Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | #ifndef __XFS_INODE_H__ |
| 19 | #define __XFS_INODE_H__ |
| 20 | |
Christoph Hellwig | 347d1c0 | 2007-08-28 13:57:51 +1000 | [diff] [blame] | 21 | struct xfs_dinode; |
| 22 | struct xfs_dinode_core; |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 23 | struct xfs_inode; |
Christoph Hellwig | 347d1c0 | 2007-08-28 13:57:51 +1000 | [diff] [blame] | 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | /* |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 26 | * Fork identifiers. |
| 27 | */ |
| 28 | #define XFS_DATA_FORK 0 |
| 29 | #define XFS_ATTR_FORK 1 |
| 30 | |
| 31 | /* |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 32 | * The following xfs_ext_irec_t struct introduces a second (top) level |
| 33 | * to the in-core extent allocation scheme. These structs are allocated |
| 34 | * in a contiguous block, creating an indirection array where each entry |
| 35 | * (irec) contains a pointer to a buffer of in-core extent records which |
| 36 | * it manages. Each extent buffer is 4k in size, since 4k is the system |
| 37 | * page size on Linux i386 and systems with larger page sizes don't seem |
| 38 | * to gain much, if anything, by using their native page size as the |
| 39 | * extent buffer size. Also, using 4k extent buffers everywhere provides |
| 40 | * a consistent interface for CXFS across different platforms. |
| 41 | * |
| 42 | * There is currently no limit on the number of irec's (extent lists) |
| 43 | * allowed, so heavily fragmented files may require an indirection array |
| 44 | * which spans multiple system pages of memory. The number of extents |
| 45 | * which would require this amount of contiguous memory is very large |
| 46 | * and should not cause problems in the foreseeable future. However, |
| 47 | * if the memory needed for the contiguous array ever becomes a problem, |
| 48 | * it is possible that a third level of indirection may be required. |
| 49 | */ |
| 50 | typedef struct xfs_ext_irec { |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 51 | xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 52 | xfs_extnum_t er_extoff; /* extent offset in file */ |
| 53 | xfs_extnum_t er_extcount; /* number of extents in page/block */ |
| 54 | } xfs_ext_irec_t; |
| 55 | |
| 56 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | * File incore extent information, present for each of data & attr forks. |
| 58 | */ |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 59 | #define XFS_IEXT_BUFSZ 4096 |
| 60 | #define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) |
| 61 | #define XFS_INLINE_EXTS 2 |
| 62 | #define XFS_INLINE_DATA 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | typedef struct xfs_ifork { |
| 64 | int if_bytes; /* bytes in if_u1 */ |
| 65 | int if_real_bytes; /* bytes allocated in if_u1 */ |
| 66 | xfs_bmbt_block_t *if_broot; /* file's incore btree root */ |
| 67 | short if_broot_bytes; /* bytes allocated for root */ |
| 68 | unsigned char if_flags; /* per-fork flags */ |
| 69 | unsigned char if_ext_max; /* max # of extent records */ |
| 70 | xfs_extnum_t if_lastex; /* last if_extents used */ |
| 71 | union { |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 72 | xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */ |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 73 | xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | char *if_data; /* inline file data */ |
| 75 | } if_u1; |
| 76 | union { |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 77 | xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | /* very small file extents */ |
| 79 | char if_inline_data[XFS_INLINE_DATA]; |
