65 65
66/* xad list */ 66/* xad list */
67struct xadlist { 67struct xadlist {
@@ -71,22 +71,22 @@ struct xadlist {
71}; 71};
72 72
73/* xad_t flags */ 73/* xad_t flags */
74#define XAD_NEW 0x01 /* new */ 74#define XAD_NEW 0x01 /* new */
75#define XAD_EXTENDED 0x02 /* extended */ 75#define XAD_EXTENDED 0x02 /* extended */
76#define XAD_COMPRESSED 0x04 /* compressed with recorded length */ 76#define XAD_COMPRESSED 0x04 /* compressed with recorded length */
77#define XAD_NOTRECORDED 0x08 /* allocated but not recorded */ 77#define XAD_NOTRECORDED 0x08 /* allocated but not recorded */
78#define XAD_COW 0x10 /* copy-on-write */ 78#define XAD_COW 0x10 /* copy-on-write */
79 79
80 80
81/* possible values for maxentry */ 81/* possible values for maxentry */
82#define XTROOTINITSLOT_DIR 6 82#define XTROOTINITSLOT_DIR 6
83#define XTROOTINITSLOT 10 83#define XTROOTINITSLOT 10
84#define XTROOTMAXSLOT 18 84#define XTROOTMAXSLOT 18
85#define XTPAGEMAXSLOT 256 85#define XTPAGEMAXSLOT 256
86#define XTENTRYSTART 2 86#define XTENTRYSTART 2
87 87
88/* 88/*
89 * xtree page: 89 * xtree page:
90 */ 90 */
91typedef union { 91typedef union {
92 struct xtheader { 92 struct xtheader {
@@ -106,7 +106,7 @@ typedef union {
106} xtpage_t; 106} xtpage_t;
107 107
108/* 108/*
109 * external declaration 109 * external declaration
110 */ 110 */
111extern int xtLookup(struct inode *ip, s64 lstart, s64 llen, 111extern int xtLookup(struct inode *ip, s64 lstart, s64 llen,
112 int *pflag, s64 * paddr, int *plen, int flag); 112 int *pflag, s64 * paddr, int *plen, int flag);
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 41c204771262..25161c4121e4 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -328,7 +328,7 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode)
328 * dentry - child directory dentry 328 * dentry - child directory dentry
329 * 329 *
330 * RETURN: -EINVAL - if name is . or .. 330 * RETURN: -EINVAL - if name is . or ..
331 * -EINVAL - if . or .. exist but are invalid. 331 * -EINVAL - if . or .. exist but are invalid.
332 * errors from subroutines 332 * errors from subroutines
333 * 333 *
334 * note: 334 * note:
@@ -517,7 +517,7 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
517 inode_dec_link_count(ip); 517 inode_dec_link_count(ip);
518 518
519 /* 519 /*
520 * commit zero link count object 520 * commit zero link count object
521 */ 521 */
522 if (ip->i_nlink == 0) { 522 if (ip->i_nlink == 0) {
523 assert(!test_cflag(COMMIT_Nolink, ip)); 523 assert(!test_cflag(COMMIT_Nolink, ip));
@@ -596,7 +596,7 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
596/* 596/*
597 * NAME: commitZeroLink() 597 * NAME: commitZeroLink()
598 * 598 *
599 * FUNCTION: for non-directory, called by jfs_remove(), 599 * FUNCTION: for non-directory, called by jfs_remove(),
600 * truncate a regular file, directory or symbolic 600 * truncate a regular file, directory or symbolic
601 * link to zero length. return 0 if type is not 601 * link to zero length. return 0 if type is not
602 * one of these. 602 * one of these.
