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__
23 typedef struct xfs_trans_reservations
{
24 uint tr_write
; /* extent alloc trans */
25 uint tr_itruncate
; /* truncate trans */
26 uint tr_rename
; /* rename trans */
27 uint tr_link
; /* link trans */
28 uint tr_remove
; /* unlink trans */
29 uint tr_symlink
; /* symlink trans */
30 uint tr_create
; /* create trans */
31 uint tr_mkdir
; /* mkdir trans */
32 uint tr_ifree
; /* inode free trans */
33 uint tr_ichange
; /* inode update trans */
34 uint tr_growdata
; /* fs data section grow trans */
35 uint tr_swrite
; /* sync write inode trans */
36 uint tr_addafork
; /* cvt inode to attributed trans */
37 uint tr_writeid
; /* write setuid/setgid file */
38 uint tr_attrinval
; /* attr fork buffer invalidation */
39 uint tr_attrset
; /* set/create an attribute */
40 uint tr_attrrm
; /* remove an attribute */
41 uint tr_clearagi
; /* clear bad agi unlinked ino bucket */
42 uint tr_growrtalloc
; /* grow realtime allocations */
43 uint tr_growrtzero
; /* grow realtime zeroing */
44 uint tr_growrtfree
; /* grow realtime freeing */
45 } xfs_trans_reservations_t
;
49 #define XFS_DADDR_TO_AGNO(mp,d) \
50 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
51 #define XFS_DADDR_TO_AGBNO(mp,d) \
52 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
54 #else /* __KERNEL__ */
58 struct xfs_mount_args
;
68 * Prototypes and functions for the Data Migration subsystem.
71 typedef int (*xfs_send_data_t
)(int, struct xfs_inode
*,
72 xfs_off_t
, size_t, int, int *);
73 typedef int (*xfs_send_mmap_t
)(struct vm_area_struct
*, uint
);
74 typedef int (*xfs_send_destroy_t
)(struct xfs_inode
*, dm_right_t
);
75 typedef int (*xfs_send_namesp_t
)(dm_eventtype_t
, struct xfs_mount
*,
76 struct xfs_inode
*, dm_right_t
,
77 struct xfs_inode
*, dm_right_t
,
78 const char *, const char *, mode_t
, int, int);
79 typedef int (*xfs_send_mount_t
)(struct xfs_mount
*, dm_right_t
,
81 typedef void (*xfs_send_unmount_t
)(struct xfs_mount
*, struct xfs_inode
*,
82 dm_right_t
, mode_t
, int, int);
84 typedef struct xfs_dmops
{
85 xfs_send_data_t xfs_send_data
;
86 xfs_send_mmap_t xfs_send_mmap
;
87 xfs_send_destroy_t xfs_send_destroy
;
88 xfs_send_namesp_t xfs_send_namesp
;
89 xfs_send_mount_t xfs_send_mount
;
90 xfs_send_unmount_t xfs_send_unmount
;
93 #define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
94 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
95 #define XFS_SEND_MMAP(mp, vma,fl) \
96 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
97 #define XFS_SEND_DESTROY(mp, ip,right) \
98 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
99 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
100 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
101 #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
102 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl)
103 #define XFS_SEND_MOUNT(mp,right,path,name) \
104 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
105 #define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
106 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
110 * Prototypes and functions for the Quota Management subsystem.
