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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 LT |
56 | struct cred; |
57 | struct log; | |
1da177e4 | 58 | struct xfs_mount_args; |
1da177e4 | 59 | struct xfs_inode; |
1da177e4 LT |
60 | struct xfs_bmbt_irec; |
61 | struct xfs_bmap_free; | |
3e57ecf6 OW |
62 | struct xfs_extdelta; |
63 | struct xfs_swapext; | |
2a82b8be | 64 | struct xfs_mru_cache; |
5163f95a | 65 | struct xfs_nameops; |
82fa9012 | 66 | struct xfs_ail; |
7d095257 CH |
67 | struct xfs_quotainfo; |
68 | ||
1da177e4 | 69 | |
1da177e4 LT |
70 | /* |
71 | * Prototypes and functions for the Data Migration subsystem. | |
72 | */ | |
73 | ||
bc4ac74a | 74 | typedef int (*xfs_send_data_t)(int, struct xfs_inode *, |
126468b1 | 75 | xfs_off_t, size_t, int, int *); |
1da177e4 | 76 | typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); |
bc4ac74a | 77 | typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t); |
b267ce99 | 78 | typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *, |
bc4ac74a CH |
79 | struct xfs_inode *, dm_right_t, |
80 | struct xfs_inode *, dm_right_t, | |
556b8b16 | 81 | const char *, const char *, mode_t, int, int); |
293688ec CH |
82 | typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t, |
83 | char *, char *); | |
bc4ac74a | 84 | typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *, |
1da177e4 LT |
85 | dm_right_t, mode_t, int, int); |
86 | ||
87 | typedef struct xfs_dmops { | |
88 | xfs_send_data_t xfs_send_data; | |
89 | xfs_send_mmap_t xfs_send_mmap; | |
90 | xfs_send_destroy_t xfs_send_destroy; | |
91 | xfs_send_namesp_t xfs_send_namesp; | |
293688ec | 92 | xfs_send_mount_t xfs_send_mount; |
1da177e4 LT |
93 | xfs_send_unmount_t xfs_send_unmount; |
94 | } xfs_dmops_t; | |
95 | ||
bc4ac74a CH |
96 | #define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \ |
97 | (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock) | |
1da177e4 | 98 | #define XFS_SEND_MMAP(mp, vma,fl) \ |
293688ec | 99 | (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl) |
bc4ac74a CH |
100 | #define XFS_SEND_DESTROY(mp, ip,right) \ |
101 | (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right) | |
1da177e4 | 102 | #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ |
293688ec | 103 | (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) |
b267ce99 CH |
104 | #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ |
105 | (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) | |
293688ec CH |
106 | #define XFS_SEND_MOUNT(mp,right,path,name) \ |
107 | (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name) | |
bc4ac74a CH |
108 | #define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \ |
109 | (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl) | |
1da177e4 LT |
110 | |
111 | ||
8d280b98 DC |
112 | #ifdef HAVE_PERCPU_SB |
113 | ||
114 | /* | |
115 | * Valid per-cpu incore superblock counters. Note that if you add new counters, | |
116 | * you may need to define new counter disabled bit field descriptors as there | |
117 | * are more possible fields in the superblock that can fit in a bitfield on a | |
118 | * 32 bit platform. The XFS_SBS_* values for the current current counters just | |
119 | * fit. | |
120 | */ | |
121 | typedef struct xfs_icsb_cnts { | |
122 | uint64_t icsb_fdblocks; | |
123 | uint64_t icsb_ifree; | |
124 | uint64_t icsb_icount; | |
01e1b69c | 125 | unsigned long icsb_flags; |
8d280b98 DC |
126 | } xfs_icsb_cnts_t; |
127 | ||
01e1b69c DC |
128 | #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ |
129 | ||
8d280b98 DC |
130 | #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ |
131 | ||
132 | extern int xfs_icsb_init_counters(struct xfs_mount *); | |
5478eead | 133 | extern void xfs_icsb_reinit_counters(struct xfs_mount *); |
c962fb79 | 134 | extern void xfs_icsb_destroy_counters(struct xfs_mount *); |
d4d90b57 CH |
135 | extern void xfs_icsb_sync_counters(struct xfs_mount *, int); |