| 80 | /* very small file data */ |
| 81 | xfs_dev_t if_rdev; /* dev number if special */ |
| 82 | uuid_t if_uuid; /* mount point value */ |
| 83 | } if_u2; |
| 84 | } xfs_ifork_t; |
| 85 | |
| 86 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | * This is the xfs in-core inode structure. |
| 88 | * Most of the on-disk inode is embedded in the i_d field. |
| 89 | * |
| 90 | * The extent pointers/inline file space, however, are managed |
| 91 | * separately. The memory for this information is pointed to by |
| 92 | * the if_u1 unions depending on the type of the data. |
| 93 | * This is used to linearize the array of extents for fast in-core |
| 94 | * access. This is used until the file's number of extents |
| 95 | * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers |
| 96 | * are accessed through the buffer cache. |
| 97 | * |
| 98 | * Other state kept in the in-core inode is used for identification, |
| 99 | * locking, transactional updating, etc of the inode. |
| 100 | * |
| 101 | * Generally, we do not want to hold the i_rlock while holding the |
| 102 | * i_ilock. Hierarchy is i_iolock followed by i_rlock. |
| 103 | * |
| 104 | * xfs_iptr_t contains all the inode fields upto and including the |
| 105 | * i_mnext and i_mprev fields, it is used as a marker in the inode |
| 106 | * chain off the mount structure by xfs_sync calls. |
| 107 | */ |
| 108 | |
Christoph Hellwig | 347d1c0 | 2007-08-28 13:57:51 +1000 | [diff] [blame] | 109 | typedef struct xfs_ictimestamp { |
| 110 | __int32_t t_sec; /* timestamp seconds */ |
| 111 | __int32_t t_nsec; /* timestamp nanoseconds */ |
| 112 | } xfs_ictimestamp_t; |
| 113 | |
| 114 | /* |
| 115 | * NOTE: This structure must be kept identical to struct xfs_dinode_core |
| 116 | * in xfs_dinode.h except for the endianess annotations. |
| 117 | */ |
| 118 | typedef struct xfs_icdinode { |
| 119 | __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ |
| 120 | __uint16_t di_mode; /* mode and type of file */ |
| 121 | __int8_t di_version; /* inode version */ |
| 122 | __int8_t di_format; /* format of di_c data */ |
| 123 | __uint16_t di_onlink; /* old number of links to file */ |
| 124 | __uint32_t di_uid; /* owner's user id */ |
| 125 | __uint32_t di_gid; /* owner's group id */ |
| 126 | __uint32_t di_nlink; /* number of links to file */ |
| 127 | __uint16_t di_projid; /* owner's project id */ |
| 128 | __uint8_t di_pad[8]; /* unused, zeroed space */ |
| 129 | __uint16_t di_flushiter; /* incremented on flush */ |
| 130 | xfs_ictimestamp_t di_atime; /* time last accessed */ |
| 131 | xfs_ictimestamp_t di_mtime; /* time last modified */ |
| 132 | xfs_ictimestamp_t di_ctime; /* time created/inode modified */ |
| 133 | xfs_fsize_t di_size; /* number of bytes in file */ |
| 134 | xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ |
| 135 | xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ |
| 136 | xfs_extnum_t di_nextents; /* number of extents in data fork */ |
| 137 | xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ |
| 138 | __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ |
| 139 | __int8_t di_aformat; /* format of attr fork's data */ |
| 140 | __uint32_t di_dmevmask; /* DMIG event mask */ |
| 141 | __uint16_t di_dmstate; /* DMIG state info */ |
| 142 | __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ |
| 143 | __uint32_t di_gen; /* generation number */ |
| 144 | } xfs_icdinode_t; |
| 145 | |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 146 | /* |
| 147 | * Flags for xfs_ichgtime(). |
| 148 | */ |
| 149 | #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ |
| 150 | #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ |
| 151 | |