@@ -676,7 +676,7 @@ static s64 commitZeroLink(tid_t tid, struct inode *ip)
676/* 676/*
677 * NAME: jfs_free_zero_link() 677 * NAME: jfs_free_zero_link()
678 * 678 *
679 * FUNCTION: for non-directory, called by iClose(), 679 * FUNCTION: for non-directory, called by iClose(),
680 * free resources of a file from cache and WORKING map 680 * free resources of a file from cache and WORKING map
681 * for a file previously committed with zero link count 681 * for a file previously committed with zero link count
682 * while associated with a pager object, 682 * while associated with a pager object,
@@ -855,12 +855,12 @@ static int jfs_link(struct dentry *old_dentry,
855 * NAME: jfs_symlink(dip, dentry, name) 855 * NAME: jfs_symlink(dip, dentry, name)
856 * 856 *
857 * FUNCTION: creates a symbolic link to <symlink> by name <name> 857 * FUNCTION: creates a symbolic link to <symlink> by name <name>
858 * in directory <dip> 858 * in directory <dip>
859 * 859 *
860 * PARAMETER: dip - parent directory vnode 860 * PARAMETER: dip - parent directory vnode
861 * dentry - dentry of symbolic link 861 * dentry - dentry of symbolic link
862 * name - the path name of the existing object 862 * name - the path name of the existing object
863 * that will be the source of the link 863 * that will be the source of the link
864 * 864 *
865 * RETURN: errors from subroutines 865 * RETURN: errors from subroutines
866 * 866 *
@@ -1052,9 +1052,9 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
1052 1052
1053 1053
1054/* 1054/*
1055 * NAME: jfs_rename 1055 * NAME: jfs_rename
1056 * 1056 *
1057 * FUNCTION: rename a file or directory 1057 * FUNCTION: rename a file or directory
1058 */ 1058 */
1059static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry, 1059static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
1060 struct inode *new_dir, struct dentry *new_dentry) 1060 struct inode *new_dir, struct dentry *new_dentry)
@@ -1331,9 +1331,9 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
1331 1331
1332 1332
1333/* 1333/*
1334 * NAME: jfs_mknod 1334 * NAME: jfs_mknod
1335 * 1335 *
1336 * FUNCTION: Create a special file (device) 1336 * FUNCTION: Create a special file (device)
1337 */ 1337 */
1338static int jfs_mknod(struct inode *dir, struct dentry *dentry, 1338static int jfs_mknod(struct inode *dir, struct dentry *dentry,
1339 int mode, dev_t rdev) 1339 int mode, dev_t rdev)
diff --git a/fs/jfs/resize.c b/fs/jfs/resize.c
index 79d625f3f733..71984ee95346 100644
--- a/fs/jfs/resize.c
+++ b/fs/jfs/resize.c
@@ -29,17 +29,17 @@
29#include "jfs_txnmgr.h" 29#include "jfs_txnmgr.h"
30#include "jfs_debug.h" 30#include "jfs_debug.h"
31 31
32#define BITSPERPAGE (PSIZE << 3) 32#define BITSPERPAGE (PSIZE << 3)
33#define L2MEGABYTE 20 33#define L2MEGABYTE 20
34#define MEGABYTE (1 << L2MEGABYTE) 34#define MEGABYTE (1 << L2MEGABYTE)
35#define MEGABYTE32 (MEGABYTE << 5) 35#define MEGABYTE32 (MEGABYTE << 5)
36 36
37/* convert block number to bmap file page number */ 37/* convert block number to bmap file page number */
38#define BLKTODMAPN(b)\ 38#define BLKTODMAPN(b)\
39 (((b) >> 13) + ((b) >> 23) + ((b) >> 33) + 3 + 1) 39 (((b) >> 13) + ((b) >> 23) + ((b) >> 33) + 3 + 1)
40 40
41/* 41/*
42 * jfs_extendfs() 42 * jfs_extendfs()
43 * 43 *
44 * function: extend file system; 44 * function: extend file system;
45 * 45 *
@@ -48,9 +48,9 @@
48 * workspace space 48 * workspace space
49 * 49 *
50 * input: 50 * input:
51 * new LVSize: in LV blocks (required) 51 * new LVSize: in LV blocks (required)
52 * new LogSize: in LV blocks (optional) 52 * new LogSize: in LV blocks (optional)
53 * new FSSize: in LV blocks (optional) 53 * new FSSize: in LV blocks (optional)
54 * 54 *
55 * new configuration: 55 * new configuration:
56 * 1. set new LogSize as specified or default from new LVSize; 56 * 1. set new LogSize as specified or default from new LVSize;
@@ -125,8 +125,8 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
125 } 125 }
126 126
127 /* 127 /*
128 * reconfigure LV spaces 128 * reconfigure LV spaces
129 * --------------------- 129 * ---------------------
130 * 130 *
131 * validate new size, or, if not specified, determine new size 131 * validate new size, or, if not specified, determine new size
132 */ 132 */
@@ -198,7 +198,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