136 | extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int); | |
8d280b98 DC |
137 | |
138 | #else | |
c962fb79 CH |
139 | #define xfs_icsb_init_counters(mp) (0) |
140 | #define xfs_icsb_destroy_counters(mp) do { } while (0) | |
141 | #define xfs_icsb_reinit_counters(mp) do { } while (0) | |
d4d90b57 | 142 | #define xfs_icsb_sync_counters(mp, flags) do { } while (0) |
7155054c | 143 | #define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0) |
8d280b98 | 144 | #endif |
1da177e4 LT |
145 | |
146 | typedef struct xfs_mount { | |
b267ce99 | 147 | struct super_block *m_super; |
1da177e4 | 148 | xfs_tid_t m_tid; /* next unused tid for fs */ |
82fa9012 | 149 | struct xfs_ail *m_ail; /* fs active log item list */ |
1da177e4 | 150 | xfs_sb_t m_sb; /* copy of fs superblock */ |
3685c2a1 | 151 | spinlock_t m_sb_lock; /* sb counter lock */ |
1da177e4 LT |
152 | struct xfs_buf *m_sb_bp; /* buffer for superblock */ |
153 | char *m_fsname; /* filesystem name */ | |
154 | int m_fsname_len; /* strlen of fs name */ | |
fc1f8c1c NS |
155 | char *m_rtname; /* realtime device name */ |
156 | char *m_logname; /* external log device name */ | |
1da177e4 LT |
157 | int m_bsize; /* fs logical block size */ |
158 | xfs_agnumber_t m_agfrotor; /* last ag where space found */ | |
159 | xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ | |
36e41eeb | 160 | spinlock_t m_agirotor_lock;/* .. and lock protecting it */ |
1da177e4 | 161 | xfs_agnumber_t m_maxagi; /* highest inode alloc group */ |
1da177e4 LT |
162 | uint m_readio_log; /* min read size log bytes */ |
163 | uint m_readio_blocks; /* min read size blocks */ | |
164 | uint m_writeio_log; /* min write size log bytes */ | |
165 | uint m_writeio_blocks; /* min write size blocks */ | |
166 | struct log *m_log; /* log specific stuff */ | |
167 | int m_logbufs; /* number of log buffers */ | |
168 | int m_logbsize; /* size of each log buffer */ | |
169 | uint m_rsumlevels; /* rt summary levels */ | |
170 | uint m_rsumsize; /* size of rt summary, bytes */ | |
171 | struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ | |
172 | struct xfs_inode *m_rsumip; /* pointer to summary inode */ | |
173 | struct xfs_inode *m_rootip; /* pointer to root directory */ | |
174 | struct xfs_quotainfo *m_quotainfo; /* disk quota information */ | |
175 | xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ | |
176 | xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ | |
177 | xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ | |
1da177e4 LT |
178 | __uint8_t m_blkbit_log; /* blocklog + NBBY */ |
179 | __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ | |
180 | __uint8_t m_agno_log; /* log #ag's */ | |
181 | __uint8_t m_agino_log; /* #bits for agino in inum */ | |
1da177e4 LT |
182 | __uint16_t m_inode_cluster_size;/* min inode buf size */ |
183 | uint m_blockmask; /* sb_blocksize-1 */ | |
184 | uint m_blockwsize; /* sb_blocksize in words */ | |
185 | uint m_blockwmask; /* blockwsize-1 */ | |
60197e8d CH |
186 | uint m_alloc_mxr[2]; /* max alloc btree records */ |
187 | uint m_alloc_mnr[2]; /* min alloc btree records */ | |
188 | uint m_bmap_dmxr[2]; /* max bmap btree records */ | |
189 | uint m_bmap_dmnr[2]; /* min bmap btree records */ | |
190 | uint m_inobt_mxr[2]; /* max inobt btree records */ | |
191 | uint m_inobt_mnr[2]; /* min inobt btree records */ | |
1da177e4 LT |
192 | uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ |
193 | uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ | |
0d87e656 | 194 | uint m_in_maxlevels; /* max inobt btree levels. */ |
1da177e4 LT |
195 | struct xfs_perag *m_perag; /* per-ag accounting info */ |
196 | struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ | |
cc92e7ac | 197 | struct mutex m_growlock; /* growfs mutex */ |
1da177e4 LT |
198 | int m_fixedfsid[2]; /* unchanged for life of FS */ |
199 | uint m_dmevmask; /* DMI events for this FS */ | |
e718eeb4 | 200 | __uint64_t m_flags; /* global mount flags */ |
1da177e4 LT |
