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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 LT |
5 | */ |
6 | #ifndef __XFS_INODE_H__ | |
7 | #define __XFS_INODE_H__ | |
8 | ||
1fd7115e | 9 | #include "xfs_inode_buf.h" |
5c4d97d0 | 10 | #include "xfs_inode_fork.h" |
1da177e4 | 11 | |
92bfc6e7 | 12 | /* |
1fd7115e | 13 | * Kernel only inode definitions |
92bfc6e7 | 14 | */ |
1fd7115e DC |
15 | struct xfs_dinode; |
16 | struct xfs_inode; | |
847fff5c | 17 | struct xfs_buf; |
847fff5c | 18 | struct xfs_bmbt_irec; |
847fff5c BN |
19 | struct xfs_inode_log_item; |
20 | struct xfs_mount; | |
21 | struct xfs_trans; | |
22 | struct xfs_dquot; | |
23 | ||
1da177e4 LT |
24 | typedef struct xfs_inode { |
25 | /* Inode linking and identification information. */ | |
1da177e4 | 26 | struct xfs_mount *i_mount; /* fs mount struct ptr */ |
1da177e4 LT |
27 | struct xfs_dquot *i_udquot; /* user dquot */ |
28 | struct xfs_dquot *i_gdquot; /* group dquot */ | |
92f8ff73 | 29 | struct xfs_dquot *i_pdquot; /* project dquot */ |
1da177e4 LT |
30 | |
31 | /* Inode location stuff */ | |
32 | xfs_ino_t i_ino; /* inode number (agno/agino)*/ | |
92bfc6e7 | 33 | struct xfs_imap i_imap; /* location for xfs_imap() */ |
1da177e4 LT |
34 | |
35 | /* Extent information. */ | |
3ba738df CH |
36 | struct xfs_ifork *i_cowfp; /* copy on write extents */ |
37 | struct xfs_ifork i_df; /* data fork */ | |
2ed5b09b | 38 | struct xfs_ifork i_af; /* attribute fork */ |
1da177e4 LT |
39 | |
40 | /* Transaction and locking information. */ | |
1da177e4 LT |
41 | struct xfs_inode_log_item *i_itemp; /* logging information */ |
42 | mrlock_t i_lock; /* inode lock */ | |
1da177e4 | 43 | atomic_t i_pincount; /* inode pin count */ |
ab23a776 | 44 | struct llist_node i_gclist; /* deferred inactivation list */ |
6772c1f1 DW |
45 | |
46 | /* | |
47 | * Bitsets of inode metadata that have been checked and/or are sick. | |
48 | * Callers must hold i_flags_lock before accessing this field. | |
49 | */ | |
50 | uint16_t i_checked; | |
51 | uint16_t i_sick; | |
52 | ||
f273ab84 | 53 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 | 54 | /* Miscellaneous state. */ |
49e4c70e | 55 | unsigned long i_flags; /* see defined flags below */ |
394aafdc | 56 | uint64_t i_delayed_blks; /* count of delay alloc blks */ |
13d2c10b | 57 | xfs_fsize_t i_disk_size; /* number of bytes in file */ |
6e73a545 | 58 | xfs_rfsblock_t i_nblocks; /* # of direct & btree blocks */ |
ceaf603c | 59 | prid_t i_projid; /* owner's project id */ |
031474c2 | 60 | xfs_extlen_t i_extsize; /* basic/minimum extent size */ |
ee7b83fd CH |
61 | /* cowextsize is only used for v3 inodes, flushiter for v1/2 */ |
62 | union { | |
63 | xfs_extlen_t i_cowextsize; /* basic cow extent size */ | |
64 | uint16_t i_flushiter; /* incremented on flush */ | |
65 | }; | |
7821ea30 | 66 | uint8_t i_forkoff; /* attr fork offset >> 3 */ |
db07349d | 67 | uint16_t i_diflags; /* XFS_DIFLAG_... */ |
3e09ab8f | 68 | uint64_t i_diflags2; /* XFS_DIFLAG2_... */ |
e98d5e88 | 69 | struct timespec64 i_crtime; /* time created */ |
1da177e4 | 70 | |
f12b9668 DW |
71 | /* |
72 | * Unlinked list pointers. These point to the next and previous inodes | |
