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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_INODE_H__
19#define __XFS_INODE_H__
20
Christoph Hellwig347d1c02007-08-28 13:57:51 +100021struct xfs_dinode;
22struct xfs_dinode_core;
23
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025/*
Nathan Scotta844f452005-11-02 14:38:42 +110026 * Fork identifiers.
27 */
28#define XFS_DATA_FORK 0
29#define XFS_ATTR_FORK 1
30
31/*
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110032 * The following xfs_ext_irec_t struct introduces a second (top) level
33 * to the in-core extent allocation scheme. These structs are allocated
34 * in a contiguous block, creating an indirection array where each entry
35 * (irec) contains a pointer to a buffer of in-core extent records which
36 * it manages. Each extent buffer is 4k in size, since 4k is the system
37 * page size on Linux i386 and systems with larger page sizes don't seem
38 * to gain much, if anything, by using their native page size as the
39 * extent buffer size. Also, using 4k extent buffers everywhere provides
40 * a consistent interface for CXFS across different platforms.
41 *
42 * There is currently no limit on the number of irec's (extent lists)
43 * allowed, so heavily fragmented files may require an indirection array
44 * which spans multiple system pages of memory. The number of extents
45 * which would require this amount of contiguous memory is very large
46 * and should not cause problems in the foreseeable future. However,
47 * if the memory needed for the contiguous array ever becomes a problem,
48 * it is possible that a third level of indirection may be required.
49 */
50typedef struct xfs_ext_irec {
Christoph Hellwiga6f64d42007-08-16 16:23:40 +100051 xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110052 xfs_extnum_t er_extoff; /* extent offset in file */
53 xfs_extnum_t er_extcount; /* number of extents in page/block */
54} xfs_ext_irec_t;
55
56/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 * File incore extent information, present for each of data & attr forks.
58 */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110059#define XFS_IEXT_BUFSZ 4096
60#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
61#define XFS_INLINE_EXTS 2
62#define XFS_INLINE_DATA 32
Linus Torvalds1da177e2005-04-16 15:20:36 -070063typedef struct xfs_ifork {
64 int if_bytes; /* bytes in if_u1 */
65 int if_real_bytes; /* bytes allocated in if_u1 */
66 xfs_bmbt_block_t *if_broot; /* file's incore btree root */
67 short if_broot_bytes; /* bytes allocated for root */
68 unsigned char if_flags; /* per-fork flags */
69 unsigned char if_ext_max; /* max # of extent records */
70 xfs_extnum_t if_lastex; /* last if_extents used */
71 union {
Christoph Hellwiga6f64d42007-08-16 16:23:40 +100072 xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110073 xfs_ext_irec_t *if_ext_irec; /* irec map file exts */
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 char *if_data; /* inline file data */
75 } if_u1;
76 union {
Christoph Hellwiga6f64d42007-08-16 16:23:40 +100077 xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 /* very small file extents */
79 char if_inline_data[XFS_INLINE_DATA];
80 /* very small file data */
81 xfs_dev_t if_rdev; /* dev number if special */
82 uuid_t if_uuid; /* mount point value */
83 } if_u2;
84} xfs_ifork_t;
85
86/*
87 * Flags for xfs_ichgtime().
88 */
89#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
Christoph Hellwigdff35fd2008-08-13 16:44:15 +100090#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92/*
93 * Per-fork incore inode flags.
94 */
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +110095#define XFS_IFINLINE 0x01 /* Inline data is read in */
96#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
97#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
98#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
100/*
Nathan Scottb12dd342006-03-17 17:26:04 +1100101 * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 */
Nathan Scottb12dd342006-03-17 17:26:04 +1100103#define XFS_IMAP_LOOKUP 0x1
104#define XFS_IMAP_BULKSTAT 0x2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106#ifdef __KERNEL__
107struct bhv_desc;
108struct cred;
109struct ktrace;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110struct xfs_buf;
111struct xfs_bmap_free;
112struct xfs_bmbt_irec;
113struct xfs_bmbt_block;
114struct xfs_inode;
115struct xfs_inode_log_item;
116struct xfs_mount;
117struct xfs_trans;
118struct xfs_dquot;
119
120#if defined(XFS_ILOCK_TRACE)
121#define XFS_ILOCK_KTRACE_SIZE 32
122extern ktrace_t *xfs_ilock_trace_buf;
123extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
124#else
125#define xfs_ilock_trace(i,n,f,ra)
126#endif
127
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128typedef struct dm_attrs_s {
129 __uint32_t da_dmevmask; /* DMIG event mask */
130 __uint16_t da_dmstate; /* DMIG state info */
131 __uint16_t da_pad; /* DMIG extra padding */
132} dm_attrs_t;
133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 * This is the xfs in-core inode structure.