115 struct xfs_quotainfo
;
117 typedef int (*xfs_qminit_t
)(struct xfs_mount
*, uint
*, uint
*);
118 typedef int (*xfs_qmmount_t
)(struct xfs_mount
*, uint
, uint
);
119 typedef int (*xfs_qmunmount_t
)(struct xfs_mount
*);
120 typedef void (*xfs_qmdone_t
)(struct xfs_mount
*);
121 typedef void (*xfs_dqrele_t
)(struct xfs_dquot
*);
122 typedef int (*xfs_dqattach_t
)(struct xfs_inode
*, uint
);
123 typedef void (*xfs_dqdetach_t
)(struct xfs_inode
*);
124 typedef int (*xfs_dqpurgeall_t
)(struct xfs_mount
*, uint
);
125 typedef int (*xfs_dqvopalloc_t
)(struct xfs_mount
*,
126 struct xfs_inode
*, uid_t
, gid_t
, prid_t
, uint
,
127 struct xfs_dquot
**, struct xfs_dquot
**);
128 typedef void (*xfs_dqvopcreate_t
)(struct xfs_trans
*, struct xfs_inode
*,
129 struct xfs_dquot
*, struct xfs_dquot
*);
130 typedef int (*xfs_dqvoprename_t
)(struct xfs_inode
**);
131 typedef struct xfs_dquot
* (*xfs_dqvopchown_t
)(
132 struct xfs_trans
*, struct xfs_inode
*,
133 struct xfs_dquot
**, struct xfs_dquot
*);
134 typedef int (*xfs_dqvopchownresv_t
)(struct xfs_trans
*, struct xfs_inode
*,
135 struct xfs_dquot
*, struct xfs_dquot
*, uint
);
136 typedef void (*xfs_dqstatvfs_t
)(struct xfs_inode
*, bhv_statvfs_t
*);
137 typedef int (*xfs_dqsync_t
)(struct xfs_mount
*, int flags
);
138 typedef int (*xfs_quotactl_t
)(struct xfs_mount
*, int, int, xfs_caddr_t
);
140 typedef struct xfs_qmops
{
141 xfs_qminit_t xfs_qminit
;
142 xfs_qmdone_t xfs_qmdone
;
143 xfs_qmmount_t xfs_qmmount
;
144 xfs_qmunmount_t xfs_qmunmount
;
145 xfs_dqrele_t xfs_dqrele
;
146 xfs_dqattach_t xfs_dqattach
;
147 xfs_dqdetach_t xfs_dqdetach
;
148 xfs_dqpurgeall_t xfs_dqpurgeall
;
149 xfs_dqvopalloc_t xfs_dqvopalloc
;
150 xfs_dqvopcreate_t xfs_dqvopcreate
;
151 xfs_dqvoprename_t xfs_dqvoprename
;
152 xfs_dqvopchown_t xfs_dqvopchown
;
153 xfs_dqvopchownresv_t xfs_dqvopchownresv
;
154 xfs_dqstatvfs_t xfs_dqstatvfs
;
155 xfs_dqsync_t xfs_dqsync
;
156 xfs_quotactl_t xfs_quotactl
;
157 struct xfs_dqtrxops
*xfs_dqtrxops
;
160 #define XFS_QM_INIT(mp, mnt, fl) \
161 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
162 #define XFS_QM_MOUNT(mp, mnt, fl) \
163 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl)
164 #define XFS_QM_UNMOUNT(mp) \
165 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
166 #define XFS_QM_DONE(mp) \
167 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
168 #define XFS_QM_DQRELE(mp, dq) \
169 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
170 #define XFS_QM_DQATTACH(mp, ip, fl) \
171 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
172 #define XFS_QM_DQDETACH(mp, ip) \
173 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
174 #define XFS_QM_DQPURGEALL(mp, fl) \
175 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
176 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
177 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
178 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
179 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
180 #define XFS_QM_DQVOPRENAME(mp, ip) \
181 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
182 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
183 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
184 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
185 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
186 #define XFS_QM_DQSTATVFS(ip, statp) \
187 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
188 #define XFS_QM_DQSYNC(mp, flags) \
189 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
190 #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
191 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
193 #ifdef HAVE_PERCPU_SB
196 * Valid per-cpu incore superblock counters. Note that if you add new counters,
197 * you may need to define new counter disabled bit field descriptors as there
198 * are more possible fields in the superblock that can fit in a bitfield on a
199 * 32 bit platform. The XFS_SBS_* values for the current current counters just
202 typedef struct xfs_icsb_cnts
{
203 uint64_t icsb_fdblocks
;
205 uint64_t icsb_icount
;
206 unsigned long icsb_flags
;
209 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
211 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
213 extern int xfs_icsb_init_counters(struct xfs_mount
*);
214 extern void xfs_icsb_reinit_counters(struct xfs_mount
*);
215 extern void xfs_icsb_destroy_counters(struct xfs_mount
*);
216 extern void xfs_icsb_sync_counters(struct xfs_mount
*, int);
217 extern void xfs_icsb_sync_counters_locked(struct xfs_mount
*, int);
220 #define xfs_icsb_init_counters(mp) (0)
221 #define xfs_icsb_destroy_counters(mp) do { } while (0)
222 #define xfs_icsb_reinit_counters(mp) do { } while (0)
223 #define xfs_icsb_sync_counters(mp, flags) do { } while (0)
224 #define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
