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-rw-r--r--fs/ext3/inode.c239
1 files changed, 114 insertions, 125 deletions
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 0cd126176bbb..e68587a7f366 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -44,16 +44,16 @@ static int ext3_writepage_trans_blocks(struct inode *inode);
44/* 44/*
45 * Test whether an inode is a fast symlink. 45 * Test whether an inode is a fast symlink.
46 */ 46 */
47static inline int ext3_inode_is_fast_symlink(struct inode *inode) 47static int ext3_inode_is_fast_symlink(struct inode *inode)
48{ 48{
49 int ea_blocks = EXT3_I(inode)->i_file_acl ? 49 int ea_blocks = EXT3_I(inode)->i_file_acl ?
50 (inode->i_sb->s_blocksize >> 9) : 0; 50 (inode->i_sb->s_blocksize >> 9) : 0;
51 51
52 return (S_ISLNK(inode->i_mode) && 52 return (S_ISLNK(inode->i_mode) && inode->i_blocks - ea_blocks == 0);
53 inode->i_blocks - ea_blocks == 0);
54} 53}
55 54
56/* The ext3 forget function must perform a revoke if we are freeing data 55/*
56 * The ext3 forget function must perform a revoke if we are freeing data
57 * which has been journaled. Metadata (eg. indirect blocks) must be 57 * which has been journaled. Metadata (eg. indirect blocks) must be
58 * revoked in all cases. 58 * revoked in all cases.
59 * 59 *
@@ -61,10 +61,8 @@ static inline int ext3_inode_is_fast_symlink(struct inode *inode)
61 * but there may still be a record of it in the journal, and that record 61 * but there may still be a record of it in the journal, and that record
62 * still needs to be revoked. 62 * still needs to be revoked.
63 */ 63 */
64 64int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode,
65int ext3_forget(handle_t *handle, int is_metadata, 65 struct buffer_head *bh, int blocknr)
66 struct inode *inode, struct buffer_head *bh,
67 int blocknr)
68{ 66{
69 int err; 67 int err;
70 68
@@ -104,10 +102,9 @@ int ext3_forget(handle_t *handle, int is_metadata,
104} 102}
105 103
106/* 104/*
107 * Work out how many blocks we need to progress with the next chunk of a 105 * Work out how many blocks we need to proceed with the next chunk of a
108 * truncate transaction. 106 * truncate transaction.
109 */ 107 */
110
111static unsigned long blocks_for_truncate(struct inode *inode) 108static unsigned long blocks_for_truncate(struct inode *inode)
112{ 109{
113 unsigned long needed; 110 unsigned long needed;
@@ -141,7 +138,6 @@ static unsigned long blocks_for_truncate(struct inode *inode)
141 * extend fails, we need to propagate the failure up and restart the 138 * extend fails, we need to propagate the failure up and restart the
142 * transaction in the top-level truncate loop. --sct 139 * transaction in the top-level truncate loop. --sct
143 */ 140 */
144
145static handle_t *start_transaction(struct inode *inode) 141static handle_t *start_transaction(struct inode *inode)
146{ 142{
147 handle_t *result; 143 handle_t *result;
@@ -194,9 +190,11 @@ void ext3_delete_inode (struct inode * inode)
194 190
195 handle = start_transaction(inode); 191 handle = start_transaction(inode);
196 if (IS_ERR(handle)) { 192 if (IS_ERR(handle)) {
197 /* If we're going to skip the normal cleanup, we still 193 /*
198 * need to make sure that the in-core orphan linked list 194 * If we're going to skip the normal cleanup, we still need to
199 * is properly cleaned up. */ 195 * make sure that the in-core orphan linked list is properly
196 * cleaned up.