73 | * in the AGI unlinked bucket list, respectively. These fields can | |
74 | * only be updated with the AGI locked. | |
75 | * | |
76 | * i_next_unlinked caches di_next_unlinked. | |
77 | */ | |
4fcc94d6 | 78 | xfs_agino_t i_next_unlinked; |
f12b9668 DW |
79 | |
80 | /* | |
81 | * If the inode is not on an unlinked list, this field is zero. If the | |
82 | * inode is the first element in an unlinked list, this field is | |
83 | * NULLAGINO. Otherwise, i_prev_unlinked points to the previous inode | |
84 | * in the unlinked list. | |
85 | */ | |
2fd26cc0 | 86 | xfs_agino_t i_prev_unlinked; |
4fcc94d6 | 87 | |
bf904248 DC |
88 | /* VFS inode */ |
89 | struct inode i_vnode; /* embedded VFS inode */ | |
cb357bf3 DW |
90 | |
91 | /* pending io completions */ | |
92 | spinlock_t i_ioend_lock; | |
93 | struct work_struct i_ioend_work; | |
94 | struct list_head i_ioend_list; | |
1da177e4 LT |
95 | } xfs_inode_t; |
96 | ||
f12b9668 DW |
97 | static inline bool xfs_inode_on_unlinked_list(const struct xfs_inode *ip) |
98 | { | |
99 | return ip->i_prev_unlinked != 0; | |
100 | } | |
101 | ||
932b42c6 DW |
102 | static inline bool xfs_inode_has_attr_fork(struct xfs_inode *ip) |
103 | { | |
104 | return ip->i_forkoff > 0; | |
105 | } | |
106 | ||
732436ef DW |
107 | static inline struct xfs_ifork * |
108 | xfs_ifork_ptr( | |
109 | struct xfs_inode *ip, | |
110 | int whichfork) | |
111 | { | |
112 | switch (whichfork) { | |
113 | case XFS_DATA_FORK: | |
114 | return &ip->i_df; | |
115 | case XFS_ATTR_FORK: | |
932b42c6 | 116 | if (!xfs_inode_has_attr_fork(ip)) |
2ed5b09b DW |
117 | return NULL; |
118 | return &ip->i_af; | |
732436ef DW |
119 | case XFS_COW_FORK: |
120 | return ip->i_cowfp; | |
121 | default: | |
122 | ASSERT(0); | |
123 | return NULL; | |
124 | } | |
125 | } | |
126 | ||
c01147d9 DW |
127 | static inline unsigned int xfs_inode_fork_boff(struct xfs_inode *ip) |
128 | { | |
129 | return ip->i_forkoff << 3; | |
130 | } | |
131 | ||
132 | static inline unsigned int xfs_inode_data_fork_size(struct xfs_inode *ip) | |
133 | { | |
134 | if (xfs_inode_has_attr_fork(ip)) | |
135 | return xfs_inode_fork_boff(ip); | |
136 | ||
137 | return XFS_LITINO(ip->i_mount); | |
138 | } | |
139 | ||
140 | static inline unsigned int xfs_inode_attr_fork_size(struct xfs_inode *ip) | |
141 | { | |
142 | if (xfs_inode_has_attr_fork(ip)) | |
143 | return XFS_LITINO(ip->i_mount) - xfs_inode_fork_boff(ip); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static inline unsigned int | |
148 | xfs_inode_fork_size( | |
149 | struct xfs_inode *ip, | |
150 | int whichfork) | |
151 | { | |
152 | switch (whichfork) { | |
153 | case XFS_DATA_FORK: | |
154 | return xfs_inode_data_fork_size(ip); | |
155 | case XFS_ATTR_FORK: | |
156 | return xfs_inode_attr_fork_size(ip); | |
157 | default: | |
158 | return 0; | |
159 | } | |
160 | } | |
161 | ||
01651646 DC |
162 | /* Convert from vfs inode to xfs inode */ |
163 | static inline struct xfs_inode *XFS_I(struct inode *inode) | |
164 | { | |
bf904248 | 165 | return container_of(inode, struct xfs_inode, i_vnode); |
01651646 DC |
166 | } |
167 | ||
01651646 DC |
168 | /* convert from xfs inode to vfs inode */ |