227 typedef struct xfs_ail
{
228 struct list_head xa_ail
;
230 struct task_struct
*xa_task
;
234 typedef struct xfs_mount
{
235 struct super_block
*m_super
;
236 xfs_tid_t m_tid
; /* next unused tid for fs */
237 spinlock_t m_ail_lock
; /* fs AIL mutex */
238 xfs_ail_t m_ail
; /* fs active log item list */
239 xfs_sb_t m_sb
; /* copy of fs superblock */
240 spinlock_t m_sb_lock
; /* sb counter lock */
241 struct xfs_buf
*m_sb_bp
; /* buffer for superblock */
242 char *m_fsname
; /* filesystem name */
243 int m_fsname_len
; /* strlen of fs name */
244 char *m_rtname
; /* realtime device name */
245 char *m_logname
; /* external log device name */
246 int m_bsize
; /* fs logical block size */
247 xfs_agnumber_t m_agfrotor
; /* last ag where space found */
248 xfs_agnumber_t m_agirotor
; /* last ag dir inode alloced */
249 spinlock_t m_agirotor_lock
;/* .. and lock protecting it */
250 xfs_agnumber_t m_maxagi
; /* highest inode alloc group */
251 uint m_ireclaims
; /* count of calls to reclaim*/
252 uint m_readio_log
; /* min read size log bytes */
253 uint m_readio_blocks
; /* min read size blocks */
254 uint m_writeio_log
; /* min write size log bytes */
255 uint m_writeio_blocks
; /* min write size blocks */
256 struct log
*m_log
; /* log specific stuff */
257 int m_logbufs
; /* number of log buffers */
258 int m_logbsize
; /* size of each log buffer */
259 uint m_rsumlevels
; /* rt summary levels */
260 uint m_rsumsize
; /* size of rt summary, bytes */
261 struct xfs_inode
*m_rbmip
; /* pointer to bitmap inode */
262 struct xfs_inode
*m_rsumip
; /* pointer to summary inode */
263 struct xfs_inode
*m_rootip
; /* pointer to root directory */
264 struct xfs_quotainfo
*m_quotainfo
; /* disk quota information */
265 xfs_buftarg_t
*m_ddev_targp
; /* saves taking the address */
266 xfs_buftarg_t
*m_logdev_targp
;/* ptr to log device */
267 xfs_buftarg_t
*m_rtdev_targp
; /* ptr to rt device */
268 __uint8_t m_blkbit_log
; /* blocklog + NBBY */
269 __uint8_t m_blkbb_log
; /* blocklog - BBSHIFT */
270 __uint8_t m_agno_log
; /* log #ag's */
271 __uint8_t m_agino_log
; /* #bits for agino in inum */
272 __uint16_t m_inode_cluster_size
;/* min inode buf size */
273 uint m_blockmask
; /* sb_blocksize-1 */
274 uint m_blockwsize
; /* sb_blocksize in words */
275 uint m_blockwmask
; /* blockwsize-1 */
276 uint m_alloc_mxr
[2]; /* max alloc btree records */
277 uint m_alloc_mnr
[2]; /* min alloc btree records */
278 uint m_bmap_dmxr
[2]; /* max bmap btree records */
279 uint m_bmap_dmnr
[2]; /* min bmap btree records */
280 uint m_inobt_mxr
[2]; /* max inobt btree records */
281 uint m_inobt_mnr
[2]; /* min inobt btree records */
282 uint m_ag_maxlevels
; /* XFS_AG_MAXLEVELS */
283 uint m_bm_maxlevels
[2]; /* XFS_BM_MAXLEVELS */
284 uint m_in_maxlevels
; /* XFS_IN_MAXLEVELS */
285 struct xfs_perag
*m_perag
; /* per-ag accounting info */
286 struct rw_semaphore m_peraglock
; /* lock for m_perag (pointer) */
287 struct mutex m_growlock
; /* growfs mutex */
288 int m_fixedfsid
[2]; /* unchanged for life of FS */
289 uint m_dmevmask
; /* DMI events for this FS */
290 __uint64_t m_flags
; /* global mount flags */
291 uint m_attroffset
; /* inode attribute offset */
292 uint m_dir_node_ents
; /* #entries in a dir danode */
293 uint m_attr_node_ents
; /* #entries in attr danode */
294 int m_ialloc_inos
; /* inodes in inode allocation */
295 int m_ialloc_blks
; /* blocks in inode allocation */
296 int m_litino
; /* size of inode union area */
297 int m_inoalign_mask
;/* mask sb_inoalignmt if used */
298 uint m_qflags
; /* quota status flags */
299 xfs_trans_reservations_t m_reservations
;/* precomputed res values */
300 __uint64_t m_maxicount
; /* maximum inode count */
301 __uint64_t m_maxioffset
; /* maximum inode offset */
302 __uint64_t m_resblks
; /* total reserved blocks */
303 __uint64_t m_resblks_avail
;/* available reserved blocks */
305 xfs_ino_t m_inoadd
; /* add value for ino64_offset */
307 int m_dalign
; /* stripe unit */
308 int m_swidth
; /* stripe width */
309 int m_sinoalign
; /* stripe unit inode alignment */
310 int m_attr_magicpct
;/* 37% of the blocksize */
311 int m_dir_magicpct
; /* 37% of the dir blocksize */
312 __uint8_t m_mk_sharedro
; /* mark shared ro on unmount */
313 __uint8_t m_inode_quiesce
;/* call quiesce on new inodes. */
314 __uint8_t m_sectbb_log
; /* sectlog - BBSHIFT */
315 const struct xfs_nameops
*m_dirnameops
; /* vector of dir name ops */
316 int m_dirblksize
; /* directory block sz--bytes */
317 int m_dirblkfsbs
; /* directory block sz--fsbs */
318 xfs_dablk_t m_dirdatablk
; /* blockno of dir data v2 */
319 xfs_dablk_t m_dirleafblk
; /* blockno of dir non-data v2 */
320 xfs_dablk_t m_dirfreeblk
; /* blockno of dirfreeindex v2 */
321 uint m_chsize
; /* size of next field */