| 152 | /* |
| 153 | * Per-fork incore inode flags. |
| 154 | */ |
| 155 | #define XFS_IFINLINE 0x01 /* Inline data is read in */ |
| 156 | #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ |
| 157 | #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ |
| 158 | #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ |
| 159 | |
| 160 | /* |
| 161 | * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate(). |
| 162 | */ |
| 163 | #define XFS_IMAP_LOOKUP 0x1 |
| 164 | #define XFS_IMAP_BULKSTAT 0x2 |
| 165 | |
| 166 | /* |
| 167 | * Fork handling. |
| 168 | */ |
| 169 | |
| 170 | #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) |
| 171 | #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) |
| 172 | |
| 173 | #define XFS_IFORK_PTR(ip,w) \ |
| 174 | ((w) == XFS_DATA_FORK ? \ |
| 175 | &(ip)->i_df : \ |
| 176 | (ip)->i_afp) |
| 177 | #define XFS_IFORK_DSIZE(ip) \ |
| 178 | (XFS_IFORK_Q(ip) ? \ |
| 179 | XFS_IFORK_BOFF(ip) : \ |
| 180 | XFS_LITINO((ip)->i_mount)) |
| 181 | #define XFS_IFORK_ASIZE(ip) \ |
| 182 | (XFS_IFORK_Q(ip) ? \ |
| 183 | XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \ |
| 184 | 0) |
| 185 | #define XFS_IFORK_SIZE(ip,w) \ |
| 186 | ((w) == XFS_DATA_FORK ? \ |
| 187 | XFS_IFORK_DSIZE(ip) : \ |
| 188 | XFS_IFORK_ASIZE(ip)) |
| 189 | #define XFS_IFORK_FORMAT(ip,w) \ |
| 190 | ((w) == XFS_DATA_FORK ? \ |
| 191 | (ip)->i_d.di_format : \ |
| 192 | (ip)->i_d.di_aformat) |
| 193 | #define XFS_IFORK_FMT_SET(ip,w,n) \ |
| 194 | ((w) == XFS_DATA_FORK ? \ |
| 195 | ((ip)->i_d.di_format = (n)) : \ |
| 196 | ((ip)->i_d.di_aformat = (n))) |
| 197 | #define XFS_IFORK_NEXTENTS(ip,w) \ |
| 198 | ((w) == XFS_DATA_FORK ? \ |
| 199 | (ip)->i_d.di_nextents : \ |
| 200 | (ip)->i_d.di_anextents) |
| 201 | #define XFS_IFORK_NEXT_SET(ip,w,n) \ |
| 202 | ((w) == XFS_DATA_FORK ? \ |
| 203 | ((ip)->i_d.di_nextents = (n)) : \ |
| 204 | ((ip)->i_d.di_anextents = (n))) |
| 205 | |
| 206 | |
| 207 | |
| 208 | #ifdef __KERNEL__ |
| 209 | |
| 210 | struct bhv_desc; |
| 211 | struct cred; |
| 212 | struct ktrace; |
| 213 | struct xfs_buf; |
| 214 | struct xfs_bmap_free; |
| 215 | struct xfs_bmbt_irec; |
| 216 | struct xfs_bmbt_block; |
| 217 | struct xfs_inode_log_item; |
| 218 | struct xfs_mount; |
| 219 | struct xfs_trans; |
| 220 | struct xfs_dquot; |
| 221 | |
| 222 | #if defined(XFS_ILOCK_TRACE) |
| 223 | #define XFS_ILOCK_KTRACE_SIZE 32 |
| 224 | extern ktrace_t *xfs_ilock_trace_buf; |
| 225 | extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); |
| 226 | #else |
| 227 | #define xfs_ilock_trace(i,n,f,ra) |
| 228 | #endif |
| 229 | |
| 230 | typedef struct dm_attrs_s { |
| 231 | __uint32_t da_dmevmask; /* DMIG event mask */ |
| 232 | __uint16_t da_dmstate; /* DMIG state info */ |
| 233 | __uint16_t da_pad; /* DMIG extra padding */ |
| 234 | } dm_attrs_t; |
| 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | typedef struct xfs_inode { |
| 237 | /* Inode linking and identification information. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | struct xfs_mount *i_mount; /* fs mount struct ptr */ |
| 239 | struct list_head i_reclaim; /* reclaim list */ |
Christoph Hellwig | 5ec7f8c | 2008-08-13 16:22:40 +1000 | [diff] [blame] | 240 | struct inode *i_vnode; /* vnode backpointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | struct xfs_dquot *i_udquot; /* user dquot */ |
| 242 | struct xfs_dquot *i_gdquot; /* group dquot */ |
| 243 | |
| 244 | /* Inode location stuff */ |
| 245 | xfs_ino_t i_ino; /* inode number (agno/agino)*/ |
| 246 | xfs_daddr_t i_blkno; /* blkno of inode buffer */ |
| 247 | ushort i_len; /* len of inode buffer */ |
| 248 | ushort i_boffset; /* off of inode in buffer */ |