169 | static inline struct inode *VFS_I(struct xfs_inode *ip) | |
170 | { | |
bf904248 | 171 | return &ip->i_vnode; |
01651646 | 172 | } |
01651646 | 173 | |
ce7ae151 CH |
174 | /* |
175 | * For regular files we only update the on-disk filesize when actually | |
176 | * writing data back to disk. Until then only the copy in the VFS inode | |
177 | * is uptodate. | |
178 | */ | |
179 | static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) | |
180 | { | |
c19b3b05 | 181 | if (S_ISREG(VFS_I(ip)->i_mode)) |
ce7ae151 | 182 | return i_size_read(VFS_I(ip)); |
13d2c10b | 183 | return ip->i_disk_size; |
ce7ae151 CH |
184 | } |
185 | ||
6923e686 CH |
186 | /* |
187 | * If this I/O goes past the on-disk inode size update it unless it would | |
188 | * be past the current in-core inode size. | |
189 | */ | |
190 | static inline xfs_fsize_t | |
191 | xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) | |
192 | { | |
193 | xfs_fsize_t i_size = i_size_read(VFS_I(ip)); | |
194 | ||
ce57bcf6 | 195 | if (new_size > i_size || new_size < 0) |
6923e686 | 196 | new_size = i_size; |
13d2c10b | 197 | return new_size > ip->i_disk_size ? new_size : 0; |
6923e686 CH |
198 | } |
199 | ||
7a18c386 DC |
200 | /* |
201 | * i_flags helper functions | |
202 | */ | |
203 | static inline void | |
204 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
205 | { | |
206 | ip->i_flags |= flags; | |
207 | } | |
208 | ||
209 | static inline void | |
210 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
211 | { | |
212 | spin_lock(&ip->i_flags_lock); | |
213 | __xfs_iflags_set(ip, flags); | |
214 | spin_unlock(&ip->i_flags_lock); | |
215 | } | |
216 | ||
217 | static inline void | |
218 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
219 | { | |
220 | spin_lock(&ip->i_flags_lock); | |
221 | ip->i_flags &= ~flags; | |
222 | spin_unlock(&ip->i_flags_lock); | |
223 | } | |
224 | ||
225 | static inline int | |
226 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
227 | { | |
228 | return (ip->i_flags & flags); | |
229 | } | |
230 | ||
231 | static inline int | |
232 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
233 | { | |
234 | int ret; | |
235 | spin_lock(&ip->i_flags_lock); | |
236 | ret = __xfs_iflags_test(ip, flags); | |
237 | spin_unlock(&ip->i_flags_lock); | |
238 | return ret; | |
239 | } | |
09262b43 CH |
240 | |
241 | static inline int | |
242 | xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) | |
243 | { | |
244 | int ret; | |
245 | ||
246 | spin_lock(&ip->i_flags_lock); | |
247 | ret = ip->i_flags & flags; | |
248 | if (ret) | |
249 | ip->i_flags &= ~flags; | |
250 | spin_unlock(&ip->i_flags_lock); | |
251 | return ret; | |
252 | } | |
1da177e4 | 253 | |
474fce06 CH |
254 | static inline int |
255 | xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) | |
256 | { | |
257 | int ret; | |
258 | ||
259 | spin_lock(&ip->i_flags_lock); | |
260 | ret = ip->i_flags & flags; | |
261 | if (!ret) | |
262 | ip->i_flags |= flags; | |
263 | spin_unlock(&ip->i_flags_lock); | |
264 | return ret; | |
265 | } | |
266 | ||
163467d3 ZYW |
267 | static inline prid_t |
268 | xfs_get_initial_prid(struct xfs_inode *dp) | |