322 struct xfs_chash
*m_chash
; /* fs private inode per-cluster
324 struct xfs_dmops
*m_dm_ops
; /* vector of DMI ops */
325 struct xfs_qmops
*m_qm_ops
; /* vector of XQM ops */
326 atomic_t m_active_trans
; /* number trans frozen */
327 #ifdef HAVE_PERCPU_SB
328 xfs_icsb_cnts_t
*m_sb_cnts
; /* per-cpu superblock counters */
329 unsigned long m_icsb_counters
; /* disabled per-cpu counters */
330 struct notifier_block m_icsb_notifier
; /* hotplug cpu notifier */
331 struct mutex m_icsb_mutex
; /* balancer sync lock */
333 struct xfs_mru_cache
*m_filestream
; /* per-mount filestream data */
334 struct task_struct
*m_sync_task
; /* generalised sync thread */
335 bhv_vfs_sync_work_t m_sync_work
; /* work item for VFS_SYNC */
336 struct list_head m_sync_list
; /* sync thread work item list */
337 spinlock_t m_sync_lock
; /* work item list lock */
338 int m_sync_seq
; /* sync thread generation no. */
339 wait_queue_head_t m_wait_single_sync_task
;
345 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
346 must be synchronous except
347 for space allocations */
348 #define XFS_MOUNT_INO64 (1ULL << 1)
349 #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
350 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
351 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
352 operations, typically for
353 disk errors in metadata */
354 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
356 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
358 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
359 #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
360 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
361 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
362 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
363 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
364 /* osyncisdsync is now default*/
365 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
367 #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
368 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
369 #define XFS_MOUNT_BARRIER (1ULL << 17)
370 #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
371 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
373 #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
374 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
375 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
376 * I/O size in stat() */
377 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
379 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
381 #define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
385 * Default minimum read and write sizes.
387 #define XFS_READIO_LOG_LARGE 16
388 #define XFS_WRITEIO_LOG_LARGE 16
391 * Max and min values for mount-option defined I/O
392 * preallocation sizes.
394 #define XFS_MAX_IO_LOG 30 /* 1G */
395 #define XFS_MIN_IO_LOG PAGE_SHIFT
398 * Synchronous read and write sizes. This should be
399 * better for NFSv2 wsync filesystems.
401 #define XFS_WSYNC_READIO_LOG 15 /* 32K */
402 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
405 * Allow large block sizes to be reported to userspace programs if the
406 * "largeio" mount option is used.
408 * If compatibility mode is specified, simply return the basic unit of caching
409 * so that we don't get inefficient read/modify/write I/O from user apps.
412 * If the underlying volume is a stripe, then return the stripe width in bytes
413 * as the recommended I/O size. It is not a stripe and we've set a default
414 * buffered I/O size, return that, otherwise return the compat default.
416 static inline unsigned long
417 xfs_preferred_iosize(xfs_mount_t
*mp
)
419 if (mp
->m_flags
& XFS_MOUNT_COMPAT_IOSIZE
)
420 return PAGE_CACHE_SIZE
;
421 return (mp
->m_swidth
?
422 (mp
->m_swidth
<< mp
->m_sb
.sb_blocklog
) :
423 ((mp
->m_flags
& XFS_MOUNT_DFLT_IOSIZE
) ?
424 (1 << (int)MAX(mp
->m_readio_log
, mp
->m_writeio_log
)) :
428 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
430 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
431 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
432 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
433 void xfs_do_force_shutdown(struct xfs_mount
*mp
, int flags
, char *fname
,
435 #define xfs_force_shutdown(m,f) \
436 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
439 * Flags for xfs_mountfs
441 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
443 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
444 static inline xfs_agnumber_t
445 xfs_daddr_to_agno(struct xfs_mount
*mp
, xfs_daddr_t d
)
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
;
452 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
453 static inline xfs_agblock_t
454 xfs_daddr_to_agbno(struct xfs_mount
*mp
, xfs_daddr_t d
)
456 xfs_daddr_t ld
= XFS_BB_TO_FSBT(mp
, d
);
457 return (xfs_agblock