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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; |
310a75a3 | 18 | struct xfs_defer_ops; |
847fff5c | 19 | struct xfs_bmbt_irec; |
847fff5c BN |
20 | struct xfs_inode_log_item; |
21 | struct xfs_mount; | |
22 | struct xfs_trans; | |
23 | struct xfs_dquot; | |
24 | ||
1da177e4 LT |
25 | typedef struct xfs_inode { |
26 | /* Inode linking and identification information. */ | |
1da177e4 | 27 | struct xfs_mount *i_mount; /* fs mount struct ptr */ |
1da177e4 LT |
28 | struct xfs_dquot *i_udquot; /* user dquot */ |
29 | struct xfs_dquot *i_gdquot; /* group dquot */ | |
92f8ff73 | 30 | struct xfs_dquot *i_pdquot; /* project dquot */ |
1da177e4 LT |
31 | |
32 | /* Inode location stuff */ | |
33 | xfs_ino_t i_ino; /* inode number (agno/agino)*/ | |
92bfc6e7 | 34 | struct xfs_imap i_imap; /* location for xfs_imap() */ |
1da177e4 LT |
35 | |
36 | /* Extent information. */ | |
37 | xfs_ifork_t *i_afp; /* attribute fork pointer */ | |
3993baeb | 38 | xfs_ifork_t *i_cowfp; /* copy on write extents */ |
1da177e4 LT |
39 | xfs_ifork_t i_df; /* data fork */ |
40 | ||
32c5483a DC |
41 | /* operations vectors */ |
42 | const struct xfs_dir_ops *d_ops; /* directory ops vector */ | |
43 | ||
1da177e4 | 44 | /* Transaction and locking information. */ |
1da177e4 LT |
45 | struct xfs_inode_log_item *i_itemp; /* logging information */ |
46 | mrlock_t i_lock; /* inode lock */ | |
653c60b6 | 47 | mrlock_t i_mmaplock; /* inode mmap IO lock */ |
1da177e4 | 48 | atomic_t i_pincount; /* inode pin count */ |
f273ab84 | 49 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 | 50 | /* Miscellaneous state. */ |
49e4c70e | 51 | unsigned long i_flags; /* see defined flags below */ |
1da177e4 LT |
52 | unsigned int i_delayed_blks; /* count of delay alloc blks */ |
53 | ||
f8d55aa0 | 54 | struct xfs_icdinode i_d; /* most of ondisk inode */ |
1da177e4 | 55 | |
3993baeb DW |
56 | xfs_extnum_t i_cnextents; /* # of extents in cow fork */ |
57 | unsigned int i_cformat; /* format of cow fork */ | |
58 | ||
bf904248 DC |
59 | /* VFS inode */ |
60 | struct inode i_vnode; /* embedded VFS inode */ | |
1da177e4 LT |
61 | } xfs_inode_t; |
62 | ||
01651646 DC |
63 | /* Convert from vfs inode to xfs inode */ |
64 | static inline struct xfs_inode *XFS_I(struct inode *inode) | |
65 | { | |
bf904248 | 66 | return container_of(inode, struct xfs_inode, i_vnode); |
01651646 DC |
67 | } |
68 | ||
01651646 DC |
69 | /* convert from xfs inode to vfs inode */ |
70 | static inline struct inode *VFS_I(struct xfs_inode *ip) | |
71 | { | |
bf904248 | 72 | return &ip->i_vnode; |
01651646 | 73 | } |
01651646 | 74 | |
ce7ae151 CH |
75 | /* |
76 | * For regular files we only update the on-disk filesize when actually | |
77 | * writing data back to disk. Until then only the copy in the VFS inode | |
78 | * is uptodate. | |
79 | */ | |
80 | static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) | |
81 | { | |
c19b3b05 | 82 | if (S_ISREG(VFS_I(ip)->i_mode)) |
ce7ae151 CH |
83 | return i_size_read(VFS_I(ip)); |
84 | return ip->i_d.di_size; | |
85 | } | |
86 | ||
6923e686 CH |
87 | /* |
88 | * If this I/O goes past the on-disk inode size update it unless it would | |
89 | * be past the current in-core inode size. | |
90 | */ | |
91 | static inline xfs_fsize_t | |