197 */
200 ext3_orphan_del(NULL, inode); 198 ext3_orphan_del(NULL, inode);
201 goto no_delete; 199 goto no_delete;
202 } 200 }
@@ -247,7 +245,7 @@ static inline void add_chain(Indirect *p, struct buffer_head *bh, __le32 *v)
247 p->bh = bh; 245 p->bh = bh;
248} 246}
249 247
250static inline int verify_chain(Indirect *from, Indirect *to) 248static int verify_chain(Indirect *from, Indirect *to)
251{ 249{
252 while (from <= to && from->key == *from->p) 250 while (from <= to && from->key == *from->p)
253 from++; 251 from++;
@@ -317,7 +315,7 @@ static int ext3_block_to_path(struct inode *inode,
317 offsets[n++] = i_block & (ptrs - 1); 315 offsets[n++] = i_block & (ptrs - 1);
318 final = ptrs; 316 final = ptrs;
319 } else { 317 } else {
320 ext3_warning (inode->i_sb, "ext3_block_to_path", "block > big"); 318 ext3_warning(inode->i_sb, "ext3_block_to_path", "block > big");
321 } 319 }
322 if (boundary) 320 if (boundary)
323 *boundary = final - 1 - (i_block & (ptrs - 1)); 321 *boundary = final - 1 - (i_block & (ptrs - 1));
@@ -409,7 +407,6 @@ no_block:
409 * 407 *
410 * Caller must make sure that @ind is valid and will stay that way. 408 * Caller must make sure that @ind is valid and will stay that way.
411 */ 409 */
412
413static unsigned long ext3_find_near(struct inode *inode, Indirect *ind) 410static unsigned long ext3_find_near(struct inode *inode, Indirect *ind)
414{ 411{
415 struct ext3_inode_info *ei = EXT3_I(inode); 412 struct ext3_inode_info *ei = EXT3_I(inode);
@@ -419,17 +416,18 @@ static unsigned long ext3_find_near(struct inode *inode, Indirect *ind)
419 unsigned long colour; 416 unsigned long colour;
420 417
421 /* Try to find previous block */ 418 /* Try to find previous block */
422 for (p = ind->p - 1; p >= start; p--) 419 for (p = ind->p - 1; p >= start; p--) {
423 if (*p) 420 if (*p)
424 return le32_to_cpu(*p); 421 return le32_to_cpu(*p);
422 }
425 423
426 /* No such thing, so let's try location of indirect block */ 424 /* No such thing, so let's try location of indirect block */
427 if (ind->bh) 425 if (ind->bh)
428 return ind->bh->b_blocknr; 426 return ind->bh->b_blocknr;
429 427
430 /* 428 /*
431 * It is going to be refered from inode itself? OK, just put it into 429 * It is going to be referred to from the inode itself? OK, just put it
432 * the same cylinder group then. 430 * into the same cylinder group then.
433 */ 431 */
434 bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) + 432 bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
435 le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block); 433 le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
@@ -453,7 +451,9 @@ static unsigned long ext3_find_near(struct inode *inode, Indirect *ind)
453static unsigned long ext3_find_goal(struct inode *inode, long block, 451static unsigned long ext3_find_goal(struct inode *inode, long block,
454 Indirect chain[4], Indirect *partial) 452 Indirect chain[4], Indirect *partial)
455{ 453{
456 struct ext3_block_alloc_info *block_i = EXT3_I(inode)->i_block_alloc_info; 454 struct ext3_block_alloc_info *block_i;
455
456 block_i = EXT3_I(inode)->i_block_alloc_info;
457 457
458 /* 458 /*
459 * try the heuristic for sequential allocation, 459 * try the heuristic for sequential allocation,
@@ -466,6 +466,7 @@ static unsigned long ext3_find_goal(struct inode *inode, long block,
466 466
467 return ext3_find_near(inode, partial); 467 return ext3_find_near(inode, partial);
468} 468}
469
469/** 470/**
470 * ext3_blks_to_allocate: Look up the block map and count the number 471 * ext3_blks_to_allocate: Look up the block map and count the number
471 * of direct blocks need to be allocated for the given branch. 472 * of direct blocks need to be allocated for the given branch.
@@ -478,8 +479,7 @@ static unsigned long ext3_find_goal(struct inode *inode, long block,
478 * return the total number of blocks to be allocate, including the 479 * return the total number of blocks to be allocate, including the
479 * direct and indirect blocks. 480 * direct and indirect blocks.
