Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_INODE_H__ | |
19 | #define __XFS_INODE_H__ | |
20 | ||
1fd7115e | 21 | #include "xfs_inode_buf.h" |
5c4d97d0 | 22 | #include "xfs_inode_fork.h" |
1da177e4 | 23 | |
92bfc6e7 | 24 | /* |
1fd7115e | 25 | * Kernel only inode definitions |
92bfc6e7 | 26 | */ |
1fd7115e DC |
27 | struct xfs_dinode; |
28 | struct xfs_inode; | |
847fff5c | 29 | struct xfs_buf; |
310a75a3 | 30 | struct xfs_defer_ops; |
847fff5c | 31 | struct xfs_bmbt_irec; |
847fff5c BN |
32 | struct xfs_inode_log_item; |
33 | struct xfs_mount; | |
34 | struct xfs_trans; | |
35 | struct xfs_dquot; | |
36 | ||
1da177e4 LT |
37 | typedef struct xfs_inode { |
38 | /* Inode linking and identification information. */ | |
1da177e4 | 39 | struct xfs_mount *i_mount; /* fs mount struct ptr */ |
1da177e4 LT |
40 | struct xfs_dquot *i_udquot; /* user dquot */ |
41 | struct xfs_dquot *i_gdquot; /* group dquot */ | |
92f8ff73 | 42 | struct xfs_dquot *i_pdquot; /* project dquot */ |
1da177e4 LT |
43 | |
44 | /* Inode location stuff */ | |
45 | xfs_ino_t i_ino; /* inode number (agno/agino)*/ | |
92bfc6e7 | 46 | struct xfs_imap i_imap; /* location for xfs_imap() */ |
1da177e4 LT |
47 | |
48 | /* Extent information. */ | |
49 | xfs_ifork_t *i_afp; /* attribute fork pointer */ | |
3993baeb | 50 | xfs_ifork_t *i_cowfp; /* copy on write extents */ |
1da177e4 LT |
51 | xfs_ifork_t i_df; /* data fork */ |
52 | ||
32c5483a DC |
53 | /* operations vectors */ |
54 | const struct xfs_dir_ops *d_ops; /* directory ops vector */ | |
55 | ||
1da177e4 | 56 | /* Transaction and locking information. */ |
1da177e4 LT |
57 | struct xfs_inode_log_item *i_itemp; /* logging information */ |
58 | mrlock_t i_lock; /* inode lock */ | |
59 | mrlock_t i_iolock; /* inode IO lock */ | |
653c60b6 | 60 | mrlock_t i_mmaplock; /* inode mmap IO lock */ |
1da177e4 | 61 | atomic_t i_pincount; /* inode pin count */ |
f273ab84 | 62 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 | 63 | /* Miscellaneous state. */ |
49e4c70e | 64 | unsigned long i_flags; /* see defined flags below */ |
1da177e4 LT |
65 | unsigned int i_delayed_blks; /* count of delay alloc blks */ |
66 | ||
f8d55aa0 | 67 | struct xfs_icdinode i_d; /* most of ondisk inode */ |
1da177e4 | 68 | |
3993baeb DW |
69 | xfs_extnum_t i_cnextents; /* # of extents in cow fork */ |
70 | unsigned int i_cformat; /* format of cow fork */ | |
71 | ||
bf904248 DC |
72 | /* VFS inode */ |
73 | struct inode i_vnode; /* embedded VFS inode */ | |
1da177e4 LT |
74 | } xfs_inode_t; |
75 | ||
01651646 DC |
76 | /* Convert from vfs inode to xfs inode */ |
77 | static inline struct xfs_inode *XFS_I(struct inode *inode) | |
78 | { | |
bf904248 | 79 | return container_of(inode, struct xfs_inode, i_vnode); |
01651646 DC |
80 | } |
81 | ||
01651646 DC |
82 | /* convert from xfs inode to vfs inode */ |
83 | static inline struct inode *VFS_I(struct xfs_inode *ip) | |
84 | { | |
bf904248 | 85 | return &ip->i_vnode; |
01651646 | 86 | } |
01651646 | 87 | |
ce7ae151 CH |
88 | /* |
89 | * For regular files we only update the on-disk filesize when actually | |
90 | * writing data back to disk. Until then only the copy in the VFS inode | |
91 | * is uptodate. | |
92 | */ | |
93 | static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) | |
94 | { | |
c19b3b05 | 95 | if (S_ISREG(VFS_I(ip)->i_mode)) |