| 249 | |
| 250 | /* Extent information. */ |
| 251 | xfs_ifork_t *i_afp; /* attribute fork pointer */ |
| 252 | xfs_ifork_t i_df; /* data fork */ |
| 253 | |
| 254 | /* Transaction and locking information. */ |
| 255 | struct xfs_trans *i_transp; /* ptr to owning transaction*/ |
| 256 | struct xfs_inode_log_item *i_itemp; /* logging information */ |
| 257 | mrlock_t i_lock; /* inode lock */ |
| 258 | mrlock_t i_iolock; /* inode IO lock */ |
David Chinner | c63942d | 2008-08-13 16:41:16 +1000 | [diff] [blame] | 259 | struct completion i_flush; /* inode flush completion q */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | atomic_t i_pincount; /* inode pin count */ |
| 261 | wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ |
David Chinner | f273ab8 | 2006-09-28 11:06:03 +1000 | [diff] [blame] | 262 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | /* Miscellaneous state. */ |
| 264 | unsigned short i_flags; /* see defined flags below */ |
| 265 | unsigned char i_update_core; /* timestamps/size is dirty */ |
| 266 | unsigned char i_update_size; /* di_size field is dirty */ |
| 267 | unsigned int i_gen; /* generation count */ |
| 268 | unsigned int i_delayed_blks; /* count of delay alloc blks */ |
| 269 | |
Christoph Hellwig | 347d1c0 | 2007-08-28 13:57:51 +1000 | [diff] [blame] | 270 | xfs_icdinode_t i_d; /* most of ondisk inode */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Lachlan McIlroy | ba87ea6 | 2007-05-08 13:49:46 +1000 | [diff] [blame] | 272 | xfs_fsize_t i_size; /* in-memory size */ |
Christoph Hellwig | 613d704 | 2007-10-11 17:44:08 +1000 | [diff] [blame] | 273 | xfs_fsize_t i_new_size; /* size when write completes */ |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 274 | atomic_t i_iocount; /* outstanding I/O count */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | /* Trace buffers per inode. */ |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 276 | #ifdef XFS_INODE_TRACE |
Christoph Hellwig | 1543d79 | 2007-08-29 11:46:47 +1000 | [diff] [blame] | 277 | struct ktrace *i_trace; /* general inode trace */ |
| 278 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | #ifdef XFS_BMAP_TRACE |
| 280 | struct ktrace *i_xtrace; /* inode extent list trace */ |
| 281 | #endif |
Christoph Hellwig | 8c4ed63 | 2008-10-30 16:55:13 +1100 | [diff] [blame] | 282 | #ifdef XFS_BTREE_TRACE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | struct ktrace *i_btrace; /* inode bmap btree trace */ |
| 284 | #endif |
| 285 | #ifdef XFS_RW_TRACE |
| 286 | struct ktrace *i_rwtrace; /* inode read/write trace */ |
| 287 | #endif |
| 288 | #ifdef XFS_ILOCK_TRACE |
| 289 | struct ktrace *i_lock_trace; /* inode lock/unlock trace */ |
| 290 | #endif |
| 291 | #ifdef XFS_DIR2_TRACE |
| 292 | struct ktrace *i_dir_trace; /* inode directory trace */ |
| 293 | #endif |
| 294 | } xfs_inode_t; |
| 295 | |
Lachlan McIlroy | ba87ea6 | 2007-05-08 13:49:46 +1000 | [diff] [blame] | 296 | #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ |
| 297 | (ip)->i_size : (ip)->i_d.di_size; |
David Chinner | 7a18c38 | 2006-11-11 18:04:54 +1100 | [diff] [blame] | 298 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 299 | /* Convert from vfs inode to xfs inode */ |
| 300 | static inline struct xfs_inode *XFS_I(struct inode *inode) |
| 301 | { |
| 302 | return (struct xfs_inode *)inode->i_private; |
| 303 | } |
| 304 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 305 | /* convert from xfs inode to vfs inode */ |
| 306 | static inline struct inode *VFS_I(struct xfs_inode *ip) |
| 307 | { |
| 308 | return (struct inode *)ip->i_vnode; |
| 309 | } |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 310 | |