480 */ 481 */
481static int 482static int ext3_blks_to_allocate(Indirect *branch, int k, unsigned long blks,
482ext3_blks_to_allocate(Indirect * branch, int k, unsigned long blks,
483 int blocks_to_boundary) 483 int blocks_to_boundary)
484{ 484{
485 unsigned long count = 0; 485 unsigned long count = 0;
@@ -489,7 +489,7 @@ ext3_blks_to_allocate(Indirect * branch, int k, unsigned long blks,
489 * then it's clear blocks on that path have not allocated 489 * then it's clear blocks on that path have not allocated
490 */ 490 */
491 if (k > 0) { 491 if (k > 0) {
492 /* right now don't hanel cross boundary allocation */ 492 /* right now we don't handle cross boundary allocation */
493 if (blks < blocks_to_boundary + 1) 493 if (blks < blocks_to_boundary + 1)
494 count += blks; 494 count += blks;
495 else 495 else
@@ -538,7 +538,7 @@ static int ext3_alloc_blocks(handle_t *handle, struct inode *inode,
538 while (1) { 538 while (1) {
539 count = target; 539 count = target;
540 /* allocating blocks for indirect blocks and direct blocks */ 540 /* allocating blocks for indirect blocks and direct blocks */
541 current_block = ext3_new_blocks(handle, inode, goal, &count, err); 541 current_block = ext3_new_blocks(handle,inode,goal,&count,err);
542 if (*err) 542 if (*err)
543 goto failed_out; 543 goto failed_out;
544 544
@@ -591,7 +591,6 @@ failed_out:
591 * ext3_alloc_block() (normally -ENOSPC). Otherwise we set the chain 591 * ext3_alloc_block() (normally -ENOSPC). Otherwise we set the chain
592 * as described above and return 0. 592 * as described above and return 0.
593 */ 593 */
594
595static int ext3_alloc_branch(handle_t *handle, struct inode *inode, 594static int ext3_alloc_branch(handle_t *handle, struct inode *inode,
596 int indirect_blks, int *blks, unsigned long goal, 595 int indirect_blks, int *blks, unsigned long goal,
597 int *offsets, Indirect *branch) 596 int *offsets, Indirect *branch)
@@ -670,27 +669,28 @@ failed:
670} 669}
671 670
672/** 671/**
673 * ext3_splice_branch - splice the allocated branch onto inode. 672 * ext3_splice_branch - splice the allocated branch onto inode.
674 * @inode: owner 673 * @inode: owner
675 * @block: (logical) number of block we are adding 674 * @block: (logical) number of block we are adding
676 * @chain: chain of indirect blocks (with a missing link - see 675 * @chain: chain of indirect blocks (with a missing link - see
677 * ext3_alloc_branch) 676 * ext3_alloc_branch)
678 * @where: location of missing link 677 * @where: location of missing link
679 * @num: number of indirect blocks we are adding 678 * @num: number of indirect blocks we are adding
680 * @blks: number of direct blocks we are adding 679 * @blks: number of direct blocks we are adding
681 * 680 *
682 * This function fills the missing link and does all housekeeping needed in 681 * This function fills the missing link and does all housekeeping needed in
683 * inode (->i_blocks, etc.). In case of success we end up with the full 682 * inode (->i_blocks, etc.). In case of success we end up with the full
684 * chain to new block and return 0. 683 * chain to new block and return 0.