ce7ae151 CH |
96 | return i_size_read(VFS_I(ip)); |
97 | return ip->i_d.di_size; | |
98 | } | |
99 | ||
6923e686 CH |
100 | /* |
101 | * If this I/O goes past the on-disk inode size update it unless it would | |
102 | * be past the current in-core inode size. | |
103 | */ | |
104 | static inline xfs_fsize_t | |
105 | xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) | |
106 | { | |
107 | xfs_fsize_t i_size = i_size_read(VFS_I(ip)); | |
108 | ||
ce57bcf6 | 109 | if (new_size > i_size || new_size < 0) |
6923e686 CH |
110 | new_size = i_size; |
111 | return new_size > ip->i_d.di_size ? new_size : 0; | |
112 | } | |
113 | ||
7a18c386 DC |
114 | /* |
115 | * i_flags helper functions | |
116 | */ | |
117 | static inline void | |
118 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
119 | { | |
120 | ip->i_flags |= flags; | |
121 | } | |
122 | ||
123 | static inline void | |
124 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
125 | { | |
126 | spin_lock(&ip->i_flags_lock); | |
127 | __xfs_iflags_set(ip, flags); | |
128 | spin_unlock(&ip->i_flags_lock); | |
129 | } | |
130 | ||
131 | static inline void | |
132 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
133 | { | |
134 | spin_lock(&ip->i_flags_lock); | |
135 | ip->i_flags &= ~flags; | |
136 | spin_unlock(&ip->i_flags_lock); | |
137 | } | |
138 | ||
139 | static inline int | |
140 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
141 | { | |
142 | return (ip->i_flags & flags); | |
143 | } | |
144 | ||
145 | static inline int | |
146 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
147 | { | |
148 | int ret; | |
149 | spin_lock(&ip->i_flags_lock); | |
150 | ret = __xfs_iflags_test(ip, flags); | |
151 | spin_unlock(&ip->i_flags_lock); | |
152 | return ret; | |
153 | } | |
09262b43 CH |
154 | |
155 | static inline int | |
156 | xfs_iflags_test_and_clear(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 | } | |
1da177e4 | 167 | |
474fce06 CH |
168 | static inline int |
169 | xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) | |
170 | { | |
171 | int ret; | |
172 | ||
173 | spin_lock(&ip->i_flags_lock); | |
174 | ret = ip->i_flags & flags; | |
175 | if (!ret) | |
176 | ip->i_flags |= flags; | |
177 | spin_unlock(&ip->i_flags_lock); | |
178 | return ret; | |
179 | } | |
180 | ||
6743099c AM |
181 | /* |
182 | * Project quota id helpers (previously projid was 16bit only | |
25985edc | 183 | * and using two 16bit values to hold new 32bit projid was chosen |
6743099c AM |
184 | * to retain compatibility with "old" filesystems). |
185 | */ | |
186 | static inline prid_t | |
187 | xfs_get_projid(struct xfs_inode *ip) | |
188 | { | |
189 | return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; | |
190 | } | |
191 | ||
192 | static inline void | |
193 | xfs_set_projid(struct xfs_inode *ip, | |
194 | prid_t projid) | |
195 | { | |
196 | ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16); | |
197 | ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff); | |
198 | } | |
199 | ||
163467d3 ZYW |
200 | static inline prid_t |
201 | xfs_get_initial_prid(struct xfs_inode *dp) | |
202 | { | |
203 | if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) | |
204 | return xfs_get_projid(dp); | |
205 | ||
206 | return XFS_PROJID_DEFAULT; | |
207 | } | |
208 | ||
46eeb521 DW |