92 | xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) | |
93 | { | |
94 | xfs_fsize_t i_size = i_size_read(VFS_I(ip)); | |
95 | ||
ce57bcf6 | 96 | if (new_size > i_size || new_size < 0) |
6923e686 CH |
97 | new_size = i_size; |
98 | return new_size > ip->i_d.di_size ? new_size : 0; | |
99 | } | |
100 | ||
7a18c386 DC |
101 | /* |
102 | * i_flags helper functions | |
103 | */ | |
104 | static inline void | |
105 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
106 | { | |
107 | ip->i_flags |= flags; | |
108 | } | |
109 | ||
110 | static inline void | |
111 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
112 | { | |
113 | spin_lock(&ip->i_flags_lock); | |
114 | __xfs_iflags_set(ip, flags); | |
115 | spin_unlock(&ip->i_flags_lock); | |
116 | } | |
117 | ||
118 | static inline void | |
119 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
120 | { | |
121 | spin_lock(&ip->i_flags_lock); | |
122 | ip->i_flags &= ~flags; | |
123 | spin_unlock(&ip->i_flags_lock); | |
124 | } | |
125 | ||
126 | static inline int | |
127 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
128 | { | |
129 | return (ip->i_flags & flags); | |
130 | } | |
131 | ||
132 | static inline int | |
133 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
134 | { | |
135 | int ret; | |
136 | spin_lock(&ip->i_flags_lock); | |
137 | ret = __xfs_iflags_test(ip, flags); | |
138 | spin_unlock(&ip->i_flags_lock); | |
139 | return ret; | |
140 | } | |
09262b43 CH |
141 | |
142 | static inline int | |
143 | xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) | |
144 | { | |
145 | int ret; | |
146 | ||
147 | spin_lock(&ip->i_flags_lock); | |
148 | ret = ip->i_flags & flags; | |
149 | if (ret) | |
150 | ip->i_flags &= ~flags; | |
151 | spin_unlock(&ip->i_flags_lock); | |
152 | return ret; | |
153 | } | |
1da177e4 | 154 | |
474fce06 CH |
155 | static inline int |
156 | xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) | |
157 | { | |
158 | int ret; | |
159 | ||
160 | spin_lock(&ip->i_flags_lock); | |
161 | ret = ip->i_flags & flags; | |
162 | if (!ret) | |
163 | ip->i_flags |= flags; | |
164 | spin_unlock(&ip->i_flags_lock); | |
165 | return ret; | |
166 | } | |
167 | ||
6743099c AM |
168 | /* |
169 | * Project quota id helpers (previously projid was 16bit only | |
25985edc | 170 | * and using two 16bit values to hold new 32bit projid was chosen |
6743099c AM |
171 | * to retain compatibility with "old" filesystems). |
172 | */ | |
173 | static inline prid_t | |
174 | xfs_get_projid(struct xfs_inode *ip) | |
175 | { | |
176 | return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; | |
177 | } | |
178 | ||
179 | static inline void | |
180 | xfs_set_projid(struct xfs_inode *ip, | |
181 | prid_t projid) | |
182 | { | |
c8ce540d DW |
183 | ip->i_d.di_projid_hi = (uint16_t) (projid >> 16); |
184 | ip->i_d.di_projid_lo = (uint16_t) (projid & 0xffff); | |
6743099c AM |
185 | } |
186 | ||
163467d3 ZYW |
187 | static inline prid_t |
188 | xfs_get_initial_prid(struct xfs_inode *dp) | |
189 | { | |
190 | if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) | |
191 | return xfs_get_projid(dp); | |
192 | ||
193 | return XFS_PROJID_DEFAULT; | |
194 | } | |
195 | ||
46eeb521 DW |
196 | static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) |
197 | { | |
198 | return ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK; | |