136 * Most of the on-disk inode is embedded in the i_d field.
137 *
138 * The extent pointers/inline file space, however, are managed
139 * separately. The memory for this information is pointed to by
140 * the if_u1 unions depending on the type of the data.
141 * This is used to linearize the array of extents for fast in-core
142 * access. This is used until the file's number of extents
143 * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
144 * are accessed through the buffer cache.
145 *
146 * Other state kept in the in-core inode is used for identification,
147 * locking, transactional updating, etc of the inode.
148 *
149 * Generally, we do not want to hold the i_rlock while holding the
150 * i_ilock. Hierarchy is i_iolock followed by i_rlock.
151 *
152 * xfs_iptr_t contains all the inode fields upto and including the
153 * i_mnext and i_mprev fields, it is used as a marker in the inode
154 * chain off the mount structure by xfs_sync calls.
155 */
156
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000157typedef struct xfs_ictimestamp {
158 __int32_t t_sec; /* timestamp seconds */
159 __int32_t t_nsec; /* timestamp nanoseconds */
160} xfs_ictimestamp_t;
161
162/*
163 * NOTE: This structure must be kept identical to struct xfs_dinode_core
164 * in xfs_dinode.h except for the endianess annotations.
165 */
166typedef struct xfs_icdinode {
167 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
168 __uint16_t di_mode; /* mode and type of file */
169 __int8_t di_version; /* inode version */
170 __int8_t di_format; /* format of di_c data */
171 __uint16_t di_onlink; /* old number of links to file */
172 __uint32_t di_uid; /* owner's user id */
173 __uint32_t di_gid; /* owner's group id */
174 __uint32_t di_nlink; /* number of links to file */
175 __uint16_t di_projid; /* owner's project id */
176 __uint8_t di_pad[8]; /* unused, zeroed space */
177 __uint16_t di_flushiter; /* incremented on flush */
178 xfs_ictimestamp_t di_atime; /* time last accessed */
179 xfs_ictimestamp_t di_mtime; /* time last modified */
180 xfs_ictimestamp_t di_ctime; /* time created/inode modified */
181 xfs_fsize_t di_size; /* number of bytes in file */
182 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
183 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
184 xfs_extnum_t di_nextents; /* number of extents in data fork */
185 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
186 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
187 __int8_t di_aformat; /* format of attr fork's data */
188 __uint32_t di_dmevmask; /* DMIG event mask */
189 __uint16_t di_dmstate; /* DMIG state info */
190 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
191 __uint32_t di_gen; /* generation number */
192} xfs_icdinode_t;
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194typedef struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 struct xfs_inode *ip_mnext; /* next inode in mount list */
196 struct xfs_inode *ip_mprev; /* ptr to prev inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 struct xfs_mount *ip_mount; /* fs mount struct ptr */
198} xfs_iptr_t;
199
200typedef struct xfs_inode {
201 /* Inode linking and identification information. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 struct xfs_inode *i_mnext; /* next inode in mount list */
203 struct xfs_inode *i_mprev; /* ptr to prev inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 struct xfs_mount *i_mount; /* fs mount struct ptr */
205 struct list_head i_reclaim; /* reclaim list */
Christoph Hellwig5ec7f8c2008-08-13 16:22:40 +1000206 struct inode *i_vnode; /* vnode backpointer */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 struct xfs_dquot *i_udquot; /* user dquot */
208 struct xfs_dquot *i_gdquot; /* group dquot */
209
210 /* Inode location stuff */
211 xfs_ino_t i_ino; /* inode number (agno/agino)*/
212 xfs_daddr_t i_blkno; /* blkno of inode buffer */
213 ushort i_len; /* len of inode buffer */
214 ushort i_boffset; /* off of inode in buffer */
215
216 /* Extent information. */
217 xfs_ifork_t *i_afp; /* attribute fork pointer */
218 xfs_ifork_t i_df; /* data fork */
219
220 /* Transaction and locking information. */
221 struct xfs_trans *i_transp; /* ptr to owning transaction*/