269 | { | |
db07349d | 270 | if (dp->i_diflags & XFS_DIFLAG_PROJINHERIT) |
ceaf603c | 271 | return dp->i_projid; |
163467d3 ZYW |
272 | |
273 | return XFS_PROJID_DEFAULT; | |
274 | } | |
275 | ||
46eeb521 DW |
276 | static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) |
277 | { | |
3e09ab8f | 278 | return ip->i_diflags2 & XFS_DIFLAG2_REFLINK; |
46eeb521 DW |
279 | } |
280 | ||
383e32b0 DW |
281 | static inline bool xfs_is_metadata_inode(struct xfs_inode *ip) |
282 | { | |
283 | struct xfs_mount *mp = ip->i_mount; | |
284 | ||
285 | return ip == mp->m_rbmip || ip == mp->m_rsumip || | |
286 | xfs_is_quota_inode(&mp->m_sb, ip->i_ino); | |
287 | } | |
288 | ||
51d62690 CH |
289 | /* |
290 | * Check if an inode has any data in the COW fork. This might be often false | |
291 | * even for inodes with the reflink flag when there is no pending COW operation. | |
292 | */ | |
293 | static inline bool xfs_inode_has_cow_data(struct xfs_inode *ip) | |
294 | { | |
295 | return ip->i_cowfp && ip->i_cowfp->if_bytes; | |
296 | } | |
297 | ||
f93e5436 DW |
298 | static inline bool xfs_inode_has_bigtime(struct xfs_inode *ip) |
299 | { | |
3e09ab8f | 300 | return ip->i_diflags2 & XFS_DIFLAG2_BIGTIME; |
f93e5436 DW |
301 | } |
302 | ||
9b7d16e3 CB |
303 | static inline bool xfs_inode_has_large_extent_counts(struct xfs_inode *ip) |
304 | { | |
305 | return ip->i_diflags2 & XFS_DIFLAG2_NREXT64; | |
306 | } | |
307 | ||
30fa529e CH |
308 | /* |
309 | * Return the buftarg used for data allocations on a given inode. | |
310 | */ | |
311 | #define xfs_inode_buftarg(ip) \ | |
312 | (XFS_IS_REALTIME_INODE(ip) ? \ | |
313 | (ip)->i_mount->m_rtdev_targp : (ip)->i_mount->m_ddev_targp) | |
314 | ||
1da177e4 LT |
315 | /* |
316 | * In-core inode flags. | |
317 | */ | |
474fce06 CH |
318 | #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ |
319 | #define XFS_ISTALE (1 << 1) /* inode has been staled */ | |
320 | #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ | |
1090427b | 321 | #define XFS_INEW (1 << 3) /* inode has just been allocated */ |
9b3beb02 | 322 | #define XFS_IPRESERVE_DM_FIELDS (1 << 4) /* has legacy DMAPI fields set */ |
474fce06 CH |
323 | #define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ |
324 | #define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ | |
718ecc50 | 325 | #define XFS_IFLUSHING (1 << 7) /* inode is being flushed */ |
f392e631 CH |
326 | #define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ |
327 | #define XFS_IPINNED (1 << __XFS_IPINNED_BIT) | |
dae2f8ed | 328 | #define XFS_IEOFBLOCKS (1 << 9) /* has the preallocblocks tag set */ |
ab23a776 | 329 | #define XFS_NEED_INACTIVE (1 << 10) /* see XFS_INACTIVATING below */ |
17c12bcd DW |
330 | /* |
331 | * If this unlinked inode is in the middle of recovery, don't let drop_inode | |
332 | * truncate and free the inode. This can happen if we iget the inode during | |
333 | * log recovery to replay a bmap operation on the inode. | |
334 | */ | |
335 | #define XFS_IRECOVERY (1 << 11) | |
91aae6be | 336 | #define XFS_ICOWBLOCKS (1 << 12)/* has the cowblocks tag set */ |
1da177e4 | 337 | |
ab23a776 DC |
338 | /* |
