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 */ | |
653c60b6 | 59 | mrlock_t i_mmaplock; /* inode mmap IO lock */ |
1da177e4 | 60 | atomic_t i_pincount; /* inode pin count */ |
f273ab84 | 61 | spinlock_t i_flags_lock; /* inode i_flags lock */ |
1da177e4 | 62 | /* Miscellaneous state. */ |
49e4c70e | 63 | unsigned long i_flags; /* see defined flags below */ |
1da177e4 LT |
64 | unsigned int i_delayed_blks; /* count of delay alloc blks */ |
65 | ||
f8d55aa0 | 66 | struct xfs_icdinode i_d; /* most of ondisk inode */ |
1da177e4 | 67 | |
3993baeb DW |
68 | xfs_extnum_t i_cnextents; /* # of extents in cow fork */ |
69 | unsigned int i_cformat; /* format of cow fork */ | |
70 | ||
bf904248 DC |
71 | /* VFS inode */ |
72 | struct inode i_vnode; /* embedded VFS inode */ | |
1da177e4 LT |
73 | } xfs_inode_t; |
74 | ||
01651646 DC |
75 | /* Convert from vfs inode to xfs inode */ |
76 | static inline struct xfs_inode *XFS_I(struct inode *inode) | |
77 | { | |
bf904248 | 78 | return container_of(inode, struct xfs_inode, i_vnode); |
01651646 DC |
79 | } |
80 | ||
01651646 DC |
81 | /* convert from xfs inode to vfs inode */ |
82 | static inline struct inode *VFS_I(struct xfs_inode *ip) | |
83 | { | |
bf904248 | 84 | return &ip->i_vnode; |
01651646 | 85 | } |
01651646 | 86 | |
ce7ae151 CH |
87 | /* |
88 | * For regular files we only update the on-disk filesize when actually | |
89 | * writing data back to disk. Until then only the copy in the VFS inode | |
90 | * is uptodate. | |
91 | */ | |
92 | static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) | |
93 | { | |
c19b3b05 | 94 | if (S_ISREG(VFS_I(ip)->i_mode)) |
ce7ae151 CH |
95 | return i_size_read(VFS_I(ip)); |
96 | return ip->i_d.di_size; | |
97 | } | |
98 | ||
6923e686 CH |
99 | /* |
100 | * If this I/O goes past the on-disk inode size update it unless it would | |
101 | * be past the current in-core inode size. | |
102 | */ | |
103 | static inline xfs_fsize_t | |
104 | xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) | |
105 | { | |
106 | xfs_fsize_t i_size = i_size_read(VFS_I(ip)); | |
107 | ||
ce57bcf6 | 108 | if (new_size > i_size || new_size < 0) |
6923e686 CH |
109 | new_size = i_size; |
110 | return new_size > ip->i_d.di_size ? new_size : 0; | |
111 | } | |
112 | ||
7a18c386 DC |
113 | /* |
114 | * i_flags helper functions | |
115 | */ | |
116 | static inline void | |
117 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
118 | { | |
119 | ip->i_flags |= flags; | |
120 | } | |
121 | ||
122 | static inline void | |
123 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
124 | { | |
125 | spin_lock(&ip->i_flags_lock); | |
126 | __xfs_iflags_set(ip, flags); | |
127 | spin_unlock(&ip->i_flags_lock); | |
128 | } | |
129 | ||
130 | static inline void | |
131 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
132 | { | |
133 | spin_lock(&ip->i_flags_lock); | |
134 | ip->i_flags &= ~flags; | |
135 | spin_unlock(&ip->i_flags_lock); | |
136 | } | |
137 | ||
138 | static inline int | |
139 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
140 | { | |
141 | return (ip->i_flags & flags); | |
142 | } | |
143 | ||
144 | static inline int | |
145 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
146 | { | |
147 | int ret; | |
148 | spin_lock(&ip->i_flags_lock); | |
149 | ret = __xfs_iflags_test(ip, flags); | |
150 | spin_unlock(&ip->i_flags_lock); | |
151 | return ret; | |
152 | } | |
09262b43 CH |
153 | |
154 | static inline int | |
155 | xfs_iflags_test_and_clear(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 | } | |
1da177e4 | 166 | |
474fce06 CH |
167 | static inline int |
168 | xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) | |
169 | { | |
170 | int ret; | |
171 | ||
172 | spin_lock(&ip->i_flags_lock); | |
173 | ret = ip->i_flags & flags; | |
174 | if (!ret) | |
175 | ip->i_flags |= flags; | |
176 | spin_unlock(&ip->i_flags_lock); | |
177 | return ret; | |
178 | } | |
179 | ||
6743099c AM |
180 | /* |
181 | * Project quota id helpers (previously projid was 16bit only | |