685 */ 684 */
686 685static int ext3_splice_branch(handle_t *handle, struct inode *inode,
687static int ext3_splice_branch(handle_t *handle, struct inode *inode, long block, 686 long block, Indirect *where, int num, int blks)
688 Indirect *where, int num, int blks)
689{ 687{
690 int i; 688 int i;
691 int err = 0; 689 int err = 0;
692 struct ext3_block_alloc_info *block_i = EXT3_I(inode)->i_block_alloc_info; 690 struct ext3_block_alloc_info *block_i;
693 unsigned long current_block; 691 unsigned long current_block;
692
693 block_i = EXT3_I(inode)->i_block_alloc_info;
694 /* 694 /*
695 * If we're splicing into a [td]indirect block (as opposed to the 695 * If we're splicing into a [td]indirect block (as opposed to the
696 * inode) then we need to get write access to the [td]indirect block 696 * inode) then we need to get write access to the [td]indirect block
@@ -705,8 +705,11 @@ static int ext3_splice_branch(handle_t *handle, struct inode *inode, long block,
705 /* That's it */ 705 /* That's it */
706 706
707 *where->p = where->key; 707 *where->p = where->key;
708 /* update host bufferhead or inode to point to 708
709 * more just allocated direct blocks blocks */ 709 /*
710 * Update the host buffer_head or inode to point to more just allocated
711 * direct blocks blocks
712 */
710 if (num == 0 && blks > 1) { 713 if (num == 0 && blks > 1) {
711 current_block = le32_to_cpu(where->key + 1); 714 current_block = le32_to_cpu(where->key + 1);
712 for (i = 1; i < blks; i++) 715 for (i = 1; i < blks; i++)
@@ -720,7 +723,8 @@ static int ext3_splice_branch(handle_t *handle, struct inode *inode, long block,
720 */ 723 */
721 if (block_i) { 724 if (block_i) {
722 block_i->last_alloc_logical_block = block + blks - 1; 725 block_i->last_alloc_logical_block = block + blks - 1;
723 block_i->last_alloc_physical_block = le32_to_cpu(where[num].key + blks - 1); 726 block_i->last_alloc_physical_block =
727 le32_to_cpu(where[num].key + blks - 1);
724 } 728 }
725 729
726 /* We are done with atomic stuff, now do the rest of housekeeping */ 730 /* We are done with atomic stuff, now do the rest of housekeeping */
@@ -731,7 +735,7 @@ static int ext3_splice_branch(handle_t *handle, struct inode *inode, long block,
731 /* had we spliced it onto indirect block? */ 735 /* had we spliced it onto indirect block? */
732 if (where->bh) { 736 if (where->bh) {
733 /* 737 /*
734 * akpm: If we spliced it onto an indirect block, we haven't 738 * If we spliced it onto an indirect block, we haven't
735 * altered the inode. Note however that if it is being spliced 739 * altered the inode. Note however that if it is being spliced
736 * onto an indirect block at the very end of the file (the 740 * onto an indirect block at the very end of the file (the
737 * file is growing) then we *will* alter the inode to reflect 741 * file is growing) then we *will* alter the inode to reflect
@@ -756,7 +760,7 @@ err_out:
756 for (i = 1; i <= num; i++) { 760 for (i = 1; i <= num; i++) {
757 BUFFER_TRACE(where[i].bh, "call journal_forget"); 761 BUFFER_TRACE(where[i].bh, "call journal_forget");
758 ext3_journal_forget(handle, where[i].bh); 762 ext3_journal_forget(handle, where[i].bh);
759 ext3_free_blocks(handle, inode, le32_to_cpu(where[i-1].key), 1); 763 ext3_free_blocks(handle,inode,le32_to_cpu(where[i-1].key),1);
760 } 764 }
761 ext3_free_blocks(handle, inode, le32_to_cpu(where[num].key), blks); 765 ext3_free_blocks(handle, inode, le32_to_cpu(where[num].key), blks);
762 766
@@ -775,17 +779,16 @@ err_out:
775 * allocations is needed - we simply release blocks and do not touch anything 779 * allocations is needed - we simply release blocks and do not touch anything
776 * reachable from inode. 780 * reachable from inode.
777 * 781 *
778 * akpm: `handle' can be NULL if create == 0. 782 * `handle' can be NULL if create == 0.
779 * 783 *
780 * The BKL may not be held on entry here. Be sure to take it early. 784 * The BKL may not be held on entry here. Be sure to take it early.
781 * return > 0, # of blocks mapped or allocated. 785 * return > 0, # of blocks mapped or allocated.
782 * return = 0, if plain lookup failed. 786 * return = 0, if plain lookup failed.
783 * return < 0, error case. 787 * return < 0, error case.
