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Diffstat (limited to 'fs/jfs/jfs_imap.h')
-rw-r--r--fs/jfs/jfs_imap.h98
1 files changed, 49 insertions, 49 deletions
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 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-18 07:14:56 -0500