25985edc | 182 | * and using two 16bit values to hold new 32bit projid was chosen |
6743099c AM |
183 | * to retain compatibility with "old" filesystems). |
184 | */ | |
185 | static inline prid_t | |
186 | xfs_get_projid(struct xfs_inode *ip) | |
187 | { | |
188 | return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; | |
189 | } | |
190 | ||
191 | static inline void | |
192 | xfs_set_projid(struct xfs_inode *ip, | |
193 | prid_t projid) | |
194 | { | |
c8ce540d DW |
195 | ip->i_d.di_projid_hi = (uint16_t) (projid >> 16); |
196 | ip->i_d.di_projid_lo = (uint16_t) (projid & 0xffff); | |
6743099c AM |
197 | } |
198 | ||
163467d3 ZYW |
199 | static inline prid_t |
200 | xfs_get_initial_prid(struct xfs_inode *dp) | |
201 | { | |
202 | if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) | |
203 | return xfs_get_projid(dp); | |
204 | ||
205 | return XFS_PROJID_DEFAULT; | |
206 | } | |
207 | ||
46eeb521 DW |
208 | static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) |
209 | { | |
210 | return ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK; | |
211 | } | |
212 | ||
1da177e4 LT |
213 | /* |
214 | * In-core inode flags. | |
215 | */ | |
474fce06 CH |
216 | #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ |
217 | #define XFS_ISTALE (1 << 1) /* inode has been staled */ | |
218 | #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ | |
756baca2 BF |
219 | #define __XFS_INEW_BIT 3 /* inode has just been allocated */ |
220 | #define XFS_INEW (1 << __XFS_INEW_BIT) | |
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 | |
65523218 | 336 | * 4-7 unused |
0952c818 DC |
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 | 350 | #define XFS_IOLOCK_SHIFT 16 |
65523218 | 351 | #define XFS_IOLOCK_MAX_SUBCLASS 3 |
0952c818 | 352 | #define XFS_IOLOCK_DEP_MASK 0x000f0000 |
0952c818 DC |
353 | |
354 | #define XFS_MMAPLOCK_SHIFT 20 | |
355 | #define XFS_MMAPLOCK_NUMORDER 0 | |
356 | #define XFS_MMAPLOCK_MAX_SUBCLASS 3 | |
357 | #define XFS_MMAPLOCK_DEP_MASK 0x00f00000 | |
358 | ||
359 | #define XFS_ILOCK_SHIFT 24 | |
360 | #define XFS_ILOCK_PARENT_VAL 5 | |
361 | #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) | |
362 | #define XFS_ILOCK_RTBITMAP_VAL 6 | |
363 | #define XFS_ILOCK_RTSUM_VAL 7 | |
364 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
365 | #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) | |
366 | #define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) | |
367 | #define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) | |
368 | ||
369 | #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ | |
653c60b6 DC |
370 | XFS_MMAPLOCK_DEP_MASK | \ |
371 | XFS_ILOCK_DEP_MASK) | |
372 | ||
373 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ | |
374 | >> XFS_IOLOCK_SHIFT) | |
375 | #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ | |
376 | >> XFS_MMAPLOCK_SHIFT) | |
377 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ | |
378 | >> XFS_ILOCK_SHIFT) | |
1da177e4 | 379 | |
1da177e4 LT |
380 | /* |
381 | * For multiple groups support: if S_ISGID bit is set in the parent | |
382 | * directory, group of new file is set to that of the parent, and | |
383 | * new subdirectory gets S_ISGID bit from parent. | |
384 | */ | |
bd186aa9 CH |
385 | #define XFS_INHERIT_GID(pip) \ |
386 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ | |
c19b3b05 | 387 | (VFS_I(pip)->i_mode & S_ISGID)) |
1da177e4 | 388 | |
c24b5dfa | 389 | int xfs_release(struct xfs_inode *ip); |
74564fb4 | 390 | void xfs_inactive(struct xfs_inode *ip); |
c24b5dfa DC |
391 | int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, |
392 | struct xfs_inode **ipp, struct xfs_name *ci_name); | |
393 | int xfs_create(struct xfs_inode *dp, struct xfs_name *name, | |
394 | umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp); | |
99b6436b | 395 | int xfs_create_tmpfile(struct xfs_inode *dp, struct dentry *dentry, |
330033d6 | 396 | umode_t mode, struct xfs_inode **ipp); |
c24b5dfa DC |
