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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 */ | |
50 | xfs_ifork_t i_df; /* data fork */ | |
51 | ||
32c5483a DC |
52 | /* operations vectors */ |
53 | const struct xfs_dir_ops *d_ops; /* directory ops vector */ | |
54 | ||
1da177e4 | 55 | /* Transaction and locking information. */ |
1da177e4 LT |
56 | struct xfs_inode_log_item *i_itemp; /* logging information */ |
57 | mrlock_t i_lock; /* inode lock */ | |
58 | mrlock_t i_iolock; /* inode IO 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 | |
bf904248 DC |
68 | /* VFS inode */ |
69 | struct inode i_vnode; /* embedded VFS inode */ | |
1da177e4 LT |
70 | } xfs_inode_t; |
71 | ||
01651646 DC |
72 | /* Convert from vfs inode to xfs inode */ |
73 | static inline struct xfs_inode *XFS_I(struct inode *inode) | |
74 | { | |
bf904248 | 75 | return container_of(inode, struct xfs_inode, i_vnode); |
01651646 DC |
76 | } |
77 | ||
01651646 DC |
78 | /* convert from xfs inode to vfs inode */ |
79 | static inline struct inode *VFS_I(struct xfs_inode *ip) | |
80 | { | |
bf904248 | 81 | return &ip->i_vnode; |
01651646 | 82 | } |
01651646 | 83 | |
ce7ae151 CH |
84 | /* |
85 | * For regular files we only update the on-disk filesize when actually | |
86 | * writing data back to disk. Until then only the copy in the VFS inode | |
87 | * is uptodate. | |
88 | */ | |
89 | static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) | |
90 | { | |
c19b3b05 | 91 | if (S_ISREG(VFS_I(ip)->i_mode)) |
ce7ae151 CH |
92 | return i_size_read(VFS_I(ip)); |
93 | return ip->i_d.di_size; | |
94 | } | |
95 | ||
6923e686 CH |
96 | /* |
97 | * If this I/O goes past the on-disk inode size update it unless it would | |
98 | * be past the current in-core inode size. | |
99 | */ | |
100 | static inline xfs_fsize_t | |
101 | xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) | |
102 | { | |
103 | xfs_fsize_t i_size = i_size_read(VFS_I(ip)); | |
104 | ||
ce57bcf6 | 105 | if (new_size > i_size || new_size < 0) |
6923e686 CH |
106 | new_size = i_size; |
107 | return new_size > ip->i_d.di_size ? new_size : 0; | |
108 | } | |
109 | ||
7a18c386 DC |
110 | /* |
111 | * i_flags helper functions | |
112 | */ | |
113 | static inline void | |
114 | __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
115 | { | |
116 | ip->i_flags |= flags; | |
117 | } | |
118 | ||
119 | static inline void | |
120 | xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) | |
121 | { | |
122 | spin_lock(&ip->i_flags_lock); | |
123 | __xfs_iflags_set(ip, flags); | |
124 | spin_unlock(&ip->i_flags_lock); | |
125 | } | |
126 | ||
127 | static inline void | |
128 | xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) | |
129 | { | |
130 | spin_lock(&ip->i_flags_lock); | |
131 | ip->i_flags &= ~flags; | |
132 | spin_unlock(&ip->i_flags_lock); | |
133 | } | |
134 | ||
135 | static inline int | |
136 | __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
137 | { | |
138 | return (ip->i_flags & flags); | |
139 | } | |
140 | ||
141 | static inline int | |
142 | xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) | |
143 | { | |
144 | int ret; | |
145 | spin_lock(&ip->i_flags_lock); | |
146 | ret = __xfs_iflags_test(ip, flags); | |
147 | spin_unlock(&ip->i_flags_lock); | |
148 | return ret; | |
149 | } | |
09262b43 CH |
150 | |
151 | static inline int | |
152 | xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) | |
153 | { | |