199 | } | |
200 | ||
1da177e4 LT |
201 | /* |
202 | * In-core inode flags. | |
203 | */ | |
474fce06 CH |
204 | #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ |
205 | #define XFS_ISTALE (1 << 1) /* inode has been staled */ | |
206 | #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ | |
756baca2 BF |
207 | #define __XFS_INEW_BIT 3 /* inode has just been allocated */ |
208 | #define XFS_INEW (1 << __XFS_INEW_BIT) | |
474fce06 CH |
209 | #define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ |
210 | #define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ | |
211 | #define __XFS_IFLOCK_BIT 7 /* inode is being flushed right now */ | |
212 | #define XFS_IFLOCK (1 << __XFS_IFLOCK_BIT) | |
f392e631 CH |
213 | #define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ |
214 | #define XFS_IPINNED (1 << __XFS_IPINNED_BIT) | |
5132ba8f | 215 | #define XFS_IDONTCACHE (1 << 9) /* don't cache the inode long term */ |
85a6e764 | 216 | #define XFS_IEOFBLOCKS (1 << 10)/* has the preallocblocks tag set */ |
17c12bcd DW |
217 | /* |
218 | * If this unlinked inode is in the middle of recovery, don't let drop_inode | |
219 | * truncate and free the inode. This can happen if we iget the inode during | |
220 | * log recovery to replay a bmap operation on the inode. | |
221 | */ | |
222 | #define XFS_IRECOVERY (1 << 11) | |
91aae6be | 223 | #define XFS_ICOWBLOCKS (1 << 12)/* has the cowblocks tag set */ |
1da177e4 | 224 | |
778e24bb DC |
225 | /* |
226 | * Per-lifetime flags need to be reset when re-using a reclaimable inode during | |
5132ba8f | 227 | * inode lookup. This prevents unintended behaviour on the new inode from |
778e24bb DC |
228 | * ocurring. |
229 | */ | |
230 | #define XFS_IRECLAIM_RESET_FLAGS \ | |
231 | (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ | |
f37211c3 | 232 | XFS_IDIRTY_RELEASE | XFS_ITRUNCATED) |
778e24bb | 233 | |
474fce06 CH |
234 | /* |
235 | * Synchronize processes attempting to flush the in-core inode back to disk. | |
236 | */ | |
237 | ||
98efe8af BF |
238 | static inline int xfs_isiflocked(struct xfs_inode *ip) |
239 | { | |
240 | return xfs_iflags_test(ip, XFS_IFLOCK); | |
241 | } | |
242 | ||
474fce06 CH |
243 | extern void __xfs_iflock(struct xfs_inode *ip); |
244 | ||
245 | static inline int xfs_iflock_nowait(struct xfs_inode *ip) | |
246 | { | |
247 | return !xfs_iflags_test_and_set(ip, XFS_IFLOCK); | |
248 | } | |
249 | ||
250 | static inline void xfs_iflock(struct xfs_inode *ip) | |
251 | { | |
252 | if (!xfs_iflock_nowait(ip)) | |
253 | __xfs_iflock(ip); | |
254 | } | |
255 | ||
256 | static inline void xfs_ifunlock(struct xfs_inode *ip) | |
257 | { | |
98efe8af | 258 | ASSERT(xfs_isiflocked(ip)); |
474fce06 | 259 | xfs_iflags_clear(ip, XFS_IFLOCK); |
311f08ac | 260 | smp_mb(); |
474fce06 CH |
261 | wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT); |
262 | } | |
263 | ||
1da177e4 LT |
264 | /* |
265 | * Flags for inode locking. | |
f7c66ce3 LM |
266 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
267 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) | |
1da177e4 | 268 | */ |
f7c66ce3 LM |
269 | #define XFS_IOLOCK_EXCL (1<<0) |
270 | #define XFS_IOLOCK_SHARED (1<<1) | |
271 | #define XFS_ILOCK_EXCL (1<<2) | |
272 | #define XFS_ILOCK_SHARED (1<<3) | |
653c60b6 DC |