339 | * If we need to update on-disk metadata before this IRECLAIMABLE inode can be | |
340 | * freed, then NEED_INACTIVE will be set. Once we start the updates, the | |
341 | * INACTIVATING bit will be set to keep iget away from this inode. After the | |
342 | * inactivation completes, both flags will be cleared and the inode is a | |
343 | * plain old IRECLAIMABLE inode. | |
344 | */ | |
345 | #define XFS_INACTIVATING (1 << 13) | |
346 | ||
347 | /* All inode state flags related to inode reclaim. */ | |
348 | #define XFS_ALL_IRECLAIM_FLAGS (XFS_IRECLAIMABLE | \ | |
349 | XFS_IRECLAIM | \ | |
350 | XFS_NEED_INACTIVE | \ | |
351 | XFS_INACTIVATING) | |
352 | ||
778e24bb DC |
353 | /* |
354 | * Per-lifetime flags need to be reset when re-using a reclaimable inode during | |
5132ba8f | 355 | * inode lookup. This prevents unintended behaviour on the new inode from |
778e24bb DC |
356 | * ocurring. |
357 | */ | |
358 | #define XFS_IRECLAIM_RESET_FLAGS \ | |
359 | (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ | |
ab23a776 DC |
360 | XFS_IDIRTY_RELEASE | XFS_ITRUNCATED | XFS_NEED_INACTIVE | \ |
361 | XFS_INACTIVATING) | |
778e24bb | 362 | |
1da177e4 LT |
363 | /* |
364 | * Flags for inode locking. | |
f7c66ce3 LM |
365 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
366 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) | |
1da177e4 | 367 | */ |
a1033753 DC |
368 | #define XFS_IOLOCK_EXCL (1u << 0) |
369 | #define XFS_IOLOCK_SHARED (1u << 1) | |
370 | #define XFS_ILOCK_EXCL (1u << 2) | |
371 | #define XFS_ILOCK_SHARED (1u << 3) | |
372 | #define XFS_MMAPLOCK_EXCL (1u << 4) | |
373 | #define XFS_MMAPLOCK_SHARED (1u << 5) | |
1da177e4 | 374 | |
f7c66ce3 | 375 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
653c60b6 DC |
376 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ |
377 | | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED) | |
f7c66ce3 | 378 | |
0b1b213f CH |
379 | #define XFS_LOCK_FLAGS \ |
380 | { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ | |
381 | { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ | |
382 | { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ | |
653c60b6 DC |
383 | { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ |
384 | { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \ | |
385 | { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" } | |
0b1b213f CH |
386 | |
387 | ||
f7c66ce3 LM |
388 | /* |
389 | * Flags for lockdep annotations. | |
390 | * | |
9681153b | 391 | * XFS_LOCK_PARENT - for directory operations that require locking a |
0952c818 DC |
392 | * parent directory inode and a child entry inode. IOLOCK requires nesting, |
393 | * MMAPLOCK does not support this class, ILOCK requires a single subclass | |
394 | * to differentiate parent from child. | |
9681153b CH |
395 | * |
396 | * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary | |
397 | * inodes do not participate in the normal lock order, and thus have their | |
398 | * own subclasses. | |
f7c66ce3 | 399 | * |
0f1145cc | 400 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
f7c66ce3 LM |
401 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
402 | * and each subsequent lock acquired will increment the subclass by one. | |
