Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 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_MOUNT_H__ | |
19 | #define __XFS_MOUNT_H__ | |
20 | ||
1da177e4 LT |
21 | typedef struct xfs_trans_reservations { |
22 | uint tr_write; /* extent alloc trans */ | |
23 | uint tr_itruncate; /* truncate trans */ | |
24 | uint tr_rename; /* rename trans */ | |
25 | uint tr_link; /* link trans */ | |
26 | uint tr_remove; /* unlink trans */ | |
27 | uint tr_symlink; /* symlink trans */ | |
28 | uint tr_create; /* create trans */ | |
29 | uint tr_mkdir; /* mkdir trans */ | |
30 | uint tr_ifree; /* inode free trans */ | |
31 | uint tr_ichange; /* inode update trans */ | |
32 | uint tr_growdata; /* fs data section grow trans */ | |
33 | uint tr_swrite; /* sync write inode trans */ | |
34 | uint tr_addafork; /* cvt inode to attributed trans */ | |
35 | uint tr_writeid; /* write setuid/setgid file */ | |
36 | uint tr_attrinval; /* attr fork buffer invalidation */ | |
37 | uint tr_attrset; /* set/create an attribute */ | |
38 | uint tr_attrrm; /* remove an attribute */ | |
39 | uint tr_clearagi; /* clear bad agi unlinked ino bucket */ | |
40 | uint tr_growrtalloc; /* grow realtime allocations */ | |
41 | uint tr_growrtzero; /* grow realtime zeroing */ | |
42 | uint tr_growrtfree; /* grow realtime freeing */ | |
43 | } xfs_trans_reservations_t; | |
44 | ||
1da177e4 | 45 | #ifndef __KERNEL__ |
847fff5c | 46 | |
9d87c319 | 47 | #define xfs_daddr_to_agno(mp,d) \ |
1da177e4 | 48 | ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks)) |
9d87c319 | 49 | #define xfs_daddr_to_agbno(mp,d) \ |
1da177e4 | 50 | ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks)) |
847fff5c BN |
51 | |
52 | #else /* __KERNEL__ */ | |
53 | ||
6d73cf13 CH |
54 | #include "xfs_sync.h" |
55 | ||
1da177e4 | 56 | struct log; |
1da177e4 | 57 | struct xfs_mount_args; |
1da177e4 | 58 | struct xfs_inode; |
1da177e4 LT |
59 | struct xfs_bmbt_irec; |
60 | struct xfs_bmap_free; | |
3e57ecf6 OW |
61 | struct xfs_extdelta; |
62 | struct xfs_swapext; | |
2a82b8be | 63 | struct xfs_mru_cache; |
5163f95a | 64 | struct xfs_nameops; |
82fa9012 | 65 | struct xfs_ail; |
7d095257 CH |
66 | struct xfs_quotainfo; |
67 | ||
8d280b98 DC |
68 | #ifdef HAVE_PERCPU_SB |
69 | ||
70 | /* | |
71 | * Valid per-cpu incore superblock counters. Note that if you add new counters, | |
72 | * you may need to define new counter disabled bit field descriptors as there | |
73 | * are more possible fields in the superblock that can fit in a bitfield on a | |
74 | * 32 bit platform. The XFS_SBS_* values for the current current counters just | |
75 | * fit. | |
76 | */ | |
77 | typedef struct xfs_icsb_cnts { | |
78 | uint64_t icsb_fdblocks; | |
79 | uint64_t icsb_ifree; | |
80 | uint64_t icsb_icount; | |
01e1b69c | 81 | unsigned long icsb_flags; |
8d280b98 DC |
82 | } xfs_icsb_cnts_t; |
83 | ||
01e1b69c DC |
84 | #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ |
85 | ||
8d280b98 DC |
86 | #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ |
87 | ||
88 | extern int xfs_icsb_init_counters(struct xfs_mount *); | |
5478eead | 89 | extern void xfs_icsb_reinit_counters(struct xfs_mount *); |
c962fb79 | 90 | extern void xfs_icsb_destroy_counters(struct xfs_mount *); |
d4d90b57 CH |
91 | extern void xfs_icsb_sync_counters(struct xfs_mount *, int); |
92 | extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int); | |
96540c78 CH |
93 | extern int xfs_icsb_modify_counters(struct xfs_mount *, xfs_sb_field_t, |
94 | int64_t, int); | |
8d280b98 DC |
95 | |
96 | #else | |
c962fb79 CH |
97 | #define xfs_icsb_init_counters(mp) (0) |
98 | #define xfs_icsb_destroy_counters(mp) do { } while (0) | |
99 | #define xfs_icsb_reinit_counters(mp) do { } while (0) | |
d4d90b57 | 100 | #define xfs_icsb_sync_counters(mp, flags) do { } while (0) |
7155054c | 101 | #define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0) |
96540c78 CH |