222 struct xfs_inode_log_item *i_itemp; /* logging information */
223 mrlock_t i_lock; /* inode lock */
224 mrlock_t i_iolock; /* inode IO lock */
David Chinnerc63942d2008-08-13 16:41:16 +1000225 struct completion i_flush; /* inode flush completion q */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 atomic_t i_pincount; /* inode pin count */
227 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
David Chinnerf273ab82006-09-28 11:06:03 +1000228 spinlock_t i_flags_lock; /* inode i_flags lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 /* Miscellaneous state. */
230 unsigned short i_flags; /* see defined flags below */
231 unsigned char i_update_core; /* timestamps/size is dirty */
232 unsigned char i_update_size; /* di_size field is dirty */
233 unsigned int i_gen; /* generation count */
234 unsigned int i_delayed_blks; /* count of delay alloc blks */
235
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000236 xfs_icdinode_t i_d; /* most of ondisk inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237
Lachlan McIlroyba87ea62007-05-08 13:49:46 +1000238 xfs_fsize_t i_size; /* in-memory size */
Christoph Hellwig613d7042007-10-11 17:44:08 +1000239 xfs_fsize_t i_new_size; /* size when write completes */
Christoph Hellwigb677c212007-08-29 11:46:28 +1000240 atomic_t i_iocount; /* outstanding I/O count */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 /* Trace buffers per inode. */
Lachlan McIlroycf441ee2008-02-07 16:42:19 +1100242#ifdef XFS_INODE_TRACE
Christoph Hellwig1543d792007-08-29 11:46:47 +1000243 struct ktrace *i_trace; /* general inode trace */
244#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245#ifdef XFS_BMAP_TRACE
246 struct ktrace *i_xtrace; /* inode extent list trace */
247#endif
248#ifdef XFS_BMBT_TRACE
249 struct ktrace *i_btrace; /* inode bmap btree trace */
250#endif
251#ifdef XFS_RW_TRACE
252 struct ktrace *i_rwtrace; /* inode read/write trace */
253#endif
254#ifdef XFS_ILOCK_TRACE
255 struct ktrace *i_lock_trace; /* inode lock/unlock trace */
256#endif
257#ifdef XFS_DIR2_TRACE
258 struct ktrace *i_dir_trace; /* inode directory trace */
259#endif
260} xfs_inode_t;
261
Lachlan McIlroyba87ea62007-05-08 13:49:46 +1000262#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
263 (ip)->i_size : (ip)->i_d.di_size;
David Chinner7a18c382006-11-11 18:04:54 +1100264
David Chinner01651642008-08-13 15:45:15 +1000265/* Convert from vfs inode to xfs inode */
266static inline struct xfs_inode *XFS_I(struct inode *inode)
267{
268 return (struct xfs_inode *)inode->i_private;
269}
270
David Chinner01651642008-08-13 15:45:15 +1000271/* convert from xfs inode to vfs inode */
272static inline struct inode *VFS_I(struct xfs_inode *ip)
273{
274 return (struct inode *)ip->i_vnode;
275}
David Chinner01651642008-08-13 15:45:15 +1000276
David Chinner7a18c382006-11-11 18:04:54 +1100277/*
278 * i_flags helper functions
279 */
280static inline void
281__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
282{
283 ip->i_flags |= flags;
284}
285
286static inline void
287xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
288{
289 spin_lock(&ip->i_flags_lock);
290 __xfs_iflags_set(ip, flags);
291 spin_unlock(&ip->i_flags_lock);
292}
293
294static inline void
295xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
296{
297 spin_lock(&ip->i_flags_lock);
298 ip->i_flags &= ~flags;
299 spin_unlock(&ip->i_flags_lock);
300}
301
302static inline int
303__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
304{
305 return (ip->i_flags & flags);
306}
307
308static inline int
309xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
310{
311 int ret;
312 spin_lock(&ip->i_flags_lock);
313 ret = __xfs_iflags_test(ip, flags);
314 spin_unlock(&ip->i_flags_lock);
315 return ret;
316}
Christoph Hellwig09262b42007-08-29 11:44:50 +1000317
318static inline int
319xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
320{
321 int ret;
322
323 spin_lock(&ip->i_flags_lock);
324 ret = ip->i_flags & flags;
325 if (ret)
326 ip->i_flags &= ~flags;
327 spin_unlock(&ip->i_flags_lock);
328 return ret;
329}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330#endif /* __KERNEL__ */
331
332
333/*
334 * Fork handling.