209 | static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) |
210 | { | |
211 | return ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK; | |
212 | } | |
213 | ||
1da177e4 LT |
214 | /* |
215 | * In-core inode flags. | |
216 | */ | |
474fce06 CH |
217 | #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ |
218 | #define XFS_ISTALE (1 << 1) /* inode has been staled */ | |
219 | #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ | |
220 | #define XFS_INEW (1 << 3) /* inode has just been allocated */ | |
474fce06 CH |
221 | #define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ |
222 | #define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ | |
223 | #define __XFS_IFLOCK_BIT 7 /* inode is being flushed right now */ | |
224 | #define XFS_IFLOCK (1 << __XFS_IFLOCK_BIT) | |
f392e631 CH |
225 | #define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ |
226 | #define XFS_IPINNED (1 << __XFS_IPINNED_BIT) | |
5132ba8f | 227 | #define XFS_IDONTCACHE (1 << 9) /* don't cache the inode long term */ |
85a6e764 | 228 | #define XFS_IEOFBLOCKS (1 << 10)/* has the preallocblocks tag set */ |
17c12bcd DW |
229 | /* |
230 | * If this unlinked inode is in the middle of recovery, don't let drop_inode | |
231 | * truncate and free the inode. This can happen if we iget the inode during | |
232 | * log recovery to replay a bmap operation on the inode. | |
233 | */ | |
234 | #define XFS_IRECOVERY (1 << 11) | |
1da177e4 | 235 | |
778e24bb DC |
236 | /* |
237 | * Per-lifetime flags need to be reset when re-using a reclaimable inode during | |
5132ba8f | 238 | * inode lookup. This prevents unintended behaviour on the new inode from |
778e24bb DC |
239 | * ocurring. |
240 | */ | |
241 | #define XFS_IRECLAIM_RESET_FLAGS \ | |
242 | (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ | |
f37211c3 | 243 | XFS_IDIRTY_RELEASE | XFS_ITRUNCATED) |
778e24bb | 244 | |
474fce06 CH |
245 | /* |
246 | * Synchronize processes attempting to flush the in-core inode back to disk. | |
247 | */ | |
248 | ||
98efe8af BF |
249 | static inline int xfs_isiflocked(struct xfs_inode *ip) |
250 | { | |
251 | return xfs_iflags_test(ip, XFS_IFLOCK); | |
252 | } | |
253 | ||
474fce06 CH |
254 | extern void __xfs_iflock(struct xfs_inode *ip); |
255 | ||
256 | static inline int xfs_iflock_nowait(struct xfs_inode *ip) | |
257 | { | |
258 | return !xfs_iflags_test_and_set(ip, XFS_IFLOCK); | |
259 | } | |
260 | ||
261 | static inline void xfs_iflock(struct xfs_inode *ip) | |
262 | { | |
263 | if (!xfs_iflock_nowait(ip)) | |
264 | __xfs_iflock(ip); | |
265 | } | |
266 | ||
267 | static inline void xfs_ifunlock(struct xfs_inode *ip) | |
268 | { | |
98efe8af | 269 | ASSERT(xfs_isiflocked(ip)); |
474fce06 | 270 | xfs_iflags_clear(ip, XFS_IFLOCK); |
311f08ac | 271 | smp_mb(); |
474fce06 CH |
272 | wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT); |
273 | } | |
274 | ||
1da177e4 LT |
275 | /* |
276 | * Flags for inode locking. | |
f7c66ce3 LM |
277 | * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) |
278 | * 1<<16 - 1<<32-1 -- lockdep annotation (integers) | |
1da177e4 | 279 | */ |
f7c66ce3 LM |
280 | #define XFS_IOLOCK_EXCL (1<<0) |
281 | #define XFS_IOLOCK_SHARED (1<<1) | |
282 | #define XFS_ILOCK_EXCL (1<<2) | |
283 | #define XFS_ILOCK_SHARED (1<<3) | |
653c60b6 DC |
