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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_afp; /* attribute fork pointer */ |
37 | struct xfs_ifork *i_cowfp; /* copy on write extents */ | |
38 | struct xfs_ifork i_df; /* data fork */ | |
1da177e4 | 39 | |
32c5483a DC |
40 | /* operations vectors */ |
41 | const struct xfs_dir_ops *d_ops; /* directory ops vector */ | |
42 | ||
1da177e4 | 43 | /* Transaction and locking information. */ |
1da177e4 LT |
44 | struct xfs_inode_log_item *i_itemp; /* logging information */ |
45 | mrlock_t i_lock; /* inode lock */ | |
653c60b6 | 46 | mrlock_t i_mmaplock; /* inode mmap IO lock */ |
1da177e4 | 47 | atomic_t i_pincount; /* inode pin count */ |
f273ab84 | 48 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 | 49 | /* Miscellaneous state. */ |
49e4c70e | 50 | unsigned long i_flags; /* see defined flags below */ |
1da177e4 LT |
51 | unsigned int i_delayed_blks; /* count of delay alloc blks */ |
52 | ||
f8d55aa0 | 53 | struct xfs_icdinode i_d; /* most of ondisk inode */ |
1da177e4 | 54 | |
3993baeb DW |
55 | xfs_extnum_t i_cnextents; /* # of extents in cow fork */ |
56 | unsigned int i_cformat; /* format of cow fork */ | |
57 | ||
bf904248 DC |
58 | /* VFS inode */ |
59 | struct inode i_vnode; /* embedded VFS inode */ | |
1da177e4 LT |
60 | } xfs_inode_t; |
61 | ||
01651646 DC |
62 | /* Convert from vfs inode to xfs inode */ |
63 | static inline struct xfs_inode *XFS_I(struct inode *inode) | |
64 | { | |
bf904248 | 65 | return container_of(inode, struct xfs_inode, i_vnode); |
01651646 DC |
66 | } |
67 | ||
01651646 DC |
68 | /* convert from xfs inode to vfs inode */ |
69 | static inline struct inode *VFS_I(struct xfs_inode *ip) | |
70 | { | |
bf904248 | 71 | return &ip->i_vnode; |
01651646 | 72 | } |
01651646 | 73 | |
ce7ae151 CH |
74 | /* |
75 | * For regular files we only update the on-disk filesize when actually | |
76 | * writing data back to disk. Until then only the copy in the VFS inode | |
77 | * is uptodate. | |
78 | */ | |
79 | static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) | |
80 | { | |
c19b3b05 | 81 | if (S_ISREG(VFS_I(ip)->i_mode)) |
ce7ae151 CH |
82 | return i_size_read(VFS_I(ip)); |
83 | return ip->i_d.di_size; | |
84 | } | |
85 | ||
6923e686 CH |
86 | /* |
87 | * If this I/O goes past the on-disk inode size update it unless it would | |
88 | * be past the current in-core inode size. | |
89 | */ | |
90 | static inline xfs_fsize_t | |
91 | xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) | |
92 | { | |
93 | xfs_fsize_t i_size = i_size_read(VFS_I(ip)); | |
94 | ||
ce57bcf6 | 95 | if (new_size > i_size || new_size < 0) |
6923e686 CH |
96 | new_size = i_size; |
97 | return new_size > ip->i_d.di_size ? new_size : 0; | |
98 | } | |
99 | ||
7a18c386 DC |
100 | /* |
101 | * i_flags helper functions | |
102 | */ | |
103 | static inline void | |
104 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
105 | { | |
106 | ip->i_flags |= flags; | |
107 | } | |
108 | ||
109 | static inline void | |
110 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
111 | { | |
112 | spin_lock(&ip->i_flags_lock); | |
113 | __xfs_iflags_set(ip, flags); | |
114 | spin_unlock(&ip->i_flags_lock); | |
115 | } | |
116 | ||
117 | static inline void | |
118 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