David Chinner | 7a18c38 | 2006-11-11 18:04:54 +1100 | [diff] [blame] | 311 | /* |
| 312 | * i_flags helper functions |
| 313 | */ |
| 314 | static inline void |
| 315 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) |
| 316 | { |
| 317 | ip->i_flags |= flags; |
| 318 | } |
| 319 | |
| 320 | static inline void |
| 321 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) |
| 322 | { |
| 323 | spin_lock(&ip->i_flags_lock); |
| 324 | __xfs_iflags_set(ip, flags); |
| 325 | spin_unlock(&ip->i_flags_lock); |
| 326 | } |
| 327 | |
| 328 | static inline void |
| 329 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) |
| 330 | { |
| 331 | spin_lock(&ip->i_flags_lock); |
| 332 | ip->i_flags &= ~flags; |
| 333 | spin_unlock(&ip->i_flags_lock); |
| 334 | } |
| 335 | |
| 336 | static inline int |
| 337 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) |
| 338 | { |
| 339 | return (ip->i_flags & flags); |
| 340 | } |
| 341 | |
| 342 | static inline int |
| 343 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) |
| 344 | { |
| 345 | int ret; |
| 346 | spin_lock(&ip->i_flags_lock); |
| 347 | ret = __xfs_iflags_test(ip, flags); |
| 348 | spin_unlock(&ip->i_flags_lock); |
| 349 | return ret; |
| 350 | } |
Christoph Hellwig | 09262b4 | 2007-08-29 11:44:50 +1000 | [diff] [blame] | 351 | |
| 352 | static inline int |
| 353 | xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) |
| 354 | { |
| 355 | int ret; |
| 356 | |
| 357 | spin_lock(&ip->i_flags_lock); |
| 358 | ret = ip->i_flags & flags; |
| 359 | if (ret) |
| 360 | ip->i_flags &= ~flags; |
| 361 | spin_unlock(&ip->i_flags_lock); |
| 362 | return ret; |
| 363 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
| 365 | /* |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 366 | * Manage the i_flush queue embedded in the inode. This completion |
| 367 | * queue synchronizes processes attempting to flush the in-core |
| 368 | * inode back to disk. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | */ |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 370 | static inline void xfs_iflock(xfs_inode_t *ip) |
| 371 | { |
| 372 | wait_for_completion(&ip->i_flush); |
| 373 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 375 | static inline int xfs_iflock_nowait(xfs_inode_t *ip) |
| 376 | { |
| 377 | return try_wait_for_completion(&ip->i_flush); |
| 378 | } |
Christoph Hellwig | 45ba598 | 2007-12-07 14:07:20 +1100 | [diff] [blame] | 379 | |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 380 | static inline void xfs_ifunlock(xfs_inode_t *ip) |
| 381 | { |
| 382 | complete(&ip->i_flush); |
| 383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
| 385 | /* |
| 386 | * In-core inode flags. |
| 387 | */ |
| 388 | #define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */ |
| 389 | #define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */ |
| 390 | #define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */ |
| 391 | #define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */ |
| 392 | #define XFS_ISTALE 0x0010 /* inode has been staled */ |
| 393 | #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */ |
| 394 | #define XFS_INEW 0x0040 |
David Chinner | 2a82b8b | 2007-07-11 11:09:12 +1000 | [diff] [blame] | 395 | #define XFS_IFILESTREAM 0x0080 /* inode is in a filestream directory */ |
Christoph Hellwig | b3aea4e | 2007-08-29 11:44:37 +1000 | [diff] [blame] | 396 | #define XFS_IMODIFIED 0x0100 /* XFS inode state possibly differs */ |
| 397 | /* to the Linux inode state. */ |
| 398 | #define XFS_ITRUNCATED 0x0200 /* truncated down so flush-on-close */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
| 400 | /* |