284 | #define XFS_MMAPLOCK_EXCL (1<<4) |
285 | #define XFS_MMAPLOCK_SHARED (1<<5) | |
1da177e4 | 286 | |
f7c66ce3 | 287 | #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ |
653c60b6 DC |
288 | | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ |
289 | | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED) | |
f7c66ce3 | 290 | |
0b1b213f CH |
291 | #define XFS_LOCK_FLAGS \ |
292 | { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ | |
293 | { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ | |
294 | { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ | |
653c60b6 DC |
295 | { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ |
296 | { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \ | |
297 | { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" } | |
0b1b213f CH |
298 | |
299 | ||
f7c66ce3 LM |
300 | /* |
301 | * Flags for lockdep annotations. | |
302 | * | |
9681153b | 303 | * XFS_LOCK_PARENT - for directory operations that require locking a |
0952c818 DC |
304 | * parent directory inode and a child entry inode. IOLOCK requires nesting, |
305 | * MMAPLOCK does not support this class, ILOCK requires a single subclass | |
306 | * to differentiate parent from child. | |
9681153b CH |
307 | * |
308 | * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary | |
309 | * inodes do not participate in the normal lock order, and thus have their | |
310 | * own subclasses. | |
f7c66ce3 | 311 | * |
0f1145cc | 312 | * XFS_LOCK_INUMORDER - for locking several inodes at the some time |
f7c66ce3 LM |
313 | * with xfs_lock_inodes(). This flag is used as the starting subclass |
314 | * and each subsequent lock acquired will increment the subclass by one. | |
0952c818 DC |
315 | * However, MAX_LOCKDEP_SUBCLASSES == 8, which means we are greatly |
316 | * limited to the subclasses we can represent via nesting. We need at least | |
317 | * 5 inodes nest depth for the ILOCK through rename, and we also have to support | |
318 | * XFS_ILOCK_PARENT, which gives 6 subclasses. Then we have XFS_ILOCK_RTBITMAP | |
319 | * and XFS_ILOCK_RTSUM, which are another 2 unique subclasses, so that's all | |
320 | * 8 subclasses supported by lockdep. | |
321 | * | |
322 | * This also means we have to number the sub-classes in the lowest bits of | |
323 | * the mask we keep, and we have to ensure we never exceed 3 bits of lockdep | |
324 | * mask and we can't use bit-masking to build the subclasses. What a mess. | |
325 | * | |
326 | * Bit layout: | |
327 | * | |
328 | * Bit Lock Region | |
329 | * 16-19 XFS_IOLOCK_SHIFT dependencies | |
330 | * 20-23 XFS_MMAPLOCK_SHIFT dependencies | |
331 | * 24-31 XFS_ILOCK_SHIFT dependencies | |
332 | * | |
333 | * IOLOCK values | |
334 | * | |
335 | * 0-3 subclass value | |
336 | * 4-7 PARENT subclass values | |
337 | * | |
338 | * MMAPLOCK values | |
339 | * | |
340 | * 0-3 subclass value | |
341 | * 4-7 unused | |
342 | * | |
343 | * ILOCK values | |
344 | * 0-4 subclass values | |
345 | * 5 PARENT subclass (not nestable) | |
346 | * 6 RTBITMAP subclass (not nestable) | |
347 | * 7 RTSUM subclass (not nestable) | |
348 | * | |
f7c66ce3 | 349 | */ |
0952c818 DC |
350 | #define XFS_IOLOCK_SHIFT 16 |
351 | #define XFS_IOLOCK_PARENT_VAL 4 | |
352 | #define XFS_IOLOCK_MAX_SUBCLASS (XFS_IOLOCK_PARENT_VAL - 1) | |
353 | #define XFS_IOLOCK_DEP_MASK 0x000f0000 | |