154 | int ret; | |
155 | ||
156 | spin_lock(&ip->i_flags_lock); | |
157 | ret = ip->i_flags & flags; | |
158 | if (ret) | |
159 | ip->i_flags &= ~flags; | |
160 | spin_unlock(&ip->i_flags_lock); | |
161 | return ret; | |
162 | } | |
1da177e4 | 163 | |
474fce06 CH |
164 | static inline int |
165 | xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags) | |
166 | { | |
167 | int ret; | |
168 | ||
169 | spin_lock(&ip->i_flags_lock); | |
170 | ret = ip->i_flags & flags; | |
171 | if (!ret) | |
172 | ip->i_flags |= flags; | |
173 | spin_unlock(&ip->i_flags_lock); | |
174 | return ret; | |
175 | } | |
176 | ||
6743099c AM |
177 | /* |
178 | * Project quota id helpers (previously projid was 16bit only | |
25985edc | 179 | * and using two 16bit values to hold new 32bit projid was chosen |
6743099c AM |
180 | * to retain compatibility with "old" filesystems). |
181 | */ | |
182 | static inline prid_t | |
183 | xfs_get_projid(struct xfs_inode *ip) | |
184 | { | |
185 | return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; | |
186 | } | |
187 | ||
188 | static inline void | |
189 | xfs_set_projid(struct xfs_inode *ip, | |
190 | prid_t projid) | |
191 | { | |
192 | ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16); | |
193 | ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff); | |
194 | } | |
195 | ||
163467d3 ZYW |
196 | static inline prid_t |
197 | xfs_get_initial_prid(struct xfs_inode *dp) | |
198 | { | |
199 | if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) | |
200 | return xfs_get_projid(dp); | |
201 | ||
202 | return XFS_PROJID_DEFAULT; | |
203 | } | |
204 | ||
46eeb521 DW |
205 | static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) |
206 | { | |
207 | return ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK; | |
208 | } | |
209 | ||
1da177e4 LT |
210 | /* |
211 | * In-core inode flags. | |
212 | */ | |
474fce06 CH |
213 | #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ |
214 | #define XFS_ISTALE (1 << 1) /* inode has been staled */ | |
215 | #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ | |
216 | #define XFS_INEW (1 << 3) /* inode has just been allocated */ | |
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 */ |
1da177e4 | 225 | |
778e24bb DC |
226 | /* |
227 | * Per-lifetime flags need to be reset when re-using a reclaimable inode during | |
5132ba8f | 228 | * inode lookup. This prevents unintended behaviour on the new inode from |
778e24bb DC |
229 | * ocurring. |
230 | */ | |
231 | #define XFS_IRECLAIM_RESET_FLAGS \ | |
232 | (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ | |
f37211c3 | 233 | XFS_IDIRTY_RELEASE | XFS_ITRUNCATED) |
778e24bb | 234 | |
474fce06 CH |
235 | /* |
236 | * Synchronize processes attempting to flush the in-core inode back to disk. | |
237 | */ | |
238 | ||
239 | extern void __xfs_iflock(struct xfs_inode *ip); | |
240 | ||
241 | static inline int xfs_iflock_nowait(struct xfs_inode *ip) | |
242 | { | |
243 | return !xfs_iflags_test_and_set(ip, XFS_IFLOCK); | |
244 | } | |
245 | ||
246 | static inline void xfs_iflock(struct xfs_inode *ip) | |
247 | { | |
248 | if (!xfs_iflock_nowait(ip)) | |
249 | __xfs_iflock(ip); | |
250 | } | |
251 | ||
252 | static inline void xfs_ifunlock(struct xfs_inode *ip) | |
253 | { | |
254 | xfs_iflags_clear(ip, XFS_IFLOCK); | |
311f08ac | 255 | smp_mb(); |
474fce06 CH |
256 | wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT); |
257 | } | |
258 | ||