273 | #define XFS_MMAPLOCK_EXCL (1<<4) |
274 | #define XFS_MMAPLOCK_SHARED (1<<5) | |
1da177e4 | 275 | |
f7c66ce3 | 276 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
653c60b6 DC |
277 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ |
278 | | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED) | |
f7c66ce3 | 279 | |
0b1b213f CH |
280 | #define XFS_LOCK_FLAGS \ |
281 | { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ | |
282 | { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ | |
283 | { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ | |
653c60b6 DC |
284 | { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ |
285 | { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \ | |
286 | { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" } | |
0b1b213f CH |
287 | |
288 | ||
f7c66ce3 LM |
289 | /* |
290 | * Flags for lockdep annotations. | |
291 | * | |
9681153b | 292 | * XFS_LOCK_PARENT - for directory operations that require locking a |
0952c818 DC |
293 | * parent directory inode and a child entry inode. IOLOCK requires nesting, |
294 | * MMAPLOCK does not support this class, ILOCK requires a single subclass | |
295 | * to differentiate parent from child. | |
9681153b CH |
296 | * |
297 | * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary | |
298 | * inodes do not participate in the normal lock order, and thus have their | |
299 | * own subclasses. | |
f7c66ce3 | 300 | * |
0f1145cc | 301 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
f7c66ce3 LM |
302 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
303 | * and each subsequent lock acquired will increment the subclass by one. | |
0952c818 DC |
304 | * However, MAX_LOCKDEP_SUBCLASSES == 8, which means we are greatly |
305 | * limited to the subclasses we can represent via nesting. We need at least | |
306 | * 5 inodes nest depth for the ILOCK through rename, and we also have to support | |
307 | * XFS_ILOCK_PARENT, which gives 6 subclasses. Then we have XFS_ILOCK_RTBITMAP | |
308 | * and XFS_ILOCK_RTSUM, which are another 2 unique subclasses, so that's all | |
309 | * 8 subclasses supported by lockdep. | |
310 | * | |
311 | * This also means we have to number the sub-classes in the lowest bits of | |
312 | * the mask we keep, and we have to ensure we never exceed 3 bits of lockdep | |
313 | * mask and we can't use bit-masking to build the subclasses. What a mess. | |
314 | * | |
315 | * Bit layout: | |
316 | * | |
317 | * Bit Lock Region | |
318 | * 16-19 XFS_IOLOCK_SHIFT dependencies | |
319 | * 20-23 XFS_MMAPLOCK_SHIFT dependencies | |
320 | * 24-31 XFS_ILOCK_SHIFT dependencies | |
321 | * | |
322 | * IOLOCK values | |
323 | * | |
324 | * 0-3 subclass value | |
65523218 | 325 | * 4-7 unused |
0952c818 DC |
326 | * |
327 | * MMAPLOCK values | |
328 | * | |
329 | * 0-3 subclass value | |
330 | * 4-7 unused | |
331 | * | |
332 | * ILOCK values | |
333 | * 0-4 subclass values | |
334 | * 5 PARENT subclass (not nestable) | |
335 | * 6 RTBITMAP subclass (not nestable) | |
336 | * 7 RTSUM subclass (not nestable) | |
337 | * | |
f7c66ce3 | 338 | */ |
0952c818 | 339 | #define XFS_IOLOCK_SHIFT 16 |
65523218 | 340 | #define XFS_IOLOCK_MAX_SUBCLASS 3 |
0952c818 | 341 | #define XFS_IOLOCK_DEP_MASK 0x000f0000 |
0952c818 DC |
342 | |
343 | #define XFS_MMAPLOCK_SHIFT 20 | |