354 | #define XFS_IOLOCK_PARENT (XFS_IOLOCK_PARENT_VAL << XFS_IOLOCK_SHIFT) | |
355 | ||
356 | #define XFS_MMAPLOCK_SHIFT 20 | |
357 | #define XFS_MMAPLOCK_NUMORDER 0 | |
358 | #define XFS_MMAPLOCK_MAX_SUBCLASS 3 | |
359 | #define XFS_MMAPLOCK_DEP_MASK 0x00f00000 | |
360 | ||
361 | #define XFS_ILOCK_SHIFT 24 | |
362 | #define XFS_ILOCK_PARENT_VAL 5 | |
363 | #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) | |
364 | #define XFS_ILOCK_RTBITMAP_VAL 6 | |
365 | #define XFS_ILOCK_RTSUM_VAL 7 | |
366 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
367 | #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) | |
368 | #define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) | |
369 | #define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) | |
370 | ||
371 | #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ | |
653c60b6 DC |
372 | XFS_MMAPLOCK_DEP_MASK | \ |
373 | XFS_ILOCK_DEP_MASK) | |
374 | ||
375 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ | |
376 | >> XFS_IOLOCK_SHIFT) | |
377 | #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ | |
378 | >> XFS_MMAPLOCK_SHIFT) | |
379 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ | |
380 | >> XFS_ILOCK_SHIFT) | |
1da177e4 | 381 | |
1da177e4 LT |
382 | /* |
383 | * For multiple groups support: if S_ISGID bit is set in the parent | |
384 | * directory, group of new file is set to that of the parent, and | |
385 | * new subdirectory gets S_ISGID bit from parent. | |
386 | */ | |
bd186aa9 CH |
387 | #define XFS_INHERIT_GID(pip) \ |
388 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ | |
c19b3b05 | 389 | (VFS_I(pip)->i_mode & S_ISGID)) |
1da177e4 | 390 | |
c24b5dfa | 391 | int xfs_release(struct xfs_inode *ip); |
74564fb4 | 392 | void xfs_inactive(struct xfs_inode *ip); |
c24b5dfa DC |
393 | int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, |
394 | struct xfs_inode **ipp, struct xfs_name *ci_name); | |
395 | int xfs_create(struct xfs_inode *dp, struct xfs_name *name, | |
396 | umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp); | |
99b6436b | 397 | int xfs_create_tmpfile(struct xfs_inode *dp, struct dentry *dentry, |
330033d6 | 398 | umode_t mode, struct xfs_inode **ipp); |
c24b5dfa DC |
399 | int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, |
400 | struct xfs_inode *ip); | |
401 | int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, | |
402 | struct xfs_name *target_name); | |
403 | int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, | |
404 | struct xfs_inode *src_ip, struct xfs_inode *target_dp, | |
405 | struct xfs_name *target_name, | |
d31a1825 | 406 | struct xfs_inode *target_ip, unsigned int flags); |
c24b5dfa | 407 | |
1da177e4 LT |
408 | void xfs_ilock(xfs_inode_t *, uint); |
409 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
410 | void xfs_iunlock(xfs_inode_t *, uint); | |
411 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
579aa9ca | 412 | int xfs_isilocked(xfs_inode_t *, uint); |
309ecac8 | 413 | uint xfs_ilock_data_map_shared(struct xfs_inode *); |
efa70be1 | 414 | uint xfs_ilock_attr_map_shared(struct xfs_inode *); |
347d1c01 | 415 | |
1da177e4 | 416 | uint xfs_ip2xflags(struct xfs_inode *); |
1da177e4 | 417 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
310a75a3 | 418 | struct xfs_defer_ops *); |
8f04c47a CH |