201 | uint m_dir_node_ents; /* #entries in a dir danode */ |
202 | uint m_attr_node_ents; /* #entries in attr danode */ | |
203 | int m_ialloc_inos; /* inodes in inode allocation */ | |
204 | int m_ialloc_blks; /* blocks in inode allocation */ | |
1da177e4 LT |
205 | int m_inoalign_mask;/* mask sb_inoalignmt if used */ |
206 | uint m_qflags; /* quota status flags */ | |
207 | xfs_trans_reservations_t m_reservations;/* precomputed res values */ | |
208 | __uint64_t m_maxicount; /* maximum inode count */ | |
209 | __uint64_t m_maxioffset; /* maximum inode offset */ | |
210 | __uint64_t m_resblks; /* total reserved blocks */ | |
211 | __uint64_t m_resblks_avail;/* available reserved blocks */ | |
1da177e4 LT |
212 | int m_dalign; /* stripe unit */ |
213 | int m_swidth; /* stripe width */ | |
c41564b5 | 214 | int m_sinoalign; /* stripe unit inode alignment */ |
1da177e4 LT |
215 | int m_attr_magicpct;/* 37% of the blocksize */ |
216 | int m_dir_magicpct; /* 37% of the dir blocksize */ | |
1da177e4 | 217 | __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ |
5163f95a | 218 | const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */ |
1da177e4 LT |
219 | int m_dirblksize; /* directory block sz--bytes */ |
220 | int m_dirblkfsbs; /* directory block sz--fsbs */ | |
221 | xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ | |
222 | xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ | |
223 | xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ | |
224 | uint m_chsize; /* size of next field */ | |
225 | struct xfs_chash *m_chash; /* fs private inode per-cluster | |
226 | * hash table */ | |
293688ec | 227 | struct xfs_dmops *m_dm_ops; /* vector of DMI ops */ |
b09cc771 | 228 | struct xfs_qmops *m_qm_ops; /* vector of XQM ops */ |
1da177e4 | 229 | atomic_t m_active_trans; /* number trans frozen */ |
8d280b98 DC |
230 | #ifdef HAVE_PERCPU_SB |
231 | xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ | |
232 | unsigned long m_icsb_counters; /* disabled per-cpu counters */ | |
e8234a68 | 233 | struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ |
20b64285 | 234 | struct mutex m_icsb_mutex; /* balancer sync lock */ |
8d280b98 | 235 | #endif |
2a82b8be | 236 | struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ |
74394496 | 237 | struct task_struct *m_sync_task; /* generalised sync thread */ |
a8d770d9 | 238 | xfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */ |
74394496 CH |
239 | struct list_head m_sync_list; /* sync thread work item list */ |
240 | spinlock_t m_sync_lock; /* work item list lock */ | |
241 | int m_sync_seq; /* sync thread generation no. */ | |
242 | wait_queue_head_t m_wait_single_sync_task; | |
7884bc86 CH |
243 | __int64_t m_update_flags; /* sb flags we need to update |
244 | on the next remount,rw */ | |
1da177e4 LT |
245 | } xfs_mount_t; |
246 | ||
247 | /* | |
248 | * Flags for m_flags. | |
249 | */ | |
92821e2b | 250 | #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops |
1da177e4 LT |
251 | must be synchronous except |
252 | for space allocations */ | |
bd186aa9 | 253 | #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */ |
92821e2b | 254 | #define XFS_MOUNT_WAS_CLEAN (1ULL << 3) |
e718eeb4 | 255 | #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem |
1da177e4 LT |
256 | operations, typically for |
257 | disk errors in metadata */ | |
e718eeb4 | 258 | #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to |
1da177e4 | 259 | user */ |
e718eeb4 | 260 | #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment |
1da177e4 | 261 | allocations */ |
13059ff0 | 262 | #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ |
bd186aa9 | 263 | #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */ |
e718eeb4 | 264 | #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ |
e718eeb4 NS |
265 | #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ |
266 | #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ | |
1da177e4 | 267 | /* osyncisdsync is now default*/ |