119 | { | |
120 | spin_lock(&ip->i_flags_lock); | |
121 | ip->i_flags &= ~flags; | |
122 | spin_unlock(&ip->i_flags_lock); | |
123 | } | |
124 | ||
125 | static inline int | |
126 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
127 | { | |
128 | return (ip->i_flags & flags); | |
129 | } | |
130 | ||
131 | static inline int | |
132 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
133 | { | |
134 | int ret; | |
135 | spin_lock(&ip->i_flags_lock); | |
136 | ret = __xfs_iflags_test(ip, flags); | |
137 | spin_unlock(&ip->i_flags_lock); | |
138 | return ret; | |
139 | } | |
09262b43 CH |
140 | |
141 | static inline int | |
142 | xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) | |
143 | { | |
144 | int ret; | |
145 | ||
146 | spin_lock(&ip->i_flags_lock); | |
147 | ret = ip->i_flags & flags; | |
148 | if (ret) | |
149 | ip->i_flags &= ~flags; | |
150 | spin_unlock(&ip->i_flags_lock); | |
151 | return ret; | |
152 | } | |
1da177e4 | 153 | |
474fce06 CH |
154 | static inline int |
155 | xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) | |
156 | { | |
157 | int ret; | |
158 | ||
159 | spin_lock(&ip->i_flags_lock); | |
160 | ret = ip->i_flags & flags; | |
161 | if (!ret) | |
162 | ip->i_flags |= flags; | |
163 | spin_unlock(&ip->i_flags_lock); | |
164 | return ret; | |
165 | } | |
166 | ||
6743099c AM |
167 | /* |
168 | * Project quota id helpers (previously projid was 16bit only | |
25985edc | 169 | * and using two 16bit values to hold new 32bit projid was chosen |
6743099c AM |
170 | * to retain compatibility with "old" filesystems). |
171 | */ | |
172 | static inline prid_t | |
173 | xfs_get_projid(struct xfs_inode *ip) | |
174 | { | |
175 | return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; | |
176 | } | |
177 | ||
178 | static inline void | |
179 | xfs_set_projid(struct xfs_inode *ip, | |
180 | prid_t projid) | |
181 | { | |
c8ce540d DW |
182 | ip->i_d.di_projid_hi = (uint16_t) (projid >> 16); |
183 | ip->i_d.di_projid_lo = (uint16_t) (projid & 0xffff); | |
6743099c AM |
184 | } |
185 | ||
163467d3 ZYW |
186 | static inline prid_t |
187 | xfs_get_initial_prid(struct xfs_inode *dp) | |
188 | { | |
189 | if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) | |
190 | return xfs_get_projid(dp); | |
191 | ||
192 | return XFS_PROJID_DEFAULT; | |
193 | } | |
194 | ||
46eeb521 DW |
195 | static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) |
196 | { | |
197 | return ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK; | |
198 | } | |
199 | ||
51d62690 CH |
200 | /* |
201 | * Check if an inode has any data in the COW fork. This might be often false | |
202 | * even for inodes with the reflink flag when there is no pending COW operation. | |
203 | */ | |
204 | static inline bool xfs_inode_has_cow_data(struct xfs_inode *ip) | |
205 | { | |
206 | return ip->i_cowfp && ip->i_cowfp->if_bytes; | |
207 | } | |
208 | ||
1da177e4 LT |
209 | /* |
210 | * In-core inode flags. | |
211 | */ | |
474fce06 CH |
212 | #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ |
213 | #define XFS_ISTALE (1 << 1) /* inode has been staled */ | |
214 | #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ | |
756baca2 BF |
215 | #define __XFS_INEW_BIT 3 /* inode has just been allocated */ |
216 | #define XFS_INEW (1 << __XFS_INEW_BIT) | |