344 | #define XFS_MMAPLOCK_NUMORDER 0 | |
345 | #define XFS_MMAPLOCK_MAX_SUBCLASS 3 | |
346 | #define XFS_MMAPLOCK_DEP_MASK 0x00f00000 | |
347 | ||
348 | #define XFS_ILOCK_SHIFT 24 | |
349 | #define XFS_ILOCK_PARENT_VAL 5 | |
350 | #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) | |
351 | #define XFS_ILOCK_RTBITMAP_VAL 6 | |
352 | #define XFS_ILOCK_RTSUM_VAL 7 | |
353 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
354 | #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) | |
355 | #define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) | |
356 | #define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) | |
357 | ||
358 | #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ | |
653c60b6 DC |
359 | XFS_MMAPLOCK_DEP_MASK | \ |
360 | XFS_ILOCK_DEP_MASK) | |
361 | ||
362 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ | |
363 | >> XFS_IOLOCK_SHIFT) | |
364 | #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ | |
365 | >> XFS_MMAPLOCK_SHIFT) | |
366 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ | |
367 | >> XFS_ILOCK_SHIFT) | |
1da177e4 | 368 | |
1da177e4 LT |
369 | /* |
370 | * For multiple groups support: if S_ISGID bit is set in the parent | |
371 | * directory, group of new file is set to that of the parent, and | |
372 | * new subdirectory gets S_ISGID bit from parent. | |
373 | */ | |
bd186aa9 CH |
374 | #define XFS_INHERIT_GID(pip) \ |
375 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ | |
c19b3b05 | 376 | (VFS_I(pip)->i_mode & S_ISGID)) |
1da177e4 | 377 | |
c24b5dfa | 378 | int xfs_release(struct xfs_inode *ip); |
74564fb4 | 379 | void xfs_inactive(struct xfs_inode *ip); |
c24b5dfa DC |
380 | int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, |
381 | struct xfs_inode **ipp, struct xfs_name *ci_name); | |
382 | int xfs_create(struct xfs_inode *dp, struct xfs_name *name, | |
66f36464 | 383 | umode_t mode, dev_t rdev, struct xfs_inode **ipp); |
a1f69417 ES |
384 | int xfs_create_tmpfile(struct xfs_inode *dp, umode_t mode, |
385 | struct xfs_inode **ipp); | |
c24b5dfa DC |
386 | int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, |
387 | struct xfs_inode *ip); | |
388 | int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, | |
389 | struct xfs_name *target_name); | |
390 | int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, | |
391 | struct xfs_inode *src_ip, struct xfs_inode *target_dp, | |
392 | struct xfs_name *target_name, | |
d31a1825 | 393 | struct xfs_inode *target_ip, unsigned int flags); |
c24b5dfa | 394 | |
1da177e4 LT |
395 | void xfs_ilock(xfs_inode_t *, uint); |
396 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
397 | void xfs_iunlock(xfs_inode_t *, uint); | |
398 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
579aa9ca | 399 | int xfs_isilocked(xfs_inode_t *, uint); |
309ecac8 | 400 | uint xfs_ilock_data_map_shared(struct xfs_inode *); |
efa70be1 | 401 | uint xfs_ilock_attr_map_shared(struct xfs_inode *); |
347d1c01 | 402 | |
1da177e4 | 403 | uint xfs_ip2xflags(struct xfs_inode *); |
1da177e4 | 404 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
310a75a3 | 405 | struct xfs_defer_ops *); |
4e529339 BF |
406 | int xfs_itruncate_extents_flags(struct xfs_trans **, |
407 | struct xfs_inode *, int, xfs_fsize_t, int); | |
1da177e4 | 408 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