0952c818 DC |
403 | * However, MAX_LOCKDEP_SUBCLASSES == 8, which means we are greatly |
404 | * limited to the subclasses we can represent via nesting. We need at least | |
405 | * 5 inodes nest depth for the ILOCK through rename, and we also have to support | |
406 | * XFS_ILOCK_PARENT, which gives 6 subclasses. Then we have XFS_ILOCK_RTBITMAP | |
407 | * and XFS_ILOCK_RTSUM, which are another 2 unique subclasses, so that's all | |
408 | * 8 subclasses supported by lockdep. | |
409 | * | |
410 | * This also means we have to number the sub-classes in the lowest bits of | |
411 | * the mask we keep, and we have to ensure we never exceed 3 bits of lockdep | |
412 | * mask and we can't use bit-masking to build the subclasses. What a mess. | |
413 | * | |
414 | * Bit layout: | |
415 | * | |
416 | * Bit Lock Region | |
417 | * 16-19 XFS_IOLOCK_SHIFT dependencies | |
418 | * 20-23 XFS_MMAPLOCK_SHIFT dependencies | |
419 | * 24-31 XFS_ILOCK_SHIFT dependencies | |
420 | * | |
421 | * IOLOCK values | |
422 | * | |
423 | * 0-3 subclass value | |
65523218 | 424 | * 4-7 unused |
0952c818 DC |
425 | * |
426 | * MMAPLOCK values | |
427 | * | |
428 | * 0-3 subclass value | |
429 | * 4-7 unused | |
430 | * | |
431 | * ILOCK values | |
432 | * 0-4 subclass values | |
433 | * 5 PARENT subclass (not nestable) | |
434 | * 6 RTBITMAP subclass (not nestable) | |
435 | * 7 RTSUM subclass (not nestable) | |
436 | * | |
f7c66ce3 | 437 | */ |
0952c818 | 438 | #define XFS_IOLOCK_SHIFT 16 |
65523218 | 439 | #define XFS_IOLOCK_MAX_SUBCLASS 3 |
a1033753 | 440 | #define XFS_IOLOCK_DEP_MASK 0x000f0000u |
0952c818 DC |
441 | |
442 | #define XFS_MMAPLOCK_SHIFT 20 | |
443 | #define XFS_MMAPLOCK_NUMORDER 0 | |
444 | #define XFS_MMAPLOCK_MAX_SUBCLASS 3 | |
a1033753 | 445 | #define XFS_MMAPLOCK_DEP_MASK 0x00f00000u |
0952c818 DC |
446 | |
447 | #define XFS_ILOCK_SHIFT 24 | |
a1033753 | 448 | #define XFS_ILOCK_PARENT_VAL 5u |
0952c818 | 449 | #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) |
a1033753 DC |
450 | #define XFS_ILOCK_RTBITMAP_VAL 6u |
451 | #define XFS_ILOCK_RTSUM_VAL 7u | |
452 | #define XFS_ILOCK_DEP_MASK 0xff000000u | |
0952c818 DC |
453 | #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) |
454 | #define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) | |
455 | #define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) | |
456 | ||
457 | #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ | |
653c60b6 DC |
458 | XFS_MMAPLOCK_DEP_MASK | \ |
459 | XFS_ILOCK_DEP_MASK) | |
460 | ||
461 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ | |
462 | >> XFS_IOLOCK_SHIFT) | |
463 | #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ | |
464 | >> XFS_MMAPLOCK_SHIFT) | |
465 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ | |
466 | >> XFS_ILOCK_SHIFT) | |
1da177e4 | 467 | |
69eb5fa1 DW |
468 | /* |
469 | * Layouts are broken in the BREAK_WRITE case to ensure that | |
470 | * layout-holders do not collide with local writes. Additionally, | |
471 | * layouts are broken in the BREAK_UNMAP case to make sure the | |
472 | * layout-holder has a consistent view of the file's extent map. While | |