784 */ 788 */
785 789int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
786int 790 sector_t iblock, unsigned long maxblocks,
787ext3_get_blocks_handle(handle_t *handle, struct inode *inode, sector_t iblock, 791 struct buffer_head *bh_result,
788 unsigned long maxblocks, struct buffer_head *bh_result,
789 int create, int extend_disksize) 792 int create, int extend_disksize)
790{ 793{
791 int err = -EIO; 794 int err = -EIO;
@@ -802,7 +805,7 @@ ext3_get_blocks_handle(handle_t *handle, struct inode *inode, sector_t iblock,
802 805
803 806
804 J_ASSERT(handle != NULL || create == 0); 807 J_ASSERT(handle != NULL || create == 0);
805 depth = ext3_block_to_path(inode, iblock, offsets, &blocks_to_boundary); 808 depth = ext3_block_to_path(inode,iblock,offsets,&blocks_to_boundary);
806 809
807 if (depth == 0) 810 if (depth == 0)
808 goto out; 811 goto out;
@@ -998,8 +1001,8 @@ static int ext3_get_block(struct inode *inode, sector_t iblock,
998/* 1001/*
999 * `handle' can be NULL if create is zero 1002 * `handle' can be NULL if create is zero
1000 */ 1003 */
1001struct buffer_head *ext3_getblk(handle_t *handle, struct inode * inode, 1004struct buffer_head *ext3_getblk(handle_t *handle, struct inode *inode,
1002 long block, int create, int * errp) 1005 long block, int create, int *errp)
1003{ 1006{
1004 struct buffer_head dummy; 1007 struct buffer_head dummy;
1005 int fatal = 0, err; 1008 int fatal = 0, err;
@@ -1029,17 +1032,18 @@ struct buffer_head *ext3_getblk(handle_t *handle, struct inode * inode,
1029 J_ASSERT(create != 0); 1032 J_ASSERT(create != 0);
1030 J_ASSERT(handle != 0); 1033 J_ASSERT(handle != 0);
1031 1034
1032 /* Now that we do not always journal data, we 1035 /*
1033 should keep in mind whether this should 1036 * Now that we do not always journal data, we should
1034 always journal the new buffer as metadata. 1037 * keep in mind whether this should always journal the
1035 For now, regular file writes use 1038 * new buffer as metadata. For now, regular file
1036 ext3_get_block instead, so it's not a 1039 * writes use ext3_get_block instead, so it's not a
1037 problem. */ 1040 * problem.
1041 */
1038 lock_buffer(bh); 1042 lock_buffer(bh);
1039 BUFFER_TRACE(bh, "call get_create_access"); 1043 BUFFER_TRACE(bh, "call get_create_access");
1040 fatal = ext3_journal_get_create_access(handle, bh); 1044 fatal = ext3_journal_get_create_access(handle, bh);
1041 if (!fatal && !buffer_uptodate(bh)) { 1045 if (!fatal && !buffer_uptodate(bh)) {
1042 memset(bh->b_data, 0, inode->i_sb->s_blocksize); 1046 memset(bh->b_data,0,inode->i_sb->s_blocksize);
1043 set_buffer_uptodate(bh); 1047 set_buffer_uptodate(bh);
1044 } 1048 }
1045 unlock_buffer(bh); 1049 unlock_buffer(bh);
@@ -1061,7 +1065,7 @@ err:
1061 return NULL; 1065 return NULL;
1062} 1066}
1063 1067
1064struct buffer_head *ext3_bread(handle_t *handle, struct inode * inode, 1068struct buffer_head *ext3_bread(handle_t *handle, struct inode *inode,
1065 int block, int create, int *err) 1069 int block, int create, int *err)
1066{ 1070{
1067 struct buffer_head * bh; 1071 struct buffer_head * bh;
@@ -1137,9 +1141,8 @@ static int walk_page_buffers( handle_t *handle,
1137 * is elevated. We'll still have enough credits for the tiny quotafile 1141 * is elevated. We'll still have enough credits for the tiny quotafile
1138 * write. 1142 * write.