e718eeb4 | 268 | #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above |
1da177e4 | 269 | * 32 bits in size */ |
bd186aa9 | 270 | #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */ |
e718eeb4 NS |
271 | #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ |
272 | #define XFS_MOUNT_BARRIER (1ULL << 17) | |
1bd960ee | 273 | #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/ |
e718eeb4 | 274 | #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width |
1da177e4 | 275 | * allocation */ |
bd186aa9 | 276 | #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */ |
e718eeb4 NS |
277 | #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ |
278 | #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred | |
e8c8b3a7 | 279 | * I/O size in stat() */ |
8d280b98 DC |
280 | #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock |
281 | counters */ | |
2a82b8be DC |
282 | #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams |
283 | allocator */ | |
7c12f296 | 284 | #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */ |
e8c8b3a7 | 285 | |
1da177e4 LT |
286 | |
287 | /* | |
288 | * Default minimum read and write sizes. | |
289 | */ | |
290 | #define XFS_READIO_LOG_LARGE 16 | |
291 | #define XFS_WRITEIO_LOG_LARGE 16 | |
292 | ||
293 | /* | |
1f443ad7 NS |
294 | * Max and min values for mount-option defined I/O |
295 | * preallocation sizes. | |
1da177e4 | 296 | */ |
1f443ad7 | 297 | #define XFS_MAX_IO_LOG 30 /* 1G */ |
1da177e4 LT |
298 | #define XFS_MIN_IO_LOG PAGE_SHIFT |
299 | ||
300 | /* | |
301 | * Synchronous read and write sizes. This should be | |
302 | * better for NFSv2 wsync filesystems. | |
303 | */ | |
9da096fd MP |
304 | #define XFS_WSYNC_READIO_LOG 15 /* 32k */ |
305 | #define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */ | |
1da177e4 | 306 | |
e8c8b3a7 DC |
307 | /* |
308 | * Allow large block sizes to be reported to userspace programs if the | |
556b8b16 | 309 | * "largeio" mount option is used. |
e8c8b3a7 DC |
310 | * |
311 | * If compatibility mode is specified, simply return the basic unit of caching | |
312 | * so that we don't get inefficient read/modify/write I/O from user apps. | |
313 | * Otherwise.... | |
314 | * | |
315 | * If the underlying volume is a stripe, then return the stripe width in bytes | |
316 | * as the recommended I/O size. It is not a stripe and we've set a default | |
317 | * buffered I/O size, return that, otherwise return the compat default. | |
318 | */ | |
319 | static inline unsigned long | |
320 | xfs_preferred_iosize(xfs_mount_t *mp) | |
321 | { | |
322 | if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) | |
323 | return PAGE_CACHE_SIZE; | |
324 | return (mp->m_swidth ? | |
325 | (mp->m_swidth << mp->m_sb.sb_blocklog) : | |
326 | ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? | |
327 | (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : | |
328 | PAGE_CACHE_SIZE)); | |
329 | } | |
330 | ||
1da177e4 LT |
331 | #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) |
332 | ||
92821e2b DC |
333 | #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ |
334 | ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) | |
1da177e4 | 335 | #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) |
745f6919 CH |
336 | void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, |
337 | int lnnum); | |
1da177e4 | 338 | #define xfs_force_shutdown(m,f) \ |
745f6919 | 339 | xfs_do_force_shutdown(m, f, __FILE__, __LINE__) |
1da177e4 | 340 | |
2b5decd0 CH |
341 | #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */ |
342 | #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */ | |
343 | #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */ | |
344 | #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */ | |
345 | #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */ | |
346 | #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */ | |
347 | ||
348 | #define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen) | |