473 | * BREAK_WRITE breaks can be satisfied by recalling FL_LAYOUT leases, | |
474 | * BREAK_UNMAP breaks additionally require waiting for busy dax-pages to | |
475 | * go idle. | |
476 | */ | |
477 | enum layout_break_reason { | |
478 | BREAK_WRITE, | |
479 | BREAK_UNMAP, | |
480 | }; | |
481 | ||
1da177e4 LT |
482 | /* |
483 | * For multiple groups support: if S_ISGID bit is set in the parent | |
484 | * directory, group of new file is set to that of the parent, and | |
485 | * new subdirectory gets S_ISGID bit from parent. | |
486 | */ | |
bd186aa9 | 487 | #define XFS_INHERIT_GID(pip) \ |
0560f31a | 488 | (xfs_has_grpid((pip)->i_mount) || (VFS_I(pip)->i_mode & S_ISGID)) |
1da177e4 | 489 | |
c24b5dfa | 490 | int xfs_release(struct xfs_inode *ip); |
d4d12c02 | 491 | int xfs_inactive(struct xfs_inode *ip); |
996b2329 | 492 | int xfs_lookup(struct xfs_inode *dp, const struct xfs_name *name, |
c24b5dfa | 493 | struct xfs_inode **ipp, struct xfs_name *ci_name); |
f2d40141 | 494 | int xfs_create(struct mnt_idmap *idmap, |
f736d93d | 495 | struct xfs_inode *dp, struct xfs_name *name, |
e6a688c3 DC |
496 | umode_t mode, dev_t rdev, bool need_xattr, |
497 | struct xfs_inode **ipp); | |
f2d40141 | 498 | int xfs_create_tmpfile(struct mnt_idmap *idmap, |
f736d93d | 499 | struct xfs_inode *dp, umode_t mode, |
a1f69417 | 500 | struct xfs_inode **ipp); |
c24b5dfa DC |
501 | int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, |
502 | struct xfs_inode *ip); | |
503 | int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, | |
504 | struct xfs_name *target_name); | |
f2d40141 | 505 | int xfs_rename(struct mnt_idmap *idmap, |
f736d93d | 506 | struct xfs_inode *src_dp, struct xfs_name *src_name, |
c24b5dfa DC |
507 | struct xfs_inode *src_ip, struct xfs_inode *target_dp, |
508 | struct xfs_name *target_name, | |
d31a1825 | 509 | struct xfs_inode *target_ip, unsigned int flags); |
c24b5dfa | 510 | |
1da177e4 LT |
511 | void xfs_ilock(xfs_inode_t *, uint); |
512 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
513 | void xfs_iunlock(xfs_inode_t *, uint); | |
514 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
e31cbde7 | 515 | bool xfs_isilocked(struct xfs_inode *, uint); |
309ecac8 | 516 | uint xfs_ilock_data_map_shared(struct xfs_inode *); |
efa70be1 | 517 | uint xfs_ilock_attr_map_shared(struct xfs_inode *); |
347d1c01 | 518 | |
1da177e4 | 519 | uint xfs_ip2xflags(struct xfs_inode *); |
0e0417f3 | 520 | int xfs_ifree(struct xfs_trans *, struct xfs_inode *); |
4e529339 BF |
521 | int xfs_itruncate_extents_flags(struct xfs_trans **, |
522 | struct xfs_inode *, int, xfs_fsize_t, int); | |
1da177e4 | 523 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
1fd7115e | 524 | |
54fbdd10 | 525 | int xfs_log_force_inode(struct xfs_inode *ip); |
777df5af | 526 | void xfs_iunpin_wait(xfs_inode_t *); |
1fd7115e DC |
527 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
528 | ||
5717ea4d | 529 | int xfs_iflush_cluster(struct xfs_buf *); |
7c2d238a DW |
530 | void xfs_lock_two_inodes(struct xfs_inode *ip0, uint ip0_mode, |
531 | struct xfs_inode *ip1, uint ip1_mode); | |
1da177e4 | 532 | |