335 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336
Christoph Hellwig45ba5982007-12-07 14:07:20 +1100337#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
338#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
339
340#define XFS_IFORK_PTR(ip,w) \
341 ((w) == XFS_DATA_FORK ? \
342 &(ip)->i_df : \
343 (ip)->i_afp)
344#define XFS_IFORK_DSIZE(ip) \
345 (XFS_IFORK_Q(ip) ? \
346 XFS_IFORK_BOFF(ip) : \
347 XFS_LITINO((ip)->i_mount))
348#define XFS_IFORK_ASIZE(ip) \
349 (XFS_IFORK_Q(ip) ? \
350 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
351 0)
352#define XFS_IFORK_SIZE(ip,w) \
353 ((w) == XFS_DATA_FORK ? \
354 XFS_IFORK_DSIZE(ip) : \
355 XFS_IFORK_ASIZE(ip))
356#define XFS_IFORK_FORMAT(ip,w) \
357 ((w) == XFS_DATA_FORK ? \
358 (ip)->i_d.di_format : \
359 (ip)->i_d.di_aformat)
360#define XFS_IFORK_FMT_SET(ip,w,n) \
361 ((w) == XFS_DATA_FORK ? \
362 ((ip)->i_d.di_format = (n)) : \
363 ((ip)->i_d.di_aformat = (n)))
364#define XFS_IFORK_NEXTENTS(ip,w) \
365 ((w) == XFS_DATA_FORK ? \
366 (ip)->i_d.di_nextents : \
367 (ip)->i_d.di_anextents)
368#define XFS_IFORK_NEXT_SET(ip,w,n) \
369 ((w) == XFS_DATA_FORK ? \
370 ((ip)->i_d.di_nextents = (n)) : \
371 ((ip)->i_d.di_anextents = (n)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372
373#ifdef __KERNEL__
374
375/*
376 * In-core inode flags.
377 */
378#define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */
379#define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */
380#define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */
381#define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */
382#define XFS_ISTALE 0x0010 /* inode has been staled */
383#define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */
384#define XFS_INEW 0x0040
David Chinner2a82b8b2007-07-11 11:09:12 +1000385#define XFS_IFILESTREAM 0x0080 /* inode is in a filestream directory */
Christoph Hellwigb3aea4e2007-08-29 11:44:37 +1000386#define XFS_IMODIFIED 0x0100 /* XFS inode state possibly differs */
387 /* to the Linux inode state. */
388#define XFS_ITRUNCATED 0x0200 /* truncated down so flush-on-close */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
390/*
391 * Flags for inode locking.
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000392 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
393 * 1<<16 - 1<<32-1 -- lockdep annotation (integers)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 */
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000395#define XFS_IOLOCK_EXCL (1<<0)
396#define XFS_IOLOCK_SHARED (1<<1)
397#define XFS_ILOCK_EXCL (1<<2)
398#define XFS_ILOCK_SHARED (1<<3)
399#define XFS_IUNLOCK_NONOTIFY (1<<4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000401#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000402 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000403
404/*
405 * Flags for lockdep annotations.
406 *
407 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
408 * (ie directory operations that require locking a directory inode and
409 * an entry inode). The first inode gets locked with this flag so it
410 * gets a lockdep subclass of 1 and the second lock will have a lockdep
411 * subclass of 0.
