2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
18 #ifndef __XFS_MOUNT_H__
19 #define __XFS_MOUNT_H__
22 typedef struct xfs_trans_reservations {
23 uint tr_write; /* extent alloc trans */
24 uint tr_itruncate; /* truncate trans */
25 uint tr_rename; /* rename trans */
26 uint tr_link; /* link trans */
27 uint tr_remove; /* unlink trans */
28 uint tr_symlink; /* symlink trans */
29 uint tr_create; /* create trans */
30 uint tr_mkdir; /* mkdir trans */
31 uint tr_ifree; /* inode free trans */
32 uint tr_ichange; /* inode update trans */
33 uint tr_growdata; /* fs data section grow trans */
34 uint tr_swrite; /* sync write inode trans */
35 uint tr_addafork; /* cvt inode to attributed trans */
36 uint tr_writeid; /* write setuid/setgid file */
37 uint tr_attrinval; /* attr fork buffer invalidation */
38 uint tr_attrset; /* set/create an attribute */
39 uint tr_attrrm; /* remove an attribute */
40 uint tr_clearagi; /* clear bad agi unlinked ino bucket */
41 uint tr_growrtalloc; /* grow realtime allocations */
42 uint tr_growrtzero; /* grow realtime zeroing */
43 uint tr_growrtfree; /* grow realtime freeing */
44 } xfs_trans_reservations_t;
48 * Moved here from xfs_ag.h to avoid reordering header files
50 #define XFS_DADDR_TO_AGNO(mp,d) \
51 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
52 #define XFS_DADDR_TO_AGBNO(mp,d) \
53 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
57 struct xfs_mount_args;
67 * Prototypes and functions for the Data Migration subsystem.
70 typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
71 xfs_off_t, size_t, int, int *);
72 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
73 typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
74 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
75 struct xfs_inode *, dm_right_t,
76 struct xfs_inode *, dm_right_t,
77 const char *, const char *, mode_t, int, int);
78 typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
80 typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
81 dm_right_t, mode_t, int, int);
83 typedef struct xfs_dmops {
84 xfs_send_data_t xfs_send_data;
85 xfs_send_mmap_t xfs_send_mmap;
86 xfs_send_destroy_t xfs_send_destroy;
87 xfs_send_namesp_t xfs_send_namesp;
88 xfs_send_mount_t xfs_send_mount;
89 xfs_send_unmount_t xfs_send_unmount;
92 #define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
93 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
94 #define XFS_SEND_MMAP(mp, vma,fl) \
95 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
96 #define XFS_SEND_DESTROY(mp, ip,right) \
97 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
98 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
99 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
100 #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
101 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl)
102 #define XFS_SEND_MOUNT(mp,right,path,name) \
103 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
104 #define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
105 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
109 * Prototypes and functions for the Quota Management subsystem.
