1 /*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18 #ifndef __XFS_MOUNT_H__
19 #define __XFS_MOUNT_H__
20
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
45 #ifndef __KERNEL__
46
47 #define xfs_daddr_to_agno(mp,d) \
48 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
49 #define xfs_daddr_to_agbno(mp,d) \
50 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
51
52 #else /* __KERNEL__ */
53
54 #include "xfs_sync.h"
55
56 struct cred;
57 struct log;
58 struct xfs_mount_args;
59 struct xfs_inode;
60 struct xfs_bmbt_irec;
61 struct xfs_bmap_free;
62 struct xfs_extdelta;
63 struct xfs_swapext;
64 struct xfs_mru_cache;
65 struct xfs_nameops;
66 struct xfs_ail;
67
68 /*
69 * Prototypes and functions for the Data Migration subsystem.
70 */
71
72 typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
73 xfs_off_t, size_t, int, int *);
74 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
75 typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
76 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
77 struct xfs_inode *, dm_right_t,
78 struct xfs_inode *, dm_right_t,
79 const char *, const char *, mode_t, int, int);
80 typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
81 char *, char *);
82 typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
83 dm_right_t, mode_t, int, int);
84
85 typedef struct xfs_dmops {
86 xfs_send_data_t xfs_send_data;
87 xfs_send_mmap_t xfs_send_mmap;
88 xfs_send_destroy_t xfs_send_destroy;
89 xfs_send_namesp_t xfs_send_namesp;
90 xfs_send_mount_t xfs_send_mount;
91 xfs_send_unmount_t xfs_send_unmount;
92 } xfs_dmops_t;
93
94 #define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
95 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
96 #define XFS_SEND_MMAP(mp, vma,fl) \
97 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
98 #define XFS_SEND_DESTROY(mp, ip,right) \
99 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
100 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
101 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
102 #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
103 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl)
104 #define XFS_SEND_MOUNT(mp,right,path,name) \
105 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
106 #define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
107 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
108
109
110 /*
111 * Prototypes and functions for the Quota Management subsystem.
112 */
113
114 struct xfs_dquot;
115 struct xfs_dqtrxops;
116 struct xfs_quotainfo;
117
118 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
119 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint);
120 typedef void (*xfs_qmunmount_t)(struct xfs_mount *);
121 typedef void (*xfs_qmdone_t)(struct xfs_mount *);
122 typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
123 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
124 typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
125 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
126 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
127 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
128 struct xfs_dquot **, struct xfs_dquot **);
129 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
130 struct xfs_dquot *, struct xfs_dquot *);
131 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
132 typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
133 struct xfs_trans *, struct xfs_inode *,
134 struct xfs_dquot **, struct xfs_dquot *);
135 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
136 struct xfs_dquot *, struct xfs_dquot *, uint);
137 typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, struct kstatfs *);
138 typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags);
139 typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t);
140
141 typedef struct xfs_qmops {
142 xfs_qminit_t xfs_qminit;
143 xfs_qmdone_t xfs_qmdone;
144 xfs_qmmount_t xfs_qmmount;
145 xfs_qmunmount_t xfs_qmunmount;
146 xfs_dqrele_t xfs_dqrele;
147 xfs_dqattach_t xfs_dqattach;
148 xfs_dqdetach_t xfs_dqdetach;
149 xfs_dqpurgeall_t xfs_dqpurgeall;
150 xfs_dqvopalloc_t xfs_dqvopalloc;
151 xfs_dqvopcreate_t xfs_dqvopcreate;
152 xfs_dqvoprename_t xfs_dqvoprename;
153 xfs_dqvopchown_t xfs_dqvopchown;
154 xfs_dqvopchownresv_t xfs_dqvopchownresv;
155 xfs_dqstatvfs_t xfs_dqstatvfs;
156 xfs_dqsync_t xfs_dqsync;
157 xfs_quotactl_t xfs_quotactl;
158 struct xfs_dqtrxops *xfs_dqtrxops;
159 } xfs_qmops_t;
160
161 #define XFS_QM_INIT(mp, mnt, fl) \
162 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
163 #define XFS_QM_MOUNT(mp, mnt, fl) \
164 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl)
165 #define XFS_QM_UNMOUNT(mp) \
166 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
167 #define XFS_QM_DONE(mp) \
168 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
169 #define XFS_QM_DQRELE(mp, dq) \
170 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
171 #define XFS_QM_DQATTACH(mp, ip, fl) \
172 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
173 #define XFS_QM_DQDETACH(mp, ip) \
174 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
175 #define XFS_QM_DQPURGEALL(mp, fl) \
176 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
177 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
178 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
179 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
180 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
181 #define XFS_QM_DQVOPRENAME(mp, ip) \
182 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
183 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
184 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
185 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
186 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
187 #define XFS_QM_DQSTATVFS(ip, statp) \
188 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
189 #define XFS_QM_DQSYNC(mp, flags) \
190 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
191 #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
192 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
193
194 #ifdef HAVE_PERCPU_SB
195
196 /*
197 * Valid per-cpu incore superblock counters. Note that if you add new counters,
198 * you may need to define new counter disabled bit field descriptors as there
199 * are more possible fields in the superblock that can fit in a bitfield on a
200 * 32 bit platform. The XFS_SBS_* values for the current current counters just
201 * fit.