1139 */ 1143 */
1140 1144static int do_journal_get_write_access(handle_t *handle,
1141static int do_journal_get_write_access(handle_t *handle, 1145 struct buffer_head *bh)
1142 struct buffer_head *bh)
1143{ 1146{
1144 if (!buffer_mapped(bh) || buffer_freed(bh)) 1147 if (!buffer_mapped(bh) || buffer_freed(bh))
1145 return 0; 1148 return 0;
@@ -1180,8 +1183,7 @@ out:
1180 return ret; 1183 return ret;
1181} 1184}
1182 1185
1183int 1186int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh)
1184ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh)
1185{ 1187{
1186 int err = journal_dirty_data(handle, bh); 1188 int err = journal_dirty_data(handle, bh);
1187 if (err) 1189 if (err)
@@ -1206,7 +1208,6 @@ static int commit_write_fn(handle_t *handle, struct buffer_head *bh)
1206 * ext3 never places buffers on inode->i_mapping->private_list. metadata 1208 * ext3 never places buffers on inode->i_mapping->private_list. metadata
1207 * buffers are managed internally. 1209 * buffers are managed internally.
1208 */ 1210 */
1209
1210static int ext3_ordered_commit_write(struct file *file, struct page *page, 1211static int ext3_ordered_commit_write(struct file *file, struct page *page,
1211 unsigned from, unsigned to) 1212 unsigned from, unsigned to)
1212{ 1213{
@@ -1416,7 +1417,7 @@ static int journal_dirty_data_fn(handle_t *handle, struct buffer_head *bh)
1416 * we don't need to open a transaction here. 1417 * we don't need to open a transaction here.
1417 */ 1418 */
1418static int ext3_ordered_writepage(struct page *page, 1419static int ext3_ordered_writepage(struct page *page,
1419 struct writeback_control *wbc) 1420 struct writeback_control *wbc)
1420{ 1421{
1421 struct inode *inode = page->mapping->host; 1422 struct inode *inode = page->mapping->host;
1422 struct buffer_head *page_bufs; 1423 struct buffer_head *page_bufs;
@@ -1907,11 +1908,8 @@ static inline int all_zeroes(__le32 *p, __le32 *q)
1907 * c) free the subtrees growing from the inode past the @chain[0]. 1908 * c) free the subtrees growing from the inode past the @chain[0].
1908 * (no partially truncated stuff there). */ 1909 * (no partially truncated stuff there). */
1909 1910
1910static Indirect *ext3_find_shared(struct inode *inode, 1911static Indirect *ext3_find_shared(struct inode *inode, int depth,
1911 int depth, 1912 int offsets[4], Indirect chain[4], __le32 *top)
1912 int offsets[4],
1913 Indirect chain[4],
1914 __le32 *top)
1915{ 1913{
1916 Indirect *partial, *p; 1914 Indirect *partial, *p;
1917 int k, err; 1915 int k, err;
@@ -1950,8 +1948,7 @@ static Indirect *ext3_find_shared(struct inode *inode,
1950 } 1948 }
1951 /* Writer: end */ 1949 /* Writer: end */
1952 1950
1953 while(partial > p) 1951 while(partial > p) {
1954 {
1955 brelse(partial->bh); 1952 brelse(partial->bh);
1956 partial--; 1953 partial--;
1957 } 1954 }
@@ -1967,10 +1964,9 @@ no_top:
1967 * We release `count' blocks on disk, but (last - first) may be greater 1964 * We release `count' blocks on disk, but (last - first) may be greater
1968 * than `count' because there can be holes in there. 1965 * than `count' because there can be holes in there.
1969 */ 1966 */
1970static void 1967static void ext3_clear_blocks(handle_t *handle, struct inode *inode,
1971ext3_clear_blocks(handle_t *handle, struct inode *inode, struct buffer_head *bh, 1968 struct buffer_head *bh, unsigned long block_to_free,
1972 unsigned long block_to_free, unsigned long count, 1969 unsigned long count, __le32 *first, __le32 *last)
1973 __le32 *first, __le32 *last)
1974{ 1970{
1975 __le32 *p; 1971 __le32 *p;
1976 if (try_to_extend_transaction(handle, inode)) { 1972 if (try_to_extend_transaction(handle, inode)) {
@@ -2231,8 +2227,7 @@ static void ext3_free_branches(handle_t *handle, struct inode *inode,
2231 * that's fine - as long as they are linked from the inode, the post-crash 2227 * that's fine - as long as they are linked from the inode, the post-crash
2232 * ext3_truncate() run will find them and release them. 2228 * ext3_truncate() run will find them and release them.