| 401 | * Flags for inode locking. |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 402 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
| 403 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | */ |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 405 | #define XFS_IOLOCK_EXCL (1<<0) |
| 406 | #define XFS_IOLOCK_SHARED (1<<1) |
| 407 | #define XFS_ILOCK_EXCL (1<<2) |
| 408 | #define XFS_ILOCK_SHARED (1<<3) |
| 409 | #define XFS_IUNLOCK_NONOTIFY (1<<4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 411 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 412 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 413 | |
| 414 | /* |
| 415 | * Flags for lockdep annotations. |
| 416 | * |
| 417 | * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes |
| 418 | * (ie directory operations that require locking a directory inode and |
| 419 | * an entry inode). The first inode gets locked with this flag so it |
| 420 | * gets a lockdep subclass of 1 and the second lock will have a lockdep |
| 421 | * subclass of 0. |
| 422 | * |
David Chinner | 0f1145c | 2007-06-29 17:26:09 +1000 | [diff] [blame] | 423 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 424 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
| 425 | * and each subsequent lock acquired will increment the subclass by one. |
| 426 | * So the first lock acquired will have a lockdep subclass of 2, the |
David Chinner | 0f1145c | 2007-06-29 17:26:09 +1000 | [diff] [blame] | 427 | * second lock will have a lockdep subclass of 3, and so on. It is |
| 428 | * the responsibility of the class builder to shift this to the correct |
| 429 | * portion of the lock_mode lockdep mask. |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 430 | */ |
David Chinner | 0f1145c | 2007-06-29 17:26:09 +1000 | [diff] [blame] | 431 | #define XFS_LOCK_PARENT 1 |
| 432 | #define XFS_LOCK_INUMORDER 2 |
| 433 | |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 434 | #define XFS_IOLOCK_SHIFT 16 |
David Chinner | 0f1145c | 2007-06-29 17:26:09 +1000 | [diff] [blame] | 435 | #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 436 | |
| 437 | #define XFS_ILOCK_SHIFT 24 |
David Chinner | 0f1145c | 2007-06-29 17:26:09 +1000 | [diff] [blame] | 438 | #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) |
Lachlan McIlroy | f7c66ce | 2007-05-08 13:50:19 +1000 | [diff] [blame] | 439 | |
| 440 | #define XFS_IOLOCK_DEP_MASK 0x00ff0000 |
| 441 | #define XFS_ILOCK_DEP_MASK 0xff000000 |
| 442 | #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) |
| 443 | |
| 444 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) |
| 445 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | |
| 447 | /* |
| 448 | * Flags for xfs_iflush() |
| 449 | */ |
| 450 | #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 |
| 451 | #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 |
| 452 | #define XFS_IFLUSH_SYNC 3 |
| 453 | #define XFS_IFLUSH_ASYNC 4 |
| 454 | #define XFS_IFLUSH_DELWRI 5 |
David Chinner | a3f74ff | 2008-03-06 13:43:42 +1100 | [diff] [blame] | 455 | #define XFS_IFLUSH_ASYNC_NOBLOCK 6 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | |
| 457 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | * Flags for xfs_itruncate_start(). |
| 459 | */ |
| 460 | #define XFS_ITRUNC_DEFINITE 0x1 |
| 461 | #define XFS_ITRUNC_MAYBE 0x2 |
| 462 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | /* |
| 464 | * For multiple groups support: if S_ISGID bit is set in the parent |
| 465 | * directory, group of new file is set to that of the parent, and |
| 466 | * new subdirectory gets S_ISGID bit from parent. |
| 467 | */ |
Christoph Hellwig | bd186aa | 2007-08-30 17:21:12 +1000 | [diff] [blame] | 468 | #define XFS_INHERIT_GID(pip) \ |