474fce06 CH |
217 | #define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ |
218 | #define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ | |
219 | #define __XFS_IFLOCK_BIT 7 /* inode is being flushed right now */ | |
220 | #define XFS_IFLOCK (1 << __XFS_IFLOCK_BIT) | |
f392e631 CH |
221 | #define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ |
222 | #define XFS_IPINNED (1 << __XFS_IPINNED_BIT) | |
5132ba8f | 223 | #define XFS_IDONTCACHE (1 << 9) /* don't cache the inode long term */ |
85a6e764 | 224 | #define XFS_IEOFBLOCKS (1 << 10)/* has the preallocblocks tag set */ |
17c12bcd DW |
225 | /* |
226 | * If this unlinked inode is in the middle of recovery, don't let drop_inode | |
227 | * truncate and free the inode. This can happen if we iget the inode during | |
228 | * log recovery to replay a bmap operation on the inode. | |
229 | */ | |
230 | #define XFS_IRECOVERY (1 << 11) | |
91aae6be | 231 | #define XFS_ICOWBLOCKS (1 << 12)/* has the cowblocks tag set */ |
1da177e4 | 232 | |
778e24bb DC |
233 | /* |
234 | * Per-lifetime flags need to be reset when re-using a reclaimable inode during | |
5132ba8f | 235 | * inode lookup. This prevents unintended behaviour on the new inode from |
778e24bb DC |
236 | * ocurring. |
237 | */ | |
238 | #define XFS_IRECLAIM_RESET_FLAGS \ | |
239 | (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ | |
f37211c3 | 240 | XFS_IDIRTY_RELEASE | XFS_ITRUNCATED) |
778e24bb | 241 | |
474fce06 CH |
242 | /* |
243 | * Synchronize processes attempting to flush the in-core inode back to disk. | |
244 | */ | |
245 | ||
98efe8af BF |
246 | static inline int xfs_isiflocked(struct xfs_inode *ip) |
247 | { | |
248 | return xfs_iflags_test(ip, XFS_IFLOCK); | |
249 | } | |
250 | ||
474fce06 CH |
251 | extern void __xfs_iflock(struct xfs_inode *ip); |
252 | ||
253 | static inline int xfs_iflock_nowait(struct xfs_inode *ip) | |
254 | { | |
255 | return !xfs_iflags_test_and_set(ip, XFS_IFLOCK); | |
256 | } | |
257 | ||
258 | static inline void xfs_iflock(struct xfs_inode *ip) | |
259 | { | |
260 | if (!xfs_iflock_nowait(ip)) | |
261 | __xfs_iflock(ip); | |
262 | } | |
263 | ||
264 | static inline void xfs_ifunlock(struct xfs_inode *ip) | |
265 | { | |
98efe8af | 266 | ASSERT(xfs_isiflocked(ip)); |
474fce06 | 267 | xfs_iflags_clear(ip, XFS_IFLOCK); |
311f08ac | 268 | smp_mb(); |
474fce06 CH |
269 | wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT); |
270 | } | |
271 | ||
1da177e4 LT |
272 | /* |
273 | * Flags for inode locking. | |
f7c66ce3 LM |
274 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
275 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) | |
1da177e4 | 276 | */ |
f7c66ce3 LM |
277 | #define XFS_IOLOCK_EXCL (1<<0) |
278 | #define XFS_IOLOCK_SHARED (1<<1) | |
279 | #define XFS_ILOCK_EXCL (1<<2) | |
280 | #define XFS_ILOCK_SHARED (1<<3) | |
653c60b6 DC |
281 | #define XFS_MMAPLOCK_EXCL (1<<4) |
282 | #define XFS_MMAPLOCK_SHARED (1<<5) | |
1da177e4 | 283 | |
f7c66ce3 | 284 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
653c60b6 DC |
285 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ |
286 | | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED) | |
f7c66ce3 | 287 | |
0b1b213f CH |
288 | #define XFS_LOCK_FLAGS \ |
289 | { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ | |
290 | { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ | |
291 | { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ | |
653c60b6 DC |
292 | { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ |
293 | { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \ | |
294 | { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" } | |
0b1b213f CH |
295 | |
296 | ||
f7c66ce3 LM |
297 | /* |
298 | * Flags for lockdep annotations. | |
299 | * | |
9681153b | 300 | * XFS_LOCK_PARENT - for directory operations that require locking a |
0952c818 DC |
301 | * parent directory inode and a child entry inode. IOLOCK requires nesting, |
302 | * MMAPLOCK does not support this class, ILOCK requires a single subclass | |
303 | * to differentiate parent from child. | |
9681153b CH |
304 | * |
305 | * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary | |
306 | * inodes do not participate in the normal lock order, and thus have their | |
307 | * own subclasses. | |
f7c66ce3 | 308 | * |
0f1145cc | 309 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
f7c66ce3 LM |
310 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
311 | * and each subsequent lock acquired will increment the subclass by one. | |
0952c818 DC |
312 | * However, MAX_LOCKDEP_SUBCLASSES == 8, which means we are greatly |
313 | * limited to the subclasses we can represent via nesting. We need at least | |
314 | * 5 inodes nest depth for the ILOCK through rename, and we also have to support | |
315 | * XFS_ILOCK_PARENT, which gives 6 subclasses. Then we have XFS_ILOCK_RTBITMAP | |
316 | * and XFS_ILOCK_RTSUM, which are another 2 unique subclasses, so that's all | |
317 | * 8 subclasses supported by lockdep. | |
318 | * | |
319 | * This also means we have to number the sub-classes in the lowest bits of | |
320 | * the mask we keep, and we have to ensure we never exceed 3 bits of lockdep | |
321 | * mask and we can't use bit-masking to build the subclasses. What a mess. | |
322 | * | |
323 | * Bit layout: | |
324 | * | |
325 | * Bit Lock Region | |
326 | * 16-19 XFS_IOLOCK_SHIFT dependencies | |
327 | * 20-23 XFS_MMAPLOCK_SHIFT dependencies | |
328 | * 24-31 XFS_ILOCK_SHIFT dependencies | |
329 | * | |
330 | * IOLOCK values | |
331 | * | |
332 | * 0-3 subclass value | |
65523218 | 333 | * 4-7 unused |
0952c818 DC |
334 | * |
335 | * MMAPLOCK values | |
336 | * | |
337 | * 0-3 subclass value | |
338 | * 4-7 unused | |
339 | * | |
340 | * ILOCK values | |
341 | * 0-4 subclass values | |
342 | * 5 PARENT subclass (not nestable) | |
343 | * 6 RTBITMAP subclass (not nestable) | |
344 | * 7 RTSUM subclass (not nestable) | |
345 | * | |
f7c66ce3 | 346 | */ |
0952c818 | 347 | #define XFS_IOLOCK_SHIFT 16 |
65523218 | 348 | #define XFS_IOLOCK_MAX_SUBCLASS 3 |
0952c818 | 349 | #define XFS_IOLOCK_DEP_MASK 0x000f0000 |
0952c818 DC |
350 | |
351 | #define XFS_MMAPLOCK_SHIFT 20 | |
352 | #define XFS_MMAPLOCK_NUMORDER 0 | |
353 | #define XFS_MMAPLOCK_MAX_SUBCLASS 3 | |
354 | #define XFS_MMAPLOCK_DEP_MASK 0x00f00000 | |
355 | ||
356 | #define XFS_ILOCK_SHIFT 24 | |
357 | #define XFS_ILOCK_PARENT_VAL 5 | |
358 | #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) | |
359 | #define XFS_ILOCK_RTBITMAP_VAL 6 | |
360 | #define XFS_ILOCK_RTSUM_VAL 7 | |
361 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