198 log_formatted = 1; 198 log_formatted = 1;
199 } 199 }
200 /* 200 /*
201 * quiesce file system 201 * quiesce file system
202 * 202 *
203 * (prepare to move the inline log and to prevent map update) 203 * (prepare to move the inline log and to prevent map update)
204 * 204 *
@@ -270,8 +270,8 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
270 } 270 }
271 271
272 /* 272 /*
273 * extend block allocation map 273 * extend block allocation map
274 * --------------------------- 274 * ---------------------------
275 * 275 *
276 * extendfs() for new extension, retry after crash recovery; 276 * extendfs() for new extension, retry after crash recovery;
277 * 277 *
@@ -283,7 +283,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
283 * s_size: aggregate size in physical blocks; 283 * s_size: aggregate size in physical blocks;
284 */ 284 */
285 /* 285 /*
286 * compute the new block allocation map configuration 286 * compute the new block allocation map configuration
287 * 287 *
288 * map dinode: 288 * map dinode:
289 * di_size: map file size in byte; 289 * di_size: map file size in byte;
@@ -301,7 +301,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
301 newNpages = BLKTODMAPN(t64) + 1; 301 newNpages = BLKTODMAPN(t64) + 1;
302 302
303 /* 303 /*
304 * extend map from current map (WITHOUT growing mapfile) 304 * extend map from current map (WITHOUT growing mapfile)
305 * 305 *
306 * map new extension with unmapped part of the last partial 306 * map new extension with unmapped part of the last partial
307 * dmap page, if applicable, and extra page(s) allocated 307 * dmap page, if applicable, and extra page(s) allocated
@@ -341,8 +341,8 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
341 XSize -= nblocks; 341 XSize -= nblocks;
342 342
343 /* 343 /*
344 * grow map file to cover remaining extension 344 * grow map file to cover remaining extension
345 * and/or one extra dmap page for next extendfs(); 345 * and/or one extra dmap page for next extendfs();
346 * 346 *
347 * allocate new map pages and its backing blocks, and 347 * allocate new map pages and its backing blocks, and
348 * update map file xtree 348 * update map file xtree
@@ -422,8 +422,8 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
422 dbFinalizeBmap(ipbmap); 422 dbFinalizeBmap(ipbmap);
423 423
424 /* 424 /*
425 * update inode allocation map 425 * update inode allocation map
426 * --------------------------- 426 * ---------------------------
427 * 427 *
428 * move iag lists from old to new iag; 428 * move iag lists from old to new iag;
429 * agstart field is not updated for logredo() to reconstruct 429 * agstart field is not updated for logredo() to reconstruct
@@ -442,8 +442,8 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
442 } 442 }
443 443
444 /* 444 /*
445 * finalize 445 * finalize
446 * -------- 446 * --------
447 * 447 *
448 * extension is committed when on-disk super block is 448 * extension is committed when on-disk super block is
449 * updated with new descriptors: logredo will recover 449 * updated with new descriptors: logredo will recover
@@ -480,7 +480,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
480 diFreeSpecial(ipbmap2); 480 diFreeSpecial(ipbmap2);
481 481
482 /* 482 /*
483 * update superblock 483 * update superblock
484 */ 484 */
485 if ((rc = readSuper(sb, &bh))) 485 if ((rc = readSuper(sb, &bh)))
486 goto error_out; 486 goto error_out;
@@ -530,7 +530,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
530 530
531 resume: 531 resume:
532 /* 532 /*
533 * resume file system transactions 533 * resume file system transactions
534 */ 534 */
535 txResume(sb); 535 txResume(sb);
536 536
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index b753ba216450..5c0f2de01316 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -63,9 +63,9 @@
63 * 63 *
64 * On-disk: 64 * On-disk:
65 * 65 *
66 * FEALISTs are stored on disk using blocks allocated by dbAlloc() and 66 * FEALISTs are stored on disk using blocks allocated by dbAlloc() and
67 * written directly. An EA list may be in-lined in the inode if there is 67 * written directly. An EA list may be in-lined in the inode if there is
68 * sufficient room available. 68 * sufficient room available.
69 */ 69 */
70 70
71struct ea_buffer { 71struct ea_buffer {
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-20 02:35:44 -0400