| 469 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ |
| 470 | ((pip)->i_d.di_mode & S_ISGID)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
| 472 | /* |
Nathan Scott | 745b1f47 | 2006-09-28 11:02:23 +1000 | [diff] [blame] | 473 | * Flags for xfs_iget() |
| 474 | */ |
| 475 | #define XFS_IGET_CREATE 0x1 |
| 476 | #define XFS_IGET_BULKSTAT 0x2 |
| 477 | |
| 478 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | * xfs_iget.c prototypes. |
| 480 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | void xfs_ihash_init(struct xfs_mount *); |
| 482 | void xfs_ihash_free(struct xfs_mount *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, |
| 484 | struct xfs_trans *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
| 486 | uint, uint, xfs_inode_t **, xfs_daddr_t); |
| 487 | void xfs_iput(xfs_inode_t *, uint); |
| 488 | void xfs_iput_new(xfs_inode_t *, uint); |
| 489 | void xfs_ilock(xfs_inode_t *, uint); |
| 490 | int xfs_ilock_nowait(xfs_inode_t *, uint); |
| 491 | void xfs_iunlock(xfs_inode_t *, uint); |
| 492 | void xfs_ilock_demote(xfs_inode_t *, uint); |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 493 | int xfs_isilocked(xfs_inode_t *, uint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | uint xfs_ilock_map_shared(xfs_inode_t *); |
| 495 | void xfs_iunlock_map_shared(xfs_inode_t *, uint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | void xfs_ireclaim(xfs_inode_t *); |
| 497 | int xfs_finish_reclaim(xfs_inode_t *, int, int); |
David Chinner | 75c68f4 | 2008-10-30 17:06:28 +1100 | [diff] [blame] | 498 | int xfs_finish_reclaim_all(struct xfs_mount *, int, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
| 500 | /* |
| 501 | * xfs_inode.c prototypes. |
| 502 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, |
Nathan Scott | 745b1f47 | 2006-09-28 11:02:23 +1000 | [diff] [blame] | 504 | xfs_inode_t **, xfs_daddr_t, uint); |
Nathan Scott | 31b084a | 2005-05-05 13:25:00 -0700 | [diff] [blame] | 505 | int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, |
| 506 | xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, |
| 507 | int, struct xfs_buf **, boolean_t *, xfs_inode_t **); |
Christoph Hellwig | 347d1c0 | 2007-08-28 13:57:51 +1000 | [diff] [blame] | 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | uint xfs_ip2xflags(struct xfs_inode *); |
Christoph Hellwig | 45ba598 | 2007-12-07 14:07:20 +1100 | [diff] [blame] | 510 | uint xfs_dic2xflags(struct xfs_dinode *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
| 512 | struct xfs_bmap_free *); |
Lachlan McIlroy | d3cf209 | 2007-05-08 13:49:27 +1000 | [diff] [blame] | 513 | int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, |
| 515 | xfs_fsize_t, int, int); |
| 516 | int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
David Chinner | 07c8f67 | 2008-10-30 16:11:59 +1100 | [diff] [blame] | 518 | struct xfs_inode * xfs_inode_alloc(struct xfs_mount *, xfs_ino_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | void xfs_idestroy(xfs_inode_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | void xfs_iextract(xfs_inode_t *); |
| 521 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | void xfs_ipin(xfs_inode_t *); |
| 523 | void xfs_iunpin(xfs_inode_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | int xfs_iflush(xfs_inode_t *, uint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | void xfs_ichgtime(xfs_inode_t *, int); |
| 526 | xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 527 | void xfs_lock_inodes(xfs_inode_t **, int, uint); |
Christoph Hellwig | e1cccd9 | 2008-08-13 16:18:07 +1000 | [diff] [blame] | 528 | void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 530 | void xfs_synchronize_atime(xfs_inode_t *); |