202 */
203 typedef struct xfs_icsb_cnts {
204 uint64_t icsb_fdblocks;
205 uint64_t icsb_ifree;
206 uint64_t icsb_icount;
207 unsigned long icsb_flags;
208 } xfs_icsb_cnts_t;
209
210 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
211
212 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
213
214 extern int xfs_icsb_init_counters(struct xfs_mount *);
215 extern void xfs_icsb_reinit_counters(struct xfs_mount *);
216 extern void xfs_icsb_destroy_counters(struct xfs_mount *);
217 extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
218 extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
219
220 #else
221 #define xfs_icsb_init_counters(mp) (0)
222 #define xfs_icsb_destroy_counters(mp) do { } while (0)
223 #define xfs_icsb_reinit_counters(mp) do { } while (0)
224 #define xfs_icsb_sync_counters(mp, flags) do { } while (0)
225 #define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
226 #endif
227
228 typedef struct xfs_mount {
229 struct super_block *m_super;
230 xfs_tid_t m_tid; /* next unused tid for fs */
231 struct xfs_ail *m_ail; /* fs active log item list */
232 xfs_sb_t m_sb; /* copy of fs superblock */
233 spinlock_t m_sb_lock; /* sb counter lock */
234 struct xfs_buf *m_sb_bp; /* buffer for superblock */
235 char *m_fsname; /* filesystem name */
236 int m_fsname_len; /* strlen of fs name */
237 char *m_rtname; /* realtime device name */
238 char *m_logname; /* external log device name */
239 int m_bsize; /* fs logical block size */
240 xfs_agnumber_t m_agfrotor; /* last ag where space found */
241 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
242 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
243 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
244 uint m_readio_log; /* min read size log bytes */
245 uint m_readio_blocks; /* min read size blocks */
246 uint m_writeio_log; /* min write size log bytes */
247 uint m_writeio_blocks; /* min write size blocks */
248 struct log *m_log; /* log specific stuff */
249 int m_logbufs; /* number of log buffers */
250 int m_logbsize; /* size of each log buffer */
251 uint m_rsumlevels; /* rt summary levels */
252 uint m_rsumsize; /* size of rt summary, bytes */
253 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
254 struct xfs_inode *m_rsumip; /* pointer to summary inode */
255 struct xfs_inode *m_rootip; /* pointer to root directory */
256 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
257 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
258 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
259 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
260 __uint8_t m_blkbit_log; /* blocklog + NBBY */
261 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
262 __uint8_t m_agno_log; /* log #ag's */
263 __uint8_t m_agino_log; /* #bits for agino in inum */
264 __uint16_t m_inode_cluster_size;/* min inode buf size */
265 uint m_blockmask; /* sb_blocksize-1 */
266 uint m_blockwsize; /* sb_blocksize in words */
267 uint m_blockwmask; /* blockwsize-1 */
268 uint m_alloc_mxr[2]; /* max alloc btree records */
269 uint m_alloc_mnr[2]; /* min alloc btree records */
270 uint m_bmap_dmxr[2]; /* max bmap btree records */
271 uint m_bmap_dmnr[2]; /* min bmap btree records */
272 uint m_inobt_mxr[2]; /* max inobt btree records */
273 uint m_inobt_mnr[2]; /* min inobt btree records */
274 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
275 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
276 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
277 struct xfs_perag *m_perag; /* per-ag accounting info */
278 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
279 struct mutex m_growlock; /* growfs mutex */
280 int m_fixedfsid[2]; /* unchanged for life of FS */
281 uint m_dmevmask; /* DMI events for this FS */
282 __uint64_t m_flags; /* global mount flags */
283 uint m_attroffset; /* inode attribute offset */
284 uint m_dir_node_ents; /* #entries in a dir danode */
285 uint m_attr_node_ents; /* #entries in attr danode */
286 int m_ialloc_inos; /* inodes in inode allocation */
287 int m_ialloc_blks; /* blocks in inode allocation */
288 int m_litino; /* size of inode union area */
289 int m_inoalign_mask;/* mask sb_inoalignmt if used */
290 uint m_qflags; /* quota status flags */
291 xfs_trans_reservations_t m_reservations;/* precomputed res values */
292 __uint64_t m_maxicount; /* maximum inode count */