419 | int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, |
420 | int, xfs_fsize_t); | |
1da177e4 | 421 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
1fd7115e | 422 | |
777df5af | 423 | void xfs_iunpin_wait(xfs_inode_t *); |
1fd7115e DC |
424 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
425 | ||
4c46819a | 426 | int xfs_iflush(struct xfs_inode *, struct xfs_buf **); |
e1cccd91 | 427 | void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); |
1da177e4 | 428 | |
2a0ec1d9 | 429 | xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); |
f7ca3522 | 430 | xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip); |
2a0ec1d9 | 431 | |
e546cb79 DC |
432 | int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, |
433 | xfs_nlink_t, xfs_dev_t, prid_t, int, | |
434 | struct xfs_inode **, int *); | |
e546cb79 | 435 | |
c24b5dfa | 436 | /* from xfs_file.c */ |
8add71ca CH |
437 | enum xfs_prealloc_flags { |
438 | XFS_PREALLOC_SET = (1 << 1), | |
439 | XFS_PREALLOC_CLEAR = (1 << 2), | |
440 | XFS_PREALLOC_SYNC = (1 << 3), | |
441 | XFS_PREALLOC_INVISIBLE = (1 << 4), | |
442 | }; | |
443 | ||
5885ebda DC |
444 | int xfs_update_prealloc_flags(struct xfs_inode *ip, |
445 | enum xfs_prealloc_flags flags); | |
446 | int xfs_zero_eof(struct xfs_inode *ip, xfs_off_t offset, | |
447 | xfs_fsize_t isize, bool *did_zeroing); | |
7bb41db3 CH |
448 | int xfs_zero_range(struct xfs_inode *ip, xfs_off_t pos, xfs_off_t count, |
449 | bool *did_zero); | |
8aa7d37e ES |
450 | loff_t __xfs_seek_hole_data(struct inode *inode, loff_t start, |
451 | loff_t eof, int whence); | |
c24b5dfa DC |
452 | |
453 | ||
58c90473 | 454 | /* from xfs_iops.c */ |
2b3d1d41 CH |
455 | extern void xfs_setup_inode(struct xfs_inode *ip); |
456 | extern void xfs_setup_iops(struct xfs_inode *ip); | |
457 | ||
58c90473 DC |
458 | /* |
459 | * When setting up a newly allocated inode, we need to call | |
460 | * xfs_finish_inode_setup() once the inode is fully instantiated at | |
461 | * the VFS level to prevent the rest of the world seeing the inode | |
462 | * before we've completed instantiation. Otherwise we can do it | |
463 | * the moment the inode lookup is complete. | |
464 | */ | |
58c90473 DC |
465 | static inline void xfs_finish_inode_setup(struct xfs_inode *ip) |
466 | { | |
467 | xfs_iflags_clear(ip, XFS_INEW); | |
468 | barrier(); | |
469 | unlock_new_inode(VFS_I(ip)); | |
470 | } | |
471 | ||
472 | static inline void xfs_setup_existing_inode(struct xfs_inode *ip) | |
473 | { | |
474 | xfs_setup_inode(ip); | |
2b3d1d41 | 475 | xfs_setup_iops(ip); |
58c90473 DC |
476 | xfs_finish_inode_setup(ip); |
477 | } | |
478 | ||
5a8d0f3c CH |
479 | #define IHOLD(ip) \ |
480 | do { \ | |
481 | ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ | |
7de9c6ee | 482 | ihold(VFS_I(ip)); \ |
0b1b213f | 483 | trace_xfs_ihold(ip, _THIS_IP_); \ |
5a8d0f3c CH |
484 | } while (0) |
485 | ||
486 | #define IRELE(ip) \ | |
487 | do { \ | |
0b1b213f | 488 | trace_xfs_irele(ip, _THIS_IP_); \ |
5a8d0f3c CH |
489 | iput(VFS_I(ip)); \ |
490 | } while (0) | |
491 | ||
1da177e4 | 492 | extern struct kmem_zone *xfs_inode_zone; |
1da177e4 | 493 | |
e153aa79 DW |
494 | /* The default CoW extent size hint. */ |
495 | #define XFS_DEFAULT_COWEXTSZ_HINT 32 | |
496 | ||
1da177e4 | 497 | #endif /* __XFS_INODE_H__ */ |