2233 */ 2229 */
2234 2230void ext3_truncate(struct inode *inode)
2235void ext3_truncate(struct inode * inode)
2236{ 2231{
2237 handle_t *handle; 2232 handle_t *handle;
2238 struct ext3_inode_info *ei = EXT3_I(inode); 2233 struct ext3_inode_info *ei = EXT3_I(inode);
@@ -2356,29 +2351,26 @@ void ext3_truncate(struct inode * inode)
2356do_indirects: 2351do_indirects:
2357 /* Kill the remaining (whole) subtrees */ 2352 /* Kill the remaining (whole) subtrees */
2358 switch (offsets[0]) { 2353 switch (offsets[0]) {
2359 default: 2354 default:
2360 nr = i_data[EXT3_IND_BLOCK]; 2355 nr = i_data[EXT3_IND_BLOCK];
2361 if (nr) { 2356 if (nr) {
2362 ext3_free_branches(handle, inode, NULL, 2357 ext3_free_branches(handle, inode, NULL, &nr, &nr+1, 1);
2363 &nr, &nr+1, 1); 2358 i_data[EXT3_IND_BLOCK] = 0;
2364 i_data[EXT3_IND_BLOCK] = 0; 2359 }
2365 } 2360 case EXT3_IND_BLOCK:
2366 case EXT3_IND_BLOCK: 2361 nr = i_data[EXT3_DIND_BLOCK];
2367 nr = i_data[EXT3_DIND_BLOCK]; 2362 if (nr) {
2368 if (nr) { 2363 ext3_free_branches(handle, inode, NULL, &nr, &nr+1, 2);
2369 ext3_free_branches(handle, inode, NULL, 2364 i_data[EXT3_DIND_BLOCK] = 0;
2370 &nr, &nr+1, 2); 2365 }
2371 i_data[EXT3_DIND_BLOCK] = 0; 2366 case EXT3_DIND_BLOCK:
2372 } 2367 nr = i_data[EXT3_TIND_BLOCK];
2373 case EXT3_DIND_BLOCK: 2368 if (nr) {
2374 nr = i_data[EXT3_TIND_BLOCK]; 2369 ext3_free_branches(handle, inode, NULL, &nr, &nr+1, 3);
2375 if (nr) { 2370 i_data[EXT3_TIND_BLOCK] = 0;
2376 ext3_free_branches(handle, inode, NULL, 2371 }
2377 &nr, &nr+1, 3); 2372 case EXT3_TIND_BLOCK:
2378 i_data[EXT3_TIND_BLOCK] = 0; 2373 ;
2379 }
2380 case EXT3_TIND_BLOCK:
2381 ;
2382 } 2374 }
2383 2375
2384 ext3_discard_reservation(inode); 2376 ext3_discard_reservation(inode);
@@ -2387,8 +2379,10 @@ do_indirects:
2387 inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 2379 inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
2388 ext3_mark_inode_dirty(handle, inode); 2380 ext3_mark_inode_dirty(handle, inode);
2389 2381
2390 /* In a multi-transaction truncate, we only make the final 2382 /*
2391 * transaction synchronous */ 2383 * In a multi-transaction truncate, we only make the final transaction
2384 * synchronous
2385 */
2392 if (IS_SYNC(inode)) 2386 if (IS_SYNC(inode))
2393 handle->h_sync = 1; 2387 handle->h_sync = 1;
2394out_stop: 2388out_stop:
@@ -2414,20 +2408,16 @@ static unsigned long ext3_get_inode_block(struct super_block *sb,
2414 struct ext3_group_desc * gdp; 2408 struct ext3_group_desc * gdp;
2415 2409
2416 2410
2417 if ((ino != EXT3_ROOT_INO && 2411 if ((ino != EXT3_ROOT_INO && ino != EXT3_JOURNAL_INO &&
2418 ino != EXT3_JOURNAL_INO && 2412 ino != EXT3_RESIZE_INO && ino < EXT3_FIRST_INO(sb)) ||
2419 ino != EXT3_RESIZE_INO && 2413 ino > le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)) {
2420 ino < EXT3_FIRST_INO(sb)) || 2414 ext3_error(sb, "ext3_get_inode_block",
2421 ino > le32_to_cpu(
2422 EXT3_SB(sb)->s_es->s_inodes_count)) {
2423 ext3_error (sb, "ext3_get_inode_block",
2424 "bad inode number: %lu", ino); 2415 "bad inode number: %lu", ino);
2425 return 0; 2416 return 0;
2426 } 2417 }
2427 block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb); 2418 block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