1fd7115e | 409 | |
777df5af | 410 | void xfs_iunpin_wait(xfs_inode_t *); |
1fd7115e DC |
411 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
412 | ||
4c46819a | 413 | int xfs_iflush(struct xfs_inode *, struct xfs_buf **); |
7c2d238a DW |
414 | void xfs_lock_two_inodes(struct xfs_inode *ip0, uint ip0_mode, |
415 | struct xfs_inode *ip1, uint ip1_mode); | |
1da177e4 | 416 | |
2a0ec1d9 | 417 | xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); |
f7ca3522 | 418 | xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip); |
2a0ec1d9 | 419 | |
e546cb79 | 420 | int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, |
f59cf5c2 | 421 | xfs_nlink_t, dev_t, prid_t, |
c959025e | 422 | struct xfs_inode **); |
e546cb79 | 423 | |
13b86fc3 BF |
424 | static inline int |
425 | xfs_itruncate_extents( | |
426 | struct xfs_trans **tpp, | |
427 | struct xfs_inode *ip, | |
428 | int whichfork, | |
429 | xfs_fsize_t new_size) | |
430 | { | |
4e529339 | 431 | return xfs_itruncate_extents_flags(tpp, ip, whichfork, new_size, 0); |
13b86fc3 BF |
432 | } |
433 | ||
c24b5dfa | 434 | /* from xfs_file.c */ |
8add71ca CH |
435 | enum xfs_prealloc_flags { |
436 | XFS_PREALLOC_SET = (1 << 1), | |
437 | XFS_PREALLOC_CLEAR = (1 << 2), | |
438 | XFS_PREALLOC_SYNC = (1 << 3), | |
439 | XFS_PREALLOC_INVISIBLE = (1 << 4), | |
440 | }; | |
441 | ||
5885ebda DC |
442 | int xfs_update_prealloc_flags(struct xfs_inode *ip, |
443 | enum xfs_prealloc_flags flags); | |
c24b5dfa | 444 | |
58c90473 | 445 | /* from xfs_iops.c */ |
2b3d1d41 CH |
446 | extern void xfs_setup_inode(struct xfs_inode *ip); |
447 | extern void xfs_setup_iops(struct xfs_inode *ip); | |
448 | ||
58c90473 DC |
449 | /* |
450 | * When setting up a newly allocated inode, we need to call | |
451 | * xfs_finish_inode_setup() once the inode is fully instantiated at | |
452 | * the VFS level to prevent the rest of the world seeing the inode | |
453 | * before we've completed instantiation. Otherwise we can do it | |
454 | * the moment the inode lookup is complete. | |
455 | */ | |
58c90473 DC |
456 | static inline void xfs_finish_inode_setup(struct xfs_inode *ip) |
457 | { | |
458 | xfs_iflags_clear(ip, XFS_INEW); | |
459 | barrier(); | |
460 | unlock_new_inode(VFS_I(ip)); | |
756baca2 | 461 | wake_up_bit(&ip->i_flags, __XFS_INEW_BIT); |
58c90473 DC |
462 | } |
463 | ||
464 | static inline void xfs_setup_existing_inode(struct xfs_inode *ip) | |
465 | { | |
466 | xfs_setup_inode(ip); | |
2b3d1d41 | 467 | xfs_setup_iops(ip); |
58c90473 DC |
468 | xfs_finish_inode_setup(ip); |
469 | } | |
470 | ||
5a8d0f3c CH |
471 | #define IHOLD(ip) \ |
472 | do { \ | |
473 | ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ | |
7de9c6ee | 474 | ihold(VFS_I(ip)); \ |
0b1b213f | 475 | trace_xfs_ihold(ip, _THIS_IP_); \ |
5a8d0f3c CH |
476 | } while (0) |
477 | ||
478 | #define IRELE(ip) \ | |
479 | do { \ | |
0b1b213f | 480 | trace_xfs_irele(ip, _THIS_IP_); \ |
5a8d0f3c CH |
481 | iput(VFS_I(ip)); \ |
482 | } while (0) | |
483 | ||
1da177e4 | 484 | extern struct kmem_zone *xfs_inode_zone; |
1da177e4 | 485 | |
e153aa79 DW |
486 | /* The default CoW extent size hint. */ |
487 | #define XFS_DEFAULT_COWEXTSZ_HINT 32 | |
488 | ||
9cfb9b47 DW |
489 | bool xfs_inode_verify_forks(struct xfs_inode *ip); |
490 | ||
1da177e4 | 491 | #endif /* __XFS_INODE_H__ */ |