293 __uint64_t m_maxioffset; /* maximum inode offset */
294 __uint64_t m_resblks; /* total reserved blocks */
295 __uint64_t m_resblks_avail;/* available reserved blocks */
296 #if XFS_BIG_INUMS
297 xfs_ino_t m_inoadd; /* add value for ino64_offset */
298 #endif
299 int m_dalign; /* stripe unit */
300 int m_swidth; /* stripe width */
301 int m_sinoalign; /* stripe unit inode alignment */
302 int m_attr_magicpct;/* 37% of the blocksize */
303 int m_dir_magicpct; /* 37% of the dir blocksize */
304 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
305 const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
306 int m_dirblksize; /* directory block sz--bytes */
307 int m_dirblkfsbs; /* directory block sz--fsbs */
308 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
309 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
310 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
311 uint m_chsize; /* size of next field */
312 struct xfs_chash *m_chash; /* fs private inode per-cluster
313 * hash table */
314 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
315 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
316 atomic_t m_active_trans; /* number trans frozen */
317 #ifdef HAVE_PERCPU_SB
318 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
319 unsigned long m_icsb_counters; /* disabled per-cpu counters */
320 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
321 struct mutex m_icsb_mutex; /* balancer sync lock */
322 #endif
323 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
324 struct task_struct *m_sync_task; /* generalised sync thread */
325 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
326 struct list_head m_sync_list; /* sync thread work item list */
327 spinlock_t m_sync_lock; /* work item list lock */
328 int m_sync_seq; /* sync thread generation no. */
329 wait_queue_head_t m_wait_single_sync_task;
330 __int64_t m_update_flags; /* sb flags we need to update
331 on the next remount,rw */
332 } xfs_mount_t;
333
334 /*
335 * Flags for m_flags.
336 */
337 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
338 must be synchronous except
339 for space allocations */
340 #define XFS_MOUNT_INO64 (1ULL << 1)
341 #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
342 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
343 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
344 operations, typically for
345 disk errors in metadata */
346 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
347 user */
348 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
349 allocations */
350 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
351 #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
352 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
353 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
354 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
355 /* osyncisdsync is now default*/
356 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
357 * 32 bits in size */
358 #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
359 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
360 #define XFS_MOUNT_BARRIER (1ULL << 17)
361 #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
362 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
363 * allocation */
364 #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
365 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
366 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
367 * I/O size in stat() */
368 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
369 counters */
370 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
371 allocator */
372 #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
373
374
375 /*
376 * Default minimum read and write sizes.
377 */
378 #define XFS_READIO_LOG_LARGE 16
379 #define XFS_WRITEIO_LOG_LARGE 16
380
381 /*
382 * Max and min values for mount-option defined I/O
383 * preallocation sizes.
384 */
385 #define XFS_MAX_IO_LOG 30 /* 1G */
386 #define XFS_MIN_IO_LOG PAGE_SHIFT
387
388 /*
389 * Synchronous read and write sizes. This should be
390 * better for NFSv2 wsync filesystems.
391 */
392 #define XFS_WSYNC_READIO_LOG 15 /* 32K */
393 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
394
395 /*
396 * Allow large block sizes to be reported to userspace programs if the
397 * "largeio" mount option is used.