397 | int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, |
398 | struct xfs_inode *ip); | |
399 | int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, | |
400 | struct xfs_name *target_name); | |
401 | int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, | |
402 | struct xfs_inode *src_ip, struct xfs_inode *target_dp, | |
403 | struct xfs_name *target_name, | |
d31a1825 | 404 | struct xfs_inode *target_ip, unsigned int flags); |
c24b5dfa | 405 | |
1da177e4 LT |
406 | void xfs_ilock(xfs_inode_t *, uint); |
407 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
408 | void xfs_iunlock(xfs_inode_t *, uint); | |
409 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
579aa9ca | 410 | int xfs_isilocked(xfs_inode_t *, uint); |
309ecac8 | 411 | uint xfs_ilock_data_map_shared(struct xfs_inode *); |
efa70be1 | 412 | uint xfs_ilock_attr_map_shared(struct xfs_inode *); |
347d1c01 | 413 | |
1da177e4 | 414 | uint xfs_ip2xflags(struct xfs_inode *); |
1da177e4 | 415 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
310a75a3 | 416 | struct xfs_defer_ops *); |
8f04c47a CH |
417 | int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, |
418 | int, xfs_fsize_t); | |
1da177e4 | 419 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
1fd7115e | 420 | |
777df5af | 421 | void xfs_iunpin_wait(xfs_inode_t *); |
1fd7115e DC |
422 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
423 | ||
4c46819a | 424 | int xfs_iflush(struct xfs_inode *, struct xfs_buf **); |
e1cccd91 | 425 | void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); |
1da177e4 | 426 | |
2a0ec1d9 | 427 | xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); |
f7ca3522 | 428 | xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip); |
2a0ec1d9 | 429 | |
e546cb79 DC |
430 | int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, |
431 | xfs_nlink_t, xfs_dev_t, prid_t, int, | |
432 | struct xfs_inode **, int *); | |
e546cb79 | 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); | |
444 | int xfs_zero_eof(struct xfs_inode *ip, xfs_off_t offset, | |
445 | xfs_fsize_t isize, bool *did_zeroing); | |
7bb41db3 CH |
446 | int xfs_zero_range(struct xfs_inode *ip, xfs_off_t pos, xfs_off_t count, |
447 | bool *did_zero); | |
c24b5dfa | 448 | |
58c90473 | 449 | /* from xfs_iops.c */ |
2b3d1d41 CH |
450 | extern void xfs_setup_inode(struct xfs_inode *ip); |
451 | extern void xfs_setup_iops(struct xfs_inode *ip); | |
452 | ||
58c90473 DC |
453 | /* |
454 | * When setting up a newly allocated inode, we need to call | |
455 | * xfs_finish_inode_setup() once the inode is fully instantiated at | |
456 | * the VFS level to prevent the rest of the world seeing the inode | |
457 | * before we've completed instantiation. Otherwise we can do it | |
458 | * the moment the inode lookup is complete. | |
459 | */ | |
58c90473 DC |
460 | static inline void xfs_finish_inode_setup(struct xfs_inode *ip) |
461 | { | |
462 | xfs_iflags_clear(ip, XFS_INEW); | |
463 | barrier(); | |
464 | unlock_new_inode(VFS_I(ip)); | |
756baca2 | 465 | wake_up_bit(&ip->i_flags, __XFS_INEW_BIT); |
58c90473 DC |
466 | } |
467 | ||
468 | static inline void xfs_setup_existing_inode(struct xfs_inode *ip) | |
469 | { | |
470 | xfs_setup_inode(ip); | |
2b3d1d41 | 471 | xfs_setup_iops(ip); |
58c90473 DC |
472 | xfs_finish_inode_setup(ip); |
473 | } | |
474 | ||
5a8d0f3c CH |
475 | #define IHOLD(ip) \ |
476 | do { \ | |
477 | ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ | |
7de9c6ee | 478 | ihold(VFS_I(ip)); \ |
0b1b213f | 479 | trace_xfs_ihold(ip, _THIS_IP_); \ |
5a8d0f3c CH |
480 | } while (0) |
481 | ||
482 | #define IRELE(ip) \ | |
483 | do { \ | |
0b1b213f | 484 | trace_xfs_irele(ip, _THIS_IP_); \ |
5a8d0f3c CH |
485 | iput(VFS_I(ip)); \ |
486 | } while (0) | |
487 | ||
1da177e4 | 488 | extern struct kmem_zone *xfs_inode_zone; |
1da177e4 | 489 | |
e153aa79 DW |
490 | /* The default CoW extent size hint. */ |
491 | #define XFS_DEFAULT_COWEXTSZ_HINT 32 | |
492 | ||
1da177e4 | 493 | #endif /* __XFS_INODE_H__ */ |