349 | #define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l)) | |
350 | ||
1da177e4 LT |
351 | /* |
352 | * Flags for xfs_mountfs | |
353 | */ | |
764d1f89 | 354 | #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ |
1da177e4 | 355 | |
a844f451 NS |
356 | static inline xfs_agnumber_t |
357 | xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 358 | { |
a844f451 NS |
359 | xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
360 | do_div(ld, mp->m_sb.sb_agblocks); | |
361 | return (xfs_agnumber_t) ld; | |
1da177e4 LT |
362 | } |
363 | ||
a844f451 NS |
364 | static inline xfs_agblock_t |
365 | xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 366 | { |
a844f451 NS |
367 | xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
368 | return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); | |
1da177e4 LT |
369 | } |
370 | ||
da353b0d DC |
371 | /* |
372 | * perag get/put wrappers for eventual ref counting | |
373 | */ | |
374 | static inline xfs_perag_t * | |
375 | xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino) | |
376 | { | |
377 | return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)]; | |
378 | } | |
379 | ||
380 | static inline void | |
381 | xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag) | |
382 | { | |
383 | /* nothing to see here, move along */ | |
384 | } | |
385 | ||
03135cf7 DC |
386 | /* |
387 | * Per-cpu superblock locking functions | |
388 | */ | |
389 | #ifdef HAVE_PERCPU_SB | |
390 | STATIC_INLINE void | |
391 | xfs_icsb_lock(xfs_mount_t *mp) | |
392 | { | |
393 | mutex_lock(&mp->m_icsb_mutex); | |
394 | } | |
395 | ||
396 | STATIC_INLINE void | |
397 | xfs_icsb_unlock(xfs_mount_t *mp) | |
398 | { | |
399 | mutex_unlock(&mp->m_icsb_mutex); | |
400 | } | |
401 | #else | |
402 | #define xfs_icsb_lock(mp) | |
403 | #define xfs_icsb_unlock(mp) | |
404 | #endif | |
405 | ||
1da177e4 LT |
406 | /* |
407 | * This structure is for use by the xfs_mod_incore_sb_batch() routine. | |
20f4ebf2 | 408 | * xfs_growfs can specify a few fields which are more than int limit |
1da177e4 LT |
409 | */ |
410 | typedef struct xfs_mod_sb { | |
411 | xfs_sb_field_t msb_field; /* Field to modify, see below */ | |
20f4ebf2 | 412 | int64_t msb_delta; /* Change to make to specified field */ |
1da177e4 LT |
413 | } xfs_mod_sb_t; |
414 | ||
92821e2b | 415 | extern int xfs_log_sbcount(xfs_mount_t *, uint); |
4249023a | 416 | extern int xfs_mountfs(xfs_mount_t *mp); |
f538d4da | 417 | extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); |
1da177e4 | 418 | |
41b5c2e7 | 419 | extern void xfs_unmountfs(xfs_mount_t *); |
1da177e4 | 420 | extern int xfs_unmountfs_writesb(xfs_mount_t *); |
20f4ebf2 | 421 | extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int); |
8d280b98 | 422 | extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, |
20f4ebf2 | 423 | int64_t, int); |
1da177e4 LT |
424 | extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, |
425 | uint, int); | |
7884bc86 | 426 | extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t); |
1da177e4 | 427 | extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); |
764d1f89 | 428 | extern int xfs_readsb(xfs_mount_t *, int); |
1da177e4 | 429 | extern void xfs_freesb(xfs_mount_t *); |
92821e2b | 430 | extern int xfs_fs_writable(xfs_mount_t *); |
4cc929ee | 431 | extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t); |
1da177e4 | 432 | |
9d565ffa | 433 | extern int xfs_dmops_get(struct xfs_mount *); |
293688ec CH |
434 | extern void xfs_dmops_put(struct xfs_mount *); |
435 | ||
436 | extern struct xfs_dmops xfs_dmcore_xfs; | |
1da177e4 | 437 | |
1da177e4 LT |
438 | #endif /* __KERNEL__ */ |
439 | ||
847fff5c BN |
440 | extern void xfs_mod_sb(struct xfs_trans *, __int64_t); |
441 | extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t); | |
442 | extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); | |
443 | extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); | |
444 | ||
1da177e4 | 445 | #endif /* __XFS_MOUNT_H__ */ |