362 | #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) | |
363 | #define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) | |
364 | #define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) | |
365 | ||
366 | #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ | |
653c60b6 DC |
367 | XFS_MMAPLOCK_DEP_MASK | \ |
368 | XFS_ILOCK_DEP_MASK) | |
369 | ||
370 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ | |
371 | >> XFS_IOLOCK_SHIFT) | |
372 | #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ | |
373 | >> XFS_MMAPLOCK_SHIFT) | |
374 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ | |
375 | >> XFS_ILOCK_SHIFT) | |
1da177e4 | 376 | |
69eb5fa1 DW |
377 | /* |
378 | * Layouts are broken in the BREAK_WRITE case to ensure that | |
379 | * layout-holders do not collide with local writes. Additionally, | |
380 | * layouts are broken in the BREAK_UNMAP case to make sure the | |
381 | * layout-holder has a consistent view of the file's extent map. While | |
382 | * BREAK_WRITE breaks can be satisfied by recalling FL_LAYOUT leases, | |
383 | * BREAK_UNMAP breaks additionally require waiting for busy dax-pages to | |
384 | * go idle. | |
385 | */ | |
386 | enum layout_break_reason { | |
387 | BREAK_WRITE, | |
388 | BREAK_UNMAP, | |
389 | }; | |
390 | ||
1da177e4 LT |
391 | /* |
392 | * For multiple groups support: if S_ISGID bit is set in the parent | |
393 | * directory, group of new file is set to that of the parent, and | |
394 | * new subdirectory gets S_ISGID bit from parent. | |
395 | */ | |
bd186aa9 CH |
396 | #define XFS_INHERIT_GID(pip) \ |
397 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ | |
c19b3b05 | 398 | (VFS_I(pip)->i_mode & S_ISGID)) |
1da177e4 | 399 | |
c24b5dfa | 400 | int xfs_release(struct xfs_inode *ip); |
74564fb4 | 401 | void xfs_inactive(struct xfs_inode *ip); |
c24b5dfa DC |
402 | int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, |
403 | struct xfs_inode **ipp, struct xfs_name *ci_name); | |
404 | int xfs_create(struct xfs_inode *dp, struct xfs_name *name, | |
66f36464 | 405 | umode_t mode, dev_t rdev, struct xfs_inode **ipp); |
a1f69417 ES |
406 | int xfs_create_tmpfile(struct xfs_inode *dp, umode_t mode, |
407 | struct xfs_inode **ipp); | |
c24b5dfa DC |
408 | int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, |
409 | struct xfs_inode *ip); | |
410 | int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, | |
411 | struct xfs_name *target_name); | |
412 | int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, | |
413 | struct xfs_inode *src_ip, struct xfs_inode *target_dp, | |
414 | struct xfs_name *target_name, | |
d31a1825 | 415 | struct xfs_inode *target_ip, unsigned int flags); |
c24b5dfa | 416 | |
1da177e4 LT |
417 | void xfs_ilock(xfs_inode_t *, uint); |
418 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
419 | void xfs_iunlock(xfs_inode_t *, uint); | |
420 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
579aa9ca | 421 | int xfs_isilocked(xfs_inode_t *, uint); |
309ecac8 | 422 | uint xfs_ilock_data_map_shared(struct xfs_inode *); |
efa70be1 | 423 | uint xfs_ilock_attr_map_shared(struct xfs_inode *); |
347d1c01 | 424 | |
1da177e4 | 425 | uint xfs_ip2xflags(struct xfs_inode *); |
0e0417f3 | 426 | int xfs_ifree(struct xfs_trans *, struct xfs_inode *); |