102 | #define xfs_icsb_modify_counters(mp, field, delta, rsvd) \ |
103 | xfs_mod_incore_sb(mp, field, delta, rsvd) | |
8d280b98 | 104 | #endif |
1da177e4 | 105 | |
055388a3 DC |
106 | /* dynamic preallocation free space thresholds, 5% down to 1% */ |
107 | enum { | |
108 | XFS_LOWSP_1_PCNT = 0, | |
109 | XFS_LOWSP_2_PCNT, | |
110 | XFS_LOWSP_3_PCNT, | |
111 | XFS_LOWSP_4_PCNT, | |
112 | XFS_LOWSP_5_PCNT, | |
113 | XFS_LOWSP_MAX, | |
114 | }; | |
115 | ||
1da177e4 | 116 | typedef struct xfs_mount { |
b267ce99 | 117 | struct super_block *m_super; |
1da177e4 | 118 | xfs_tid_t m_tid; /* next unused tid for fs */ |
82fa9012 | 119 | struct xfs_ail *m_ail; /* fs active log item list */ |
1da177e4 | 120 | xfs_sb_t m_sb; /* copy of fs superblock */ |
3685c2a1 | 121 | spinlock_t m_sb_lock; /* sb counter lock */ |
1da177e4 LT |
122 | struct xfs_buf *m_sb_bp; /* buffer for superblock */ |
123 | char *m_fsname; /* filesystem name */ | |
124 | int m_fsname_len; /* strlen of fs name */ | |
fc1f8c1c NS |
125 | char *m_rtname; /* realtime device name */ |
126 | char *m_logname; /* external log device name */ | |
1da177e4 LT |
127 | int m_bsize; /* fs logical block size */ |
128 | xfs_agnumber_t m_agfrotor; /* last ag where space found */ | |
129 | xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ | |
36e41eeb | 130 | spinlock_t m_agirotor_lock;/* .. and lock protecting it */ |
1da177e4 | 131 | xfs_agnumber_t m_maxagi; /* highest inode alloc group */ |
1da177e4 LT |
132 | uint m_readio_log; /* min read size log bytes */ |
133 | uint m_readio_blocks; /* min read size blocks */ | |
134 | uint m_writeio_log; /* min write size log bytes */ | |
135 | uint m_writeio_blocks; /* min write size blocks */ | |
136 | struct log *m_log; /* log specific stuff */ | |
137 | int m_logbufs; /* number of log buffers */ | |
138 | int m_logbsize; /* size of each log buffer */ | |
139 | uint m_rsumlevels; /* rt summary levels */ | |
140 | uint m_rsumsize; /* size of rt summary, bytes */ | |
141 | struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ | |
142 | struct xfs_inode *m_rsumip; /* pointer to summary inode */ | |
143 | struct xfs_inode *m_rootip; /* pointer to root directory */ | |
144 | struct xfs_quotainfo *m_quotainfo; /* disk quota information */ | |
145 | xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ | |
146 | xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ | |
147 | xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ | |
1da177e4 LT |
148 | __uint8_t m_blkbit_log; /* blocklog + NBBY */ |
149 | __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ | |
150 | __uint8_t m_agno_log; /* log #ag's */ | |
151 | __uint8_t m_agino_log; /* #bits for agino in inum */ | |
1da177e4 LT |
152 | __uint16_t m_inode_cluster_size;/* min inode buf size */ |
153 | uint m_blockmask; /* sb_blocksize-1 */ | |
154 | uint m_blockwsize; /* sb_blocksize in words */ | |
155 | uint m_blockwmask; /* blockwsize-1 */ | |
60197e8d CH |
156 | uint m_alloc_mxr[2]; /* max alloc btree records */ |
157 | uint m_alloc_mnr[2]; /* min alloc btree records */ | |
158 | uint m_bmap_dmxr[2]; /* max bmap btree records */ | |
159 | uint m_bmap_dmnr[2]; /* min bmap btree records */ | |
160 | uint m_inobt_mxr[2]; /* max inobt btree records */ | |
161 | uint m_inobt_mnr[2]; /* min inobt btree records */ | |
1da177e4 LT |
162 | uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ |
163 | uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ | |
0d87e656 | 164 | uint m_in_maxlevels; /* max inobt btree levels. */ |
1c1c6ebc DC |
165 | struct radix_tree_root m_perag_tree; /* per-ag accounting info */ |
166 | spinlock_t m_perag_lock; /* lock for m_perag_tree */ | |
cc92e7ac | 167 | struct mutex m_growlock; /* growfs mutex */ |
1da177e4 LT |
168 | int m_fixedfsid[2]; /* unchanged for life of FS */ |
169 | uint m_dmevmask; /* DMI events for this FS */ | |
e718eeb4 | 170 | __uint64_t m_flags; /* global mount flags */ |