259 | static inline int xfs_isiflocked(struct xfs_inode *ip) | |
260 | { | |
261 | return xfs_iflags_test(ip, XFS_IFLOCK); | |
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 | |
325 | * 4-7 PARENT subclass values | |
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 DC |
339 | #define XFS_IOLOCK_SHIFT 16 |
340 | #define XFS_IOLOCK_PARENT_VAL 4 | |
341 | #define XFS_IOLOCK_MAX_SUBCLASS (XFS_IOLOCK_PARENT_VAL - 1) | |
342 | #define XFS_IOLOCK_DEP_MASK 0x000f0000 | |
343 | #define XFS_IOLOCK_PARENT (XFS_IOLOCK_PARENT_VAL << XFS_IOLOCK_SHIFT) | |
344 | ||
345 | #define XFS_MMAPLOCK_SHIFT 20 | |
346 | #define XFS_MMAPLOCK_NUMORDER 0 | |
347 | #define XFS_MMAPLOCK_MAX_SUBCLASS 3 | |
348 | #define XFS_MMAPLOCK_DEP_MASK 0x00f00000 | |
349 | ||
350 | #define XFS_ILOCK_SHIFT 24 | |
351 | #define XFS_ILOCK_PARENT_VAL 5 | |
352 | #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) | |
353 | #define XFS_ILOCK_RTBITMAP_VAL 6 | |
354 | #define XFS_ILOCK_RTSUM_VAL 7 | |
355 | #define XFS_ILOCK_DEP_MASK 0xff000000 | |
356 | #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) | |
357 | #define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) | |
358 | #define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) | |
359 | ||
360 | #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ | |
653c60b6 DC |
361 | XFS_MMAPLOCK_DEP_MASK | \ |
362 | XFS_ILOCK_DEP_MASK) | |
363 | ||
364 | #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ | |
365 | >> XFS_IOLOCK_SHIFT) | |
366 | #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ | |
367 | >> XFS_MMAPLOCK_SHIFT) | |
368 | #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ | |
369 | >> XFS_ILOCK_SHIFT) | |
1da177e4 | 370 | |
1da177e4 LT |
371 | /* |
372 | * For multiple groups support: if S_ISGID bit is set in the parent | |
373 | * directory, group of new file is set to that of the parent, and | |
374 | * new subdirectory gets S_ISGID bit from parent. | |
375 | */ | |
bd186aa9 CH |
376 | #define XFS_INHERIT_GID(pip) \ |
377 | (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ | |
c19b3b05 | 378 | (VFS_I(pip)->i_mode & S_ISGID)) |
1da177e4 | 379 | |
c24b5dfa | 380 | int xfs_release(struct xfs_inode *ip); |
74564fb4 | 381 | void xfs_inactive(struct xfs_inode *ip); |
c24b5dfa DC |
382 | int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, |
383 | struct xfs_inode **ipp, struct xfs_name *ci_name); | |
384 | int xfs_create(struct xfs_inode *dp, struct xfs_name *name, | |
385 | umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp); | |
99b6436b | 386 | int xfs_create_tmpfile(struct xfs_inode *dp, struct dentry *dentry, |
330033d6 | 387 | umode_t mode, struct xfs_inode **ipp); |
c24b5dfa DC |
388 | int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, |
389 | struct xfs_inode *ip); | |
390 | int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, | |
391 | struct xfs_name *target_name); | |
392 | int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, | |
393 | struct xfs_inode *src_ip, struct xfs_inode *target_dp, | |
394 | struct xfs_name *target_name, | |
d31a1825 | 395 | struct xfs_inode *target_ip, unsigned int flags); |
c24b5dfa | 396 | |
1da177e4 LT |
397 | void xfs_ilock(xfs_inode_t *, uint); |
398 | int xfs_ilock_nowait(xfs_inode_t *, uint); | |
399 | void xfs_iunlock(xfs_inode_t *, uint); | |
400 | void xfs_ilock_demote(xfs_inode_t *, uint); | |
579aa9ca | 401 | int xfs_isilocked(xfs_inode_t *, uint); |