412 *
David Chinner0f1145c2007-06-29 17:26:09 +1000413 * XFS_LOCK_INUMORDER - for locking several inodes at the some time
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000414 * with xfs_lock_inodes(). This flag is used as the starting subclass
415 * and each subsequent lock acquired will increment the subclass by one.
416 * So the first lock acquired will have a lockdep subclass of 2, the
David Chinner0f1145c2007-06-29 17:26:09 +1000417 * second lock will have a lockdep subclass of 3, and so on. It is
418 * the responsibility of the class builder to shift this to the correct
419 * portion of the lock_mode lockdep mask.
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000420 */
David Chinner0f1145c2007-06-29 17:26:09 +1000421#define XFS_LOCK_PARENT 1
422#define XFS_LOCK_INUMORDER 2
423
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000424#define XFS_IOLOCK_SHIFT 16
David Chinner0f1145c2007-06-29 17:26:09 +1000425#define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000426
427#define XFS_ILOCK_SHIFT 24
David Chinner0f1145c2007-06-29 17:26:09 +1000428#define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000429
430#define XFS_IOLOCK_DEP_MASK 0x00ff0000
431#define XFS_ILOCK_DEP_MASK 0xff000000
432#define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
433
434#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
435#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436
437/*
438 * Flags for xfs_iflush()
439 */
440#define XFS_IFLUSH_DELWRI_ELSE_SYNC 1
441#define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2
442#define XFS_IFLUSH_SYNC 3
443#define XFS_IFLUSH_ASYNC 4
444#define XFS_IFLUSH_DELWRI 5
David Chinnera3f74ff2008-03-06 13:43:42 +1100445#define XFS_IFLUSH_ASYNC_NOBLOCK 6
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
447/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 * Flags for xfs_itruncate_start().
449 */
450#define XFS_ITRUNC_DEFINITE 0x1
451#define XFS_ITRUNC_MAYBE 0x2
452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453/*
454 * For multiple groups support: if S_ISGID bit is set in the parent
455 * directory, group of new file is set to that of the parent, and
456 * new subdirectory gets S_ISGID bit from parent.
457 */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000458#define XFS_INHERIT_GID(pip) \
459 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
460 ((pip)->i_d.di_mode & S_ISGID))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
462/*
Nathan Scott745b1f472006-09-28 11:02:23 +1000463 * Flags for xfs_iget()
464 */
465#define XFS_IGET_CREATE 0x1
466#define XFS_IGET_BULKSTAT 0x2
467
468/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 * xfs_iget.c prototypes.
470 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471void xfs_ihash_init(struct xfs_mount *);
472void xfs_ihash_free(struct xfs_mount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
474 struct xfs_trans *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
476 uint, uint, xfs_inode_t **, xfs_daddr_t);
477void xfs_iput(xfs_inode_t *, uint);
478void xfs_iput_new(xfs_inode_t *, uint);
479void xfs_ilock(xfs_inode_t *, uint);
480int xfs_ilock_nowait(xfs_inode_t *, uint);
481void xfs_iunlock(xfs_inode_t *, uint);
482void xfs_ilock_demote(xfs_inode_t *, uint);
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000483int xfs_isilocked(xfs_inode_t *, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484uint xfs_ilock_map_shared(xfs_inode_t *);
485void xfs_iunlock_map_shared(xfs_inode_t *, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486void xfs_ireclaim(xfs_inode_t *);
487int xfs_finish_reclaim(xfs_inode_t *, int, int);
488int xfs_finish_reclaim_all(struct xfs_mount *, int);
489
490/*
491 * xfs_inode.c prototypes.