1da177e4 LT |
171 | uint m_dir_node_ents; /* #entries in a dir danode */ |
172 | uint m_attr_node_ents; /* #entries in attr danode */ | |
173 | int m_ialloc_inos; /* inodes in inode allocation */ | |
174 | int m_ialloc_blks; /* blocks in inode allocation */ | |
1da177e4 LT |
175 | int m_inoalign_mask;/* mask sb_inoalignmt if used */ |
176 | uint m_qflags; /* quota status flags */ | |
177 | xfs_trans_reservations_t m_reservations;/* precomputed res values */ | |
178 | __uint64_t m_maxicount; /* maximum inode count */ | |
179 | __uint64_t m_maxioffset; /* maximum inode offset */ | |
180 | __uint64_t m_resblks; /* total reserved blocks */ | |
181 | __uint64_t m_resblks_avail;/* available reserved blocks */ | |
cbe132a8 | 182 | __uint64_t m_resblks_save; /* reserved blks @ remount,ro */ |
1da177e4 LT |
183 | int m_dalign; /* stripe unit */ |
184 | int m_swidth; /* stripe width */ | |
c41564b5 | 185 | int m_sinoalign; /* stripe unit inode alignment */ |
1da177e4 LT |
186 | int m_attr_magicpct;/* 37% of the blocksize */ |
187 | int m_dir_magicpct; /* 37% of the dir blocksize */ | |
1da177e4 | 188 | __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ |
5163f95a | 189 | const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */ |
1da177e4 LT |
190 | int m_dirblksize; /* directory block sz--bytes */ |
191 | int m_dirblkfsbs; /* directory block sz--fsbs */ | |
192 | xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ | |
193 | xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ | |
194 | xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ | |
195 | uint m_chsize; /* size of next field */ | |
196 | struct xfs_chash *m_chash; /* fs private inode per-cluster | |
197 | * hash table */ | |
1da177e4 | 198 | atomic_t m_active_trans; /* number trans frozen */ |
8d280b98 | 199 | #ifdef HAVE_PERCPU_SB |
003cb608 | 200 | xfs_icsb_cnts_t __percpu *m_sb_cnts; /* per-cpu superblock counters */ |
8d280b98 | 201 | unsigned long m_icsb_counters; /* disabled per-cpu counters */ |
e8234a68 | 202 | struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ |
20b64285 | 203 | struct mutex m_icsb_mutex; /* balancer sync lock */ |
8d280b98 | 204 | #endif |
2a82b8be | 205 | struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ |
c6d09b66 | 206 | struct delayed_work m_sync_work; /* background sync work */ |
a7b339f1 | 207 | struct delayed_work m_reclaim_work; /* background inode reclaim */ |
89e4cb55 | 208 | struct work_struct m_flush_work; /* background inode flush */ |
7884bc86 CH |
209 | __int64_t m_update_flags; /* sb flags we need to update |
210 | on the next remount,rw */ | |
70e60ce7 | 211 | struct shrinker m_inode_shrink; /* inode reclaim shrinker */ |
055388a3 DC |
212 | int64_t m_low_space[XFS_LOWSP_MAX]; |
213 | /* low free space thresholds */ | |
aa6bf01d CH |
214 | |
215 | struct workqueue_struct *m_data_workqueue; | |
216 | struct workqueue_struct *m_unwritten_workqueue; | |
4c2d542f | 217 | struct workqueue_struct *m_cil_workqueue; |
1da177e4 LT |
218 | } xfs_mount_t; |
219 | ||
220 | /* | |
221 | * Flags for m_flags. | |
222 | */ | |
92821e2b | 223 | #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops |
1da177e4 LT |
224 | must be synchronous except |
225 | for space allocations */ | |
92821e2b | 226 | #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) |
e718eeb4 | 227 | #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem |
1da177e4 LT |
228 | operations, typically for |
229 | disk errors in metadata */ | |
e84661aa | 230 | #define XFS_MOUNT_DISCARD (1ULL << 5) /* discard unused blocks */ |
e718eeb4 | 231 | #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to |
1da177e4 | 232 | user */ |
e718eeb4 | 233 | #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment |
1da177e4 | 234 | allocations */ |
13059ff0 | 235 | #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ |
bd186aa9 | 236 | #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */ |
e718eeb4 | 237 | #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ |
e718eeb4 | 238 | #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ |
e718eeb4 | 239 | #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above |
1da177e4 | 240 | * 32 bits in size */ |
bd186aa9 | 241 | #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */ |
e718eeb4 NS |
242 | #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ |
243 | #define XFS_MOUNT_BARRIER (1ULL << 17) | |
1bd960ee | 244 | #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/ |
e718eeb4 | 245 | #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width |
1da177e4 | 246 | * allocation */ |
bd186aa9 | 247 | #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */ |
e718eeb4 NS |
248 | #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ |
249 | #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred | |
e8c8b3a7 | 250 | * I/O size in stat() */ |
2a82b8be DC |
251 | #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams |
252 | allocator */ | |
7c12f296 | 253 | #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */ |
e8c8b3a7 | 254 | |
1da177e4 LT |
255 | |
256 | /* | |
257 | * Default minimum read and write sizes. | |
258 | */ | |
259 | #define XFS_READIO_LOG_LARGE 16 | |
260 | #define XFS_WRITEIO_LOG_LARGE 16 | |
261 | ||
262 | /* | |
1f443ad7 NS |
263 | * Max and min values for mount-option defined I/O |
264 | * preallocation sizes. | |
1da177e4 | 265 | */ |
1f443ad7 | 266 | #define XFS_MAX_IO_LOG 30 /* 1G */ |
1da177e4 LT |
267 | #define XFS_MIN_IO_LOG PAGE_SHIFT |
268 | ||
269 | /* | |
270 | * Synchronous read and write sizes. This should be | |
271 | * better for NFSv2 wsync filesystems. | |
272 | */ | |
9da096fd MP |
273 | #define XFS_WSYNC_READIO_LOG 15 /* 32k */ |
274 | #define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */ | |
1da177e4 | 275 | |
e8c8b3a7 DC |
276 | /* |
277 | * Allow large block sizes to be reported to userspace programs if the | |
556b8b16 | 278 | * "largeio" mount option is used. |
e8c8b3a7 DC |
279 | * |
280 | * If compatibility mode is specified, simply return the basic unit of caching | |
281 | * so that we don't get inefficient read/modify/write I/O from user apps. | |
282 | * Otherwise.... | |
283 | * | |
284 | * If the underlying volume is a stripe, then return the stripe width in bytes | |
285 | * as the recommended I/O size. It is not a stripe and we've set a default | |
286 | * buffered I/O size, return that, otherwise return the compat default. | |
287 | */ | |
288 | static inline unsigned long | |
289 | xfs_preferred_iosize(xfs_mount_t *mp) | |
290 | { | |
291 | if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) | |
292 | return PAGE_CACHE_SIZE; | |
293 | return (mp->m_swidth ? | |
294 | (mp->m_swidth << mp->m_sb.sb_blocklog) : | |
295 | ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? | |
296 | (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : | |
297 | PAGE_CACHE_SIZE)); | |
298 | } | |
299 | ||
1da177e4 LT |
300 | #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) |
301 | ||
92821e2b DC |
302 | #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ |
303 | ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) | |
1da177e4 | 304 | #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) |
745f6919 CH |
305 | void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, |
306 | int lnnum); | |
1da177e4 | 307 | #define xfs_force_shutdown(m,f) \ |
745f6919 | 308 | xfs_do_force_shutdown(m, f, __FILE__, __LINE__) |
1da177e4 | 309 | |
2b5decd0 CH |
310 | #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */ |
311 | #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */ | |
312 | #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */ | |
313 | #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */ | |
314 | #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */ | |
315 | #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */ | |
316 | ||
317 | #define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen) | |
318 | #define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l)) | |
319 | ||
1da177e4 LT |
320 | /* |
321 | * Flags for xfs_mountfs | |
322 | */ | |
764d1f89 | 323 | #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ |
1da177e4 | 324 | |
a844f451 NS |
325 | static inline xfs_agnumber_t |
326 | xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 327 | { |
a844f451 NS |
328 | xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
329 | do_div(ld, mp->m_sb.sb_agblocks); | |
330 | return (xfs_agnumber_t) ld; | |
1da177e4 LT |
331 | } |
332 | ||
a844f451 NS |
333 | static inline xfs_agblock_t |
334 | xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 335 | { |
a844f451 NS |
336 | xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
337 | return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); | |
1da177e4 LT |
338 | } |
339 | ||
da353b0d | 340 | /* |
aed3bb90 | 341 | * perag get/put wrappers for ref counting |
da353b0d | 342 | */ |
0fa800fb | 343 | struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno); |
65d0f205 DC |
344 | struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *mp, xfs_agnumber_t agno, |
345 | int tag); | |
0fa800fb | 346 | void xfs_perag_put(struct xfs_perag *pag); |
da353b0d | 347 | |
03135cf7 DC |
348 | /* |
349 | * Per-cpu superblock locking functions | |
350 | */ | |
351 | #ifdef HAVE_PERCPU_SB | |
b8f82a4a | 352 | static inline void |
03135cf7 DC |
353 | xfs_icsb_lock(xfs_mount_t *mp) |
354 | { | |
355 | mutex_lock(&mp->m_icsb_mutex); | |
356 | } | |
357 | ||
b8f82a4a | 358 | static inline void |
03135cf7 DC |
359 | xfs_icsb_unlock(xfs_mount_t *mp) |
360 | { | |
361 | mutex_unlock(&mp->m_icsb_mutex); | |
362 | } | |
363 | #else | |
364 | #define xfs_icsb_lock(mp) | |
365 | #define xfs_icsb_unlock(mp) | |
366 | #endif | |
367 | ||
1da177e4 LT |
368 | /* |
369 | * This structure is for use by the xfs_mod_incore_sb_batch() routine. | |
20f4ebf2 | 370 | * xfs_growfs can specify a few fields which are more than int limit |
1da177e4 LT |
371 | */ |
372 | typedef struct xfs_mod_sb { | |
373 | xfs_sb_field_t msb_field; /* Field to modify, see below */ | |
20f4ebf2 | 374 | int64_t msb_delta; /* Change to make to specified field */ |
1da177e4 LT |
375 | } xfs_mod_sb_t; |
376 | ||
adab0f67 | 377 | extern int xfs_log_sbcount(xfs_mount_t *); |
d5db0f97 | 378 | extern __uint64_t xfs_default_resblks(xfs_mount_t *mp); |
4249023a | 379 | extern int xfs_mountfs(xfs_mount_t *mp); |
1da177e4 | 380 | |
41b5c2e7 | 381 | extern void xfs_unmountfs(xfs_mount_t *); |
20f4ebf2 | 382 | extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); |
1da177e4 LT |
383 | extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, |
384 | uint, int); | |
7884bc86 | 385 | extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t); |
1da177e4 | 386 | extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); |
764d1f89 | 387 | extern int xfs_readsb(xfs_mount_t *, int); |
1da177e4 | 388 | extern void xfs_freesb(xfs_mount_t *); |
92821e2b | 389 | extern int xfs_fs_writable(xfs_mount_t *); |
4cc929ee | 390 | extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); |
1da177e4 | 391 | |
d7658d48 CH |
392 | extern int xfs_dev_is_read_only(struct xfs_mount *, char *); |
393 | ||
055388a3 DC |
394 | extern void xfs_set_low_space_thresholds(struct xfs_mount *); |
395 | ||
1da177e4 LT |
396 | #endif /* __KERNEL__ */ |
397 | ||
847fff5c | 398 | extern void xfs_mod_sb(struct xfs_trans *, __int64_t); |
1c1c6ebc DC |
399 | extern int xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t, |
400 | xfs_agnumber_t *); | |
6bd92a23 | 401 | extern void xfs_sb_from_disk(struct xfs_mount *, struct xfs_dsb *); |
847fff5c BN |
402 | extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); |
403 | ||
1da177e4 | 404 | #endif /* __XFS_MOUNT_H__ */ |