David Chinner | 5d51eff | 2007-11-23 16:29:18 +1100 | [diff] [blame] | 531 | void xfs_mark_inode_dirty_sync(xfs_inode_t *); |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 532 | |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 533 | #endif /* __KERNEL__ */ |
| 534 | |
| 535 | int xfs_itobp(struct xfs_mount *, struct xfs_trans *, |
| 536 | struct xfs_inode *, struct xfs_dinode **, |
| 537 | struct xfs_buf **, xfs_daddr_t, uint, uint); |
| 538 | void xfs_dinode_from_disk(struct xfs_icdinode *, |
| 539 | struct xfs_dinode_core *); |
| 540 | void xfs_dinode_to_disk(struct xfs_dinode_core *, |
| 541 | struct xfs_icdinode *); |
| 542 | void xfs_idestroy_fork(struct xfs_inode *, int); |
| 543 | void xfs_idata_realloc(struct xfs_inode *, int, int); |
| 544 | void xfs_iroot_realloc(struct xfs_inode *, int, int); |
| 545 | int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); |
| 546 | int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); |
| 547 | |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 548 | xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 549 | void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, |
| 550 | xfs_bmbt_irec_t *); |
| 551 | void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 552 | void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 553 | void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); |
| 554 | void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); |
| 555 | void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 556 | void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 557 | void xfs_iext_realloc_direct(xfs_ifork_t *, int); |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 558 | void xfs_iext_realloc_indirect(xfs_ifork_t *, int); |
| 559 | void xfs_iext_indirect_to_direct(xfs_ifork_t *); |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 560 | void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); |
| 561 | void xfs_iext_inline_to_direct(xfs_ifork_t *, int); |
| 562 | void xfs_iext_destroy(xfs_ifork_t *); |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 563 | xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); |
Mandy Kirkconnell | 0293ce3 | 2006-03-14 13:30:23 +1100 | [diff] [blame] | 564 | xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); |
| 565 | xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); |
| 566 | void xfs_iext_irec_init(xfs_ifork_t *); |
| 567 | xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); |
| 568 | void xfs_iext_irec_remove(xfs_ifork_t *, int); |
| 569 | void xfs_iext_irec_compact(xfs_ifork_t *); |
| 570 | void xfs_iext_irec_compact_pages(xfs_ifork_t *); |
| 571 | void xfs_iext_irec_compact_full(xfs_ifork_t *); |
| 572 | void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
| 575 | |
| 576 | #ifdef DEBUG |
Barry Naujok | 847fff5 | 2008-10-30 17:05:38 +1100 | [diff] [blame] | 577 | void xfs_isize_check(struct xfs_mount *, struct xfs_inode *, |
| 578 | xfs_fsize_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | #else /* DEBUG */ |
| 580 | #define xfs_isize_check(mp, ip, isize) |
| 581 | #endif /* DEBUG */ |
| 582 | |
| 583 | #if defined(DEBUG) |
| 584 | void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); |
| 585 | #else |
| 586 | #define xfs_inobp_check(mp, bp) |
| 587 | #endif /* DEBUG */ |
| 588 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | extern struct kmem_zone *xfs_ifork_zone; |
| 590 | extern struct kmem_zone *xfs_inode_zone; |
| 591 | extern struct kmem_zone *xfs_ili_zone; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | #endif /* __XFS_INODE_H__ */ |