492 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000494 xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **,
David Chinnera3f74ff2008-03-06 13:43:42 +1100495 xfs_daddr_t, uint, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
Nathan Scott745b1f472006-09-28 11:02:23 +1000497 xfs_inode_t **, xfs_daddr_t, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int);
Nathan Scott31b084a2005-05-05 13:25:00 -0700499int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
500 xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
501 int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000502void xfs_dinode_from_disk(struct xfs_icdinode *,
503 struct xfs_dinode_core *);
504void xfs_dinode_to_disk(struct xfs_dinode_core *,
505 struct xfs_icdinode *);
506
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507uint xfs_ip2xflags(struct xfs_inode *);
Christoph Hellwig45ba5982007-12-07 14:07:20 +1100508uint xfs_dic2xflags(struct xfs_dinode *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
510 struct xfs_bmap_free *);
Lachlan McIlroyd3cf2092007-05-08 13:49:27 +1000511int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
513 xfs_fsize_t, int, int);
514int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
516void xfs_idestroy_fork(xfs_inode_t *, int);
517void xfs_idestroy(xfs_inode_t *);
518void xfs_idata_realloc(xfs_inode_t *, int, int);
519void xfs_iextract(xfs_inode_t *);
520void xfs_iext_realloc(xfs_inode_t *, int, int);
521void xfs_iroot_realloc(xfs_inode_t *, int, int);
522void xfs_ipin(xfs_inode_t *);
523void xfs_iunpin(xfs_inode_t *);
524int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int);
525int xfs_iflush(xfs_inode_t *, uint);
Christoph Hellwigefa80272005-06-21 15:37:17 +1000526void xfs_iflush_all(struct xfs_mount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527void xfs_ichgtime(xfs_inode_t *, int);
528xfs_fsize_t xfs_file_last_byte(xfs_inode_t *);
Christoph Hellwigcfa853e2008-04-22 17:34:06 +1000529void xfs_lock_inodes(xfs_inode_t **, int, uint);
Christoph Hellwige1cccd92008-08-13 16:18:07 +1000530void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531
Christoph Hellwig42fe2b12006-01-11 15:35:17 +1100532void xfs_synchronize_atime(xfs_inode_t *);
David Chinner5d51eff2007-11-23 16:29:18 +1100533void xfs_mark_inode_dirty_sync(xfs_inode_t *);
Christoph Hellwig42fe2b12006-01-11 15:35:17 +1100534
Christoph Hellwiga6f64d42007-08-16 16:23:40 +1000535xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100536void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
537 xfs_bmbt_irec_t *);
538void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100539void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100540void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int);
541void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
542void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100543void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100544void xfs_iext_realloc_direct(xfs_ifork_t *, int);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100545void xfs_iext_realloc_indirect(xfs_ifork_t *, int);
546void xfs_iext_indirect_to_direct(xfs_ifork_t *);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100547void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
548void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
549void xfs_iext_destroy(xfs_ifork_t *);
Christoph Hellwiga6f64d42007-08-16 16:23:40 +1000550xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
Mandy Kirkconnell0293ce32006-03-14 13:30:23 +1100551xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
552xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
553void xfs_iext_irec_init(xfs_ifork_t *);
554xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
555void xfs_iext_irec_remove(xfs_ifork_t *, int);
556void xfs_iext_irec_compact(xfs_ifork_t *);
557void xfs_iext_irec_compact_pages(xfs_ifork_t *);
558void xfs_iext_irec_compact_full(xfs_ifork_t *);
559void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
Mandy Kirkconnell4eea22f2006-03-14 13:29:52 +1100560
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
562
563#ifdef DEBUG
564void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t);
565#else /* DEBUG */
566#define xfs_isize_check(mp, ip, isize)
567#endif /* DEBUG */
568
569#if defined(DEBUG)
570void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
571#else
572#define xfs_inobp_check(mp, bp)
573#endif /* DEBUG */
574
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575extern struct kmem_zone *xfs_ifork_zone;
576extern struct kmem_zone *xfs_inode_zone;
577extern struct kmem_zone *xfs_ili_zone;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
David Chinnerc63942d2008-08-13 16:41:16 +1000579/*
580 * Manage the i_flush queue embedded in the inode. This completion
581 * queue synchronizes processes attempting to flush the in-core
582 * inode back to disk.
583 */
584static inline void xfs_iflock(xfs_inode_t *ip)
585{
586 wait_for_completion(&ip->i_flush);
587}
588
589static inline int xfs_iflock_nowait(xfs_inode_t *ip)
590{
591 return try_wait_for_completion(&ip->i_flush);
592}
593
594static inline void xfs_ifunlock(xfs_inode_t *ip)
595{
596 complete(&ip->i_flush);
597}
598
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599#endif /* __KERNEL__ */
600
601#endif /* __XFS_INODE_H__ */