398 *
399 * If compatibility mode is specified, simply return the basic unit of caching
400 * so that we don't get inefficient read/modify/write I/O from user apps.
401 * Otherwise....
402 *
403 * If the underlying volume is a stripe, then return the stripe width in bytes
404 * as the recommended I/O size. It is not a stripe and we've set a default
405 * buffered I/O size, return that, otherwise return the compat default.
406 */
407 static inline unsigned long
xfs_preferred_iosize(xfs_mount_t * mp)408 xfs_preferred_iosize(xfs_mount_t *mp)
409 {
410 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
411 return PAGE_CACHE_SIZE;
412 return (mp->m_swidth ?
413 (mp->m_swidth << mp->m_sb.sb_blocklog) :
414 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
415 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
416 PAGE_CACHE_SIZE));
417 }
418
419 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
420
421 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
422 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
423 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
424 void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
425 int lnnum);
426 #define xfs_force_shutdown(m,f) \
427 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
428
429 #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
430 #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
431 #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
432 #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
433 #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
434 #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
435
436 #define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen)
437 #define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l))
438
439 /*
440 * Flags for xfs_mountfs
441 */
442 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
443
444 static inline xfs_agnumber_t
xfs_daddr_to_agno(struct xfs_mount * mp,xfs_daddr_t d)445 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
446 {
447 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
448 do_div(ld, mp->m_sb.sb_agblocks);
449 return (xfs_agnumber_t) ld;
450 }
451
452 static inline xfs_agblock_t
xfs_daddr_to_agbno(struct xfs_mount * mp,xfs_daddr_t d)453 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
454 {
455 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
456 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
457 }
458
459 /*
460 * perag get/put wrappers for eventual ref counting
461 */
462 static inline xfs_perag_t *
xfs_get_perag(struct xfs_mount * mp,xfs_ino_t ino)463 xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
464 {
465 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
466 }
467
468 static inline void
xfs_put_perag(struct xfs_mount * mp,xfs_perag_t * pag)469 xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
470 {
471 /* nothing to see here, move along */
472 }
473
474 /*
475 * Per-cpu superblock locking functions
476 */
477 #ifdef HAVE_PERCPU_SB
478 STATIC_INLINE void
xfs_icsb_lock(xfs_mount_t * mp)479 xfs_icsb_lock(xfs_mount_t *mp)
480 {
481 mutex_lock(&mp->m_icsb_mutex);
482 }
483
484 STATIC_INLINE void
xfs_icsb_unlock(xfs_mount_t * mp)485 xfs_icsb_unlock(xfs_mount_t *mp)
486 {
487 mutex_unlock(&mp->m_icsb_mutex);
488 }
489 #else
490 #define xfs_icsb_lock(mp)
491 #define xfs_icsb_unlock(mp)
492 #endif
493
494 /*
495 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
496 * xfs_growfs can specify a few fields which are more than int limit
497 */
498 typedef struct xfs_mod_sb {
499 xfs_sb_field_t msb_field; /* Field to modify, see below */
500 int64_t msb_delta; /* Change to make to specified field */
501 } xfs_mod_sb_t;
502
503 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
504 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
505
506 extern int xfs_log_sbcount(xfs_mount_t *, uint);
507 extern int xfs_mountfs(xfs_mount_t *mp);
508 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
509
510 extern void xfs_unmountfs(xfs_mount_t *);
511 extern int xfs_unmountfs_writesb(xfs_mount_t *);
512 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
513 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
514 int64_t, int);
515 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
516 uint, int);
517 extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t);
518 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
519 extern int xfs_readsb(xfs_mount_t *, int);
520 extern void xfs_freesb(xfs_mount_t *);
521 extern int xfs_fs_writable(xfs_mount_t *);
522 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
523
524 extern int xfs_dmops_get(struct xfs_mount *);
525 extern void xfs_dmops_put(struct xfs_mount *);
526 extern int xfs_qmops_get(struct xfs_mount *);
527 extern void xfs_qmops_put(struct xfs_mount *);
528
529 extern struct xfs_dmops xfs_dmcore_xfs;
530
531 #endif /* __KERNEL__ */
532
533 extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
534 extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t);
535 extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
536 extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
537
538 #endif /* __XFS_MOUNT_H__ */
539