309ecac8 | 402 | uint xfs_ilock_data_map_shared(struct xfs_inode *); |
efa70be1 | 403 | uint xfs_ilock_attr_map_shared(struct xfs_inode *); |
347d1c01 | 404 | |
1da177e4 | 405 | uint xfs_ip2xflags(struct xfs_inode *); |
1da177e4 | 406 | int xfs_ifree(struct xfs_trans *, xfs_inode_t *, |
310a75a3 | 407 | struct xfs_defer_ops *); |
8f04c47a CH |
408 | int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, |
409 | int, xfs_fsize_t); | |
1da177e4 | 410 | void xfs_iext_realloc(xfs_inode_t *, int, int); |
1fd7115e | 411 | |
777df5af | 412 | void xfs_iunpin_wait(xfs_inode_t *); |
1fd7115e DC |
413 | #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) |
414 | ||
4c46819a | 415 | int xfs_iflush(struct xfs_inode *, struct xfs_buf **); |
e1cccd91 | 416 | void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); |
1da177e4 | 417 | |
2a0ec1d9 DC |
418 | xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); |
419 | ||
e546cb79 DC |
420 | int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, |
421 | xfs_nlink_t, xfs_dev_t, prid_t, int, | |
422 | struct xfs_inode **, int *); | |
e546cb79 | 423 | |
c24b5dfa | 424 | /* from xfs_file.c */ |
8add71ca CH |
425 | enum xfs_prealloc_flags { |
426 | XFS_PREALLOC_SET = (1 << 1), | |
427 | XFS_PREALLOC_CLEAR = (1 << 2), | |
428 | XFS_PREALLOC_SYNC = (1 << 3), | |
429 | XFS_PREALLOC_INVISIBLE = (1 << 4), | |
430 | }; | |
431 | ||
5885ebda DC |
432 | int xfs_update_prealloc_flags(struct xfs_inode *ip, |
433 | enum xfs_prealloc_flags flags); | |
434 | int xfs_zero_eof(struct xfs_inode *ip, xfs_off_t offset, | |
435 | xfs_fsize_t isize, bool *did_zeroing); | |
7bb41db3 CH |
436 | int xfs_zero_range(struct xfs_inode *ip, xfs_off_t pos, xfs_off_t count, |
437 | bool *did_zero); | |
8aa7d37e ES |
438 | loff_t __xfs_seek_hole_data(struct inode *inode, loff_t start, |
439 | loff_t eof, int whence); | |
c24b5dfa DC |
440 | |
441 | ||
58c90473 | 442 | /* from xfs_iops.c */ |
2b3d1d41 CH |
443 | extern void xfs_setup_inode(struct xfs_inode *ip); |
444 | extern void xfs_setup_iops(struct xfs_inode *ip); | |
445 | ||
58c90473 DC |
446 | /* |
447 | * When setting up a newly allocated inode, we need to call | |
448 | * xfs_finish_inode_setup() once the inode is fully instantiated at | |
449 | * the VFS level to prevent the rest of the world seeing the inode | |
450 | * before we've completed instantiation. Otherwise we can do it | |
451 | * the moment the inode lookup is complete. | |
452 | */ | |
58c90473 DC |
453 | static inline void xfs_finish_inode_setup(struct xfs_inode *ip) |
454 | { | |
455 | xfs_iflags_clear(ip, XFS_INEW); | |
456 | barrier(); | |
457 | unlock_new_inode(VFS_I(ip)); | |
458 | } | |
459 | ||
460 | static inline void xfs_setup_existing_inode(struct xfs_inode *ip) | |
461 | { | |
462 | xfs_setup_inode(ip); | |
2b3d1d41 | 463 | xfs_setup_iops(ip); |
58c90473 DC |
464 | xfs_finish_inode_setup(ip); |
465 | } | |
466 | ||
5a8d0f3c CH |
467 | #define IHOLD(ip) \ |
468 | do { \ | |
469 | ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ | |
7de9c6ee | 470 | ihold(VFS_I(ip)); \ |
0b1b213f | 471 | trace_xfs_ihold(ip, _THIS_IP_); \ |
5a8d0f3c CH |
472 | } while (0) |
473 | ||
474 | #define IRELE(ip) \ | |
475 | do { \ | |
0b1b213f | 476 | trace_xfs_irele(ip, _THIS_IP_); \ |
5a8d0f3c CH |
477 | iput(VFS_I(ip)); \ |
478 | } while (0) | |
479 | ||
1da177e4 | 480 | extern struct kmem_zone *xfs_inode_zone; |
1da177e4 | 481 | |
1da177e4 | 482 | #endif /* __XFS_INODE_H__ */ |