2428 if (block_group >= EXT3_SB(sb)->s_groups_count) { 2419 if (block_group >= EXT3_SB(sb)->s_groups_count) {
2429 ext3_error (sb, "ext3_get_inode_block", 2420 ext3_error(sb,"ext3_get_inode_block","group >= groups count");
2430 "group >= groups count");
2431 return 0; 2421 return 0;
2432 } 2422 }
2433 smp_rmb(); 2423 smp_rmb();
@@ -2440,7 +2430,7 @@ static unsigned long ext3_get_inode_block(struct super_block *sb,
2440 return 0; 2430 return 0;
2441 } 2431 }
2442 2432
2443 gdp = (struct ext3_group_desc *) bh->b_data; 2433 gdp = (struct ext3_group_desc *)bh->b_data;
2444 /* 2434 /*
2445 * Figure out the offset within the block group inode table 2435 * Figure out the offset within the block group inode table
2446 */ 2436 */
@@ -2989,7 +2979,7 @@ err_out:
2989 2979
2990 2980
2991/* 2981/*
2992 * akpm: how many blocks doth make a writepage()? 2982 * How many blocks doth make a writepage()?
2993 * 2983 *
2994 * With N blocks per page, it may be: 2984 * With N blocks per page, it may be:
2995 * N data blocks 2985 * N data blocks
@@ -3079,8 +3069,8 @@ ext3_reserve_inode_write(handle_t *handle, struct inode *inode,
3079} 3069}
3080 3070
3081/* 3071/*
3082 * akpm: What we do here is to mark the in-core inode as clean 3072 * What we do here is to mark the in-core inode as clean with respect to inode
3083 * with respect to inode dirtiness (it may still be data-dirty). 3073 * dirtiness (it may still be data-dirty).
3084 * This means that the in-core inode may be reaped by prune_icache 3074 * This means that the in-core inode may be reaped by prune_icache
3085 * without having to perform any I/O. This is a very good thing, 3075 * without having to perform any I/O. This is a very good thing,
3086 * because *any* task may call prune_icache - even ones which 3076 * because *any* task may call prune_icache - even ones which
@@ -3112,7 +3102,7 @@ int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode)
3112} 3102}
3113 3103
3114/* 3104/*
3115 * akpm: ext3_dirty_inode() is called from __mark_inode_dirty() 3105 * ext3_dirty_inode() is called from __mark_inode_dirty()
3116 * 3106 *
3117 * We're really interested in the case where a file is being extended. 3107 * We're really interested in the case where a file is being extended.
3118 * i_size has been changed by generic_commit_write() and we thus need 3108 * i_size has been changed by generic_commit_write() and we thus need
@@ -3148,7 +3138,7 @@ out:
3148 return; 3138 return;
3149} 3139}
3150 3140
3151#ifdef AKPM 3141#if 0
3152/* 3142/*
3153 * Bind an inode's backing buffer_head into this transaction, to prevent 3143 * Bind an inode's backing buffer_head into this transaction, to prevent
3154 * it from being flushed to disk early. Unlike 3144 * it from being flushed to disk early. Unlike
@@ -3156,8 +3146,7 @@ out:
3156 * returns no iloc structure, so the caller needs to repeat the iloc 3146 * returns no iloc structure, so the caller needs to repeat the iloc
3157 * lookup to mark the inode dirty later. 3147 * lookup to mark the inode dirty later.
3158 */ 3148 */
3159static inline int 3149static int ext3_pin_inode(handle_t *handle, struct inode *inode)
3160ext3_pin_inode(handle_t *handle, struct inode *inode)
3161{ 3150{
3162 struct ext3_iloc iloc; 3151 struct ext3_iloc iloc;
3163 3152