4e529339 BF |
427 | int xfs_itruncate_extents_flags(struct xfs_trans **, |
428 | struct xfs_inode *, int, xfs_fsize_t, int); | |
1da177e4 | 429 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
1fd7115e | 430 | |
777df5af | 431 | void xfs_iunpin_wait(xfs_inode_t *); |
1fd7115e DC |
432 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
433 | ||
4c46819a | 434 | int xfs_iflush(struct xfs_inode *, struct xfs_buf **); |
7c2d238a DW |
435 | void xfs_lock_two_inodes(struct xfs_inode *ip0, uint ip0_mode, |
436 | struct xfs_inode *ip1, uint ip1_mode); | |
1da177e4 | 437 | |
2a0ec1d9 | 438 | xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); |
f7ca3522 | 439 | xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip); |
2a0ec1d9 | 440 | |
e546cb79 | 441 | int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, |
f59cf5c2 | 442 | xfs_nlink_t, dev_t, prid_t, |
c959025e | 443 | struct xfs_inode **); |
e546cb79 | 444 | |
13b86fc3 BF |
445 | static inline int |
446 | xfs_itruncate_extents( | |
447 | struct xfs_trans **tpp, | |
448 | struct xfs_inode *ip, | |
449 | int whichfork, | |
450 | xfs_fsize_t new_size) | |
451 | { | |
4e529339 | 452 | return xfs_itruncate_extents_flags(tpp, ip, whichfork, new_size, 0); |
13b86fc3 BF |
453 | } |
454 | ||
c24b5dfa | 455 | /* from xfs_file.c */ |
8add71ca CH |
456 | enum xfs_prealloc_flags { |
457 | XFS_PREALLOC_SET = (1 << 1), | |
458 | XFS_PREALLOC_CLEAR = (1 << 2), | |
459 | XFS_PREALLOC_SYNC = (1 << 3), | |
460 | XFS_PREALLOC_INVISIBLE = (1 << 4), | |
461 | }; | |
462 | ||
5885ebda DC |
463 | int xfs_update_prealloc_flags(struct xfs_inode *ip, |
464 | enum xfs_prealloc_flags flags); | |
69eb5fa1 DW |
465 | int xfs_break_layouts(struct inode *inode, uint *iolock, |
466 | enum layout_break_reason reason); | |
c24b5dfa | 467 | |
58c90473 | 468 | /* from xfs_iops.c */ |
2b3d1d41 CH |
469 | extern void xfs_setup_inode(struct xfs_inode *ip); |
470 | extern void xfs_setup_iops(struct xfs_inode *ip); | |
471 | ||
58c90473 DC |
472 | /* |
473 | * When setting up a newly allocated inode, we need to call | |
474 | * xfs_finish_inode_setup() once the inode is fully instantiated at | |
475 | * the VFS level to prevent the rest of the world seeing the inode | |
476 | * before we've completed instantiation. Otherwise we can do it | |
477 | * the moment the inode lookup is complete. | |
478 | */ | |
58c90473 DC |
479 | static inline void xfs_finish_inode_setup(struct xfs_inode *ip) |
480 | { | |
481 | xfs_iflags_clear(ip, XFS_INEW); | |
482 | barrier(); | |
483 | unlock_new_inode(VFS_I(ip)); | |
756baca2 | 484 | wake_up_bit(&ip->i_flags, __XFS_INEW_BIT); |
58c90473 DC |
485 | } |
486 | ||
487 | static inline void xfs_setup_existing_inode(struct xfs_inode *ip) | |
488 | { | |
489 | xfs_setup_inode(ip); | |
2b3d1d41 | 490 | xfs_setup_iops(ip); |
58c90473 DC |
491 | xfs_finish_inode_setup(ip); |
492 | } | |
493 | ||
44a8736b | 494 | void xfs_irele(struct xfs_inode *ip); |
5a8d0f3c | 495 | |
1da177e4 | 496 | extern struct kmem_zone *xfs_inode_zone; |
1da177e4 | 497 | |
e153aa79 DW |
498 | /* The default CoW extent size hint. */ |
499 | #define XFS_DEFAULT_COWEXTSZ_HINT 32 | |
500 | ||
9cfb9b47 DW |
501 | bool xfs_inode_verify_forks(struct xfs_inode *ip); |
502 | ||
1da177e4 | 503 | #endif /* __XFS_INODE_H__ */ |