2a0ec1d9 | 533 | xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); |
f7ca3522 | 534 | xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip); |
2a0ec1d9 | 535 | |
f2d40141 | 536 | int xfs_init_new_inode(struct mnt_idmap *idmap, struct xfs_trans *tp, |
b652afd9 DC |
537 | struct xfs_inode *pip, xfs_ino_t ino, umode_t mode, |
538 | xfs_nlink_t nlink, dev_t rdev, prid_t prid, bool init_xattrs, | |
539 | struct xfs_inode **ipp); | |
e546cb79 | 540 | |
13b86fc3 BF |
541 | static inline int |
542 | xfs_itruncate_extents( | |
543 | struct xfs_trans **tpp, | |
544 | struct xfs_inode *ip, | |
545 | int whichfork, | |
546 | xfs_fsize_t new_size) | |
547 | { | |
4e529339 | 548 | return xfs_itruncate_extents_flags(tpp, ip, whichfork, new_size, 0); |
13b86fc3 BF |
549 | } |
550 | ||
c24b5dfa | 551 | /* from xfs_file.c */ |
13f9e267 | 552 | int xfs_break_dax_layouts(struct inode *inode, bool *retry); |
69eb5fa1 DW |
553 | int xfs_break_layouts(struct inode *inode, uint *iolock, |
554 | enum layout_break_reason reason); | |
c24b5dfa | 555 | |
58c90473 | 556 | /* from xfs_iops.c */ |
2b3d1d41 CH |
557 | extern void xfs_setup_inode(struct xfs_inode *ip); |
558 | extern void xfs_setup_iops(struct xfs_inode *ip); | |
840d493d | 559 | extern void xfs_diflags_to_iflags(struct xfs_inode *ip, bool init); |
2b3d1d41 | 560 | |
58c90473 DC |
561 | /* |
562 | * When setting up a newly allocated inode, we need to call | |
563 | * xfs_finish_inode_setup() once the inode is fully instantiated at | |
564 | * the VFS level to prevent the rest of the world seeing the inode | |
565 | * before we've completed instantiation. Otherwise we can do it | |
566 | * the moment the inode lookup is complete. | |
567 | */ | |
58c90473 DC |
568 | static inline void xfs_finish_inode_setup(struct xfs_inode *ip) |
569 | { | |
570 | xfs_iflags_clear(ip, XFS_INEW); | |
571 | barrier(); | |
572 | unlock_new_inode(VFS_I(ip)); | |
573 | } | |
574 | ||
575 | static inline void xfs_setup_existing_inode(struct xfs_inode *ip) | |
576 | { | |
577 | xfs_setup_inode(ip); | |
2b3d1d41 | 578 | xfs_setup_iops(ip); |
58c90473 DC |
579 | xfs_finish_inode_setup(ip); |
580 | } | |
581 | ||
44a8736b | 582 | void xfs_irele(struct xfs_inode *ip); |
5a8d0f3c | 583 | |
182696fb | 584 | extern struct kmem_cache *xfs_inode_cache; |
1da177e4 | 585 | |
e153aa79 DW |
586 | /* The default CoW extent size hint. */ |
587 | #define XFS_DEFAULT_COWEXTSZ_HINT 32 | |
588 | ||
62af7d54 DW |
589 | bool xfs_inode_needs_inactive(struct xfs_inode *ip); |
590 | ||
cb357bf3 DW |
591 | void xfs_end_io(struct work_struct *work); |
592 | ||
e2aaee9c DW |
593 | int xfs_ilock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); |
594 | void xfs_iunlock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); | |
595 | ||
83771c50 DW |
596 | static inline bool |
597 | xfs_inode_unlinked_incomplete( | |
598 | struct xfs_inode *ip) | |
599 | { | |
600 | return VFS_I(ip)->i_nlink == 0 && !xfs_inode_on_unlinked_list(ip); | |
601 | } | |
602 | int xfs_inode_reload_unlinked_bucket(struct xfs_trans *tp, struct xfs_inode *ip); | |
603 | int xfs_inode_reload_unlinked(struct xfs_inode *ip); | |
604 | ||
1da177e4 | 605 | #endif /* __XFS_INODE_H__ */ |