114 struct xfs_quotainfo;
116 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
117 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint);
118 typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
119 typedef void (*xfs_qmdone_t)(struct xfs_mount *);
120 typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
121 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
122 typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
123 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
124 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
125 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
126 struct xfs_dquot **, struct xfs_dquot **);
127 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
128 struct xfs_dquot *, struct xfs_dquot *);
129 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
130 typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
131 struct xfs_trans *, struct xfs_inode *,
132 struct xfs_dquot **, struct xfs_dquot *);
133 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
134 struct xfs_dquot *, struct xfs_dquot *, uint);
135 typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, bhv_statvfs_t *);
136 typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags);
137 typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t);
139 typedef struct xfs_qmops {
140 xfs_qminit_t xfs_qminit;
141 xfs_qmdone_t xfs_qmdone;
142 xfs_qmmount_t xfs_qmmount;
143 xfs_qmunmount_t xfs_qmunmount;
144 xfs_dqrele_t xfs_dqrele;
145 xfs_dqattach_t xfs_dqattach;
146 xfs_dqdetach_t xfs_dqdetach;
147 xfs_dqpurgeall_t xfs_dqpurgeall;
148 xfs_dqvopalloc_t xfs_dqvopalloc;
149 xfs_dqvopcreate_t xfs_dqvopcreate;
150 xfs_dqvoprename_t xfs_dqvoprename;
151 xfs_dqvopchown_t xfs_dqvopchown;
152 xfs_dqvopchownresv_t xfs_dqvopchownresv;
153 xfs_dqstatvfs_t xfs_dqstatvfs;
154 xfs_dqsync_t xfs_dqsync;
155 xfs_quotactl_t xfs_quotactl;
156 struct xfs_dqtrxops *xfs_dqtrxops;
159 #define XFS_QM_INIT(mp, mnt, fl) \
160 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
161 #define XFS_QM_MOUNT(mp, mnt, fl) \
162 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl)
163 #define XFS_QM_UNMOUNT(mp) \
164 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
165 #define XFS_QM_DONE(mp) \
166 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
167 #define XFS_QM_DQRELE(mp, dq) \
168 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
169 #define XFS_QM_DQATTACH(mp, ip, fl) \
170 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
171 #define XFS_QM_DQDETACH(mp, ip) \
172 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
173 #define XFS_QM_DQPURGEALL(mp, fl) \
174 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
175 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
176 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
177 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
178 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
179 #define XFS_QM_DQVOPRENAME(mp, ip) \
180 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
181 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
182 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
183 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
184 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
185 #define XFS_QM_DQSTATVFS(ip, statp) \
186 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
187 #define XFS_QM_DQSYNC(mp, flags) \
188 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
189 #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
190 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
192 #ifdef HAVE_PERCPU_SB
195 * Valid per-cpu incore superblock counters. Note that if you add new counters,
196 * you may need to define new counter disabled bit field descriptors as there
197 * are more possible fields in the superblock that can fit in a bitfield on a
198 * 32 bit platform. The XFS_SBS_* values for the current current counters just
201 typedef struct xfs_icsb_cnts {
202 uint64_t icsb_fdblocks;
204 uint64_t icsb_icount;
205 unsigned long icsb_flags;
208 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
210 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
212 extern int xfs_icsb_init_counters(struct xfs_mount *);
213 extern void xfs_icsb_reinit_counters(struct xfs_mount *);
214 extern void xfs_icsb_destroy_counters(struct xfs_mount *);
215 extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
216 extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
219 #define xfs_icsb_init_counters(mp) (0)
220 #define xfs_icsb_destroy_counters(mp) do { } while (0)
221 #define xfs_icsb_reinit_counters(mp) do { } while (0)
222 #define xfs_icsb_sync_counters(mp, flags) do { } while (0)
223 #define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
226 typedef struct xfs_ail {
227 struct list_head xa_ail;
229 struct task_struct *xa_task;
233 typedef struct xfs_mount {
234 struct super_block *m_super;
235 xfs_tid_t m_tid; /* next unused tid for fs */
236 spinlock_t m_ail_lock; /* fs AIL mutex */
237 xfs_ail_t m_ail; /* fs active log item list */
238 xfs_sb_t m_sb; /* copy of fs superblock */
239 spinlock_t m_sb_lock; /* sb counter lock */
240 struct xfs_buf *m_sb_bp; /* buffer for superblock */
241 char *m_fsname; /* filesystem name */
242 int m_fsname_len; /* strlen of fs name */
243 char *m_rtname; /* realtime device name */
244 char *m_logname; /* external log device name */
245 int m_bsize; /* fs logical block size */
246 xfs_agnumber_t m_agfrotor; /* last ag where space found */
247 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
248 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
249 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
250 struct xfs_inode *m_inodes; /* active inode list */
251 struct list_head m_del_inodes; /* inodes to reclaim */
252 mutex_t m_ilock; /* inode list mutex */
253 uint m_ireclaims; /* count of calls to reclaim*/
254 uint m_readio_log; /* min read size log bytes */
255 uint m_readio_blocks; /* min read size blocks */
256 uint m_writeio_log; /* min write size log bytes */
257 uint m_writeio_blocks; /* min write size blocks */
258 struct log *m_log; /* log specific stuff */
259 int m_logbufs; /* number of log buffers */
260 int m_logbsize; /* size of each log buffer */
261 uint m_rsumlevels; /* rt summary levels */
262 uint m_rsumsize; /* size of rt summary, bytes */
263 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
264 struct xfs_inode *m_rsumip; /* pointer to summary inode */
265 struct xfs_inode *m_rootip; /* pointer to root directory */
266 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
267 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
268 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
269 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
270 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
271 __uint8_t m_blkbit_log; /* blocklog + NBBY */
272 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
273 __uint8_t m_agno_log; /* log #ag's */
274 __uint8_t m_agino_log; /* #bits for agino in inum */
275 __uint16_t m_inode_cluster_size;/* min inode buf size */
276 uint m_blockmask; /* sb_blocksize-1 */
277 uint m_blockwsize; /* sb_blocksize in words */
278 uint m_blockwmask; /* blockwsize-1 */
279 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
280 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
281 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
282 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
283 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
284 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
285 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
286 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
287 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
288 struct xfs_perag *m_perag; /* per-ag accounting info */
289 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
290 struct mutex m_growlock; /* growfs mutex */
291 int m_fixedfsid[2]; /* unchanged for life of FS */
292 uint m_dmevmask; /* DMI events for this FS */
293 __uint64_t m_flags; /* global mount flags */
294 uint m_attroffset; /* inode attribute offset */
295 uint m_dir_node_ents; /* #entries in a dir danode */
296 uint m_attr_node_ents; /* #entries in attr danode */
297 int m_ialloc_inos; /* inodes in inode allocation */
298 int m_ialloc_blks; /* blocks in inode allocation */
299 int m_litino; /* size of inode union area */
300 int m_inoalign_mask;/* mask sb_inoalignmt if used */
301 uint m_qflags; /* quota status flags */
302 xfs_trans_reservations_t m_reservations;/* precomputed res values */
303 __uint64_t m_maxicount; /* maximum inode count */
304 __uint64_t m_maxioffset; /* maximum inode offset */
305 __uint64_t m_resblks; /* total reserved blocks */
306 __uint64_t m_resblks_avail;/* available reserved blocks */
308 xfs_ino_t m_inoadd; /* add value for ino64_offset */
310 int m_dalign; /* stripe unit */
311 int m_swidth; /* stripe width */
312 int m_sinoalign; /* stripe unit inode alignment */
313 int m_attr_magicpct;/* 37% of the blocksize */
314 int m_dir_magicpct; /* 37% of the dir blocksize */
315 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
316 __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
317 field governed by m_ilock */
318 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
319 const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
320 int m_dirblksize; /* directory block sz--bytes */
321 int m_dirblkfsbs; /* directory block sz--fsbs */
322 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
323 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
324 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
325 uint m_chsize; /* size of next field */
326 struct xfs_chash *m_chash; /* fs private inode per-cluster
328 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
329 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
330 atomic_t m_active_trans; /* number trans frozen */
331 #ifdef HAVE_PERCPU_SB
332 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
333 unsigned long m_icsb_counters; /* disabled per-cpu counters */
334 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
335 struct mutex m_icsb_mutex; /* balancer sync lock */
337 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
338 struct task_struct *m_sync_task; /* generalised sync thread */
339 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
340 struct list_head m_sync_list; /* sync thread work item list */
341 spinlock_t m_sync_lock; /* work item list lock */
342 int m_sync_seq; /* sync thread generation no. */
343 wait_queue_head_t m_wait_single_sync_task;
349 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
350 must be synchronous except
351 for space allocations */
352 #define XFS_MOUNT_INO64 (1ULL << 1)
353 #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
354 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
355 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
356 operations, typically for
357 disk errors in metadata */
358 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
360 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
362 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
363 #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
364 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
365 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
366 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
367 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
368 /* osyncisdsync is now default*/
369 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
371 #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
372 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
373 #define XFS_MOUNT_BARRIER (1ULL << 17)
374 #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
375 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
377 #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
378 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
379 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
380 * I/O size in stat() */
381 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
383 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
385 #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
389 * Default minimum read and write sizes.
391 #define XFS_READIO_LOG_LARGE 16
392 #define XFS_WRITEIO_LOG_LARGE 16
395 * Max and min values for mount-option defined I/O
396 * preallocation sizes.
398 #define XFS_MAX_IO_LOG 30 /* 1G */
399 #define XFS_MIN_IO_LOG PAGE_SHIFT
402 * Synchronous read and write sizes. This should be
403 * better for NFSv2 wsync filesystems.
405 #define XFS_WSYNC_READIO_LOG 15 /* 32K */
406 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
409 * Allow large block sizes to be reported to userspace programs if the
410 * "largeio" mount option is used.
412 * If compatibility mode is specified, simply return the basic unit of caching
413 * so that we don't get inefficient read/modify/write I/O from user apps.
416 * If the underlying volume is a stripe, then return the stripe width in bytes
417 * as the recommended I/O size. It is not a stripe and we've set a default
418 * buffered I/O size, return that, otherwise return the compat default.
420 static inline unsigned long
421 xfs_preferred_iosize(xfs_mount_t *mp)
423 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
424 return PAGE_CACHE_SIZE;
425 return (mp->m_swidth ?
426 (mp->m_swidth << mp->m_sb.sb_blocklog) :
427 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
428 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
432 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
434 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
435 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
436 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
437 void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
439 #define xfs_force_shutdown(m,f) \
440 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
443 * Flags for xfs_mountfs
445 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
447 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
448 static inline xfs_agnumber_t
449 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
451 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
452 do_div(ld, mp->m_sb.sb_agblocks);
453 return (xfs_agnumber_t) ld;
456 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
457 static inline xfs_agblock_t
458 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
460 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
461 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
465 * perag get/put wrappers for eventual ref counting
467 static inline xfs_perag_t *
468 xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
470 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
474 xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
476 /* nothing to see here, move along */
480 * Per-cpu superblock locking functions
482 #ifdef HAVE_PERCPU_SB
484 xfs_icsb_lock(xfs_mount_t *mp)
486 mutex_lock(&mp->m_icsb_mutex);
490 xfs_icsb_unlock(xfs_mount_t *mp)
492 mutex_unlock(&mp->m_icsb_mutex);
495 #define xfs_icsb_lock(mp)
496 #define xfs_icsb_unlock(mp)
500 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
501 * xfs_growfs can specify a few fields which are more than int limit
503 typedef struct xfs_mod_sb {
504 xfs_sb_field_t msb_field; /* Field to modify, see below */
505 int64_t msb_delta; /* Change to make to specified field */
508 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
509 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
511 extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
512 extern int xfs_log_sbcount(xfs_mount_t *, uint);
513 extern int xfs_mountfs(xfs_mount_t *mp);
514 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
516 extern void xfs_unmountfs(xfs_mount_t *);
517 extern int xfs_unmountfs_writesb(xfs_mount_t *);
518 extern int xfs_unmount_flush(xfs_mount_t *, int);
519 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
520 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
522 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
524 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
525 extern int xfs_readsb(xfs_mount_t *, int);
526 extern void xfs_freesb(xfs_mount_t *);
527 extern int xfs_fs_writable(xfs_mount_t *);
528 extern int xfs_syncsub(xfs_mount_t *, int, int *);
529 extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
530 extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
531 extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
532 extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
533 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
535 extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *);
536 extern void xfs_dmops_put(struct xfs_mount *);
537 extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *);
538 extern void xfs_qmops_put(struct xfs_mount *);
540 extern struct xfs_dmops xfs_dmcore_xfs;
542 #endif /* __KERNEL__ */
544 #endif /* __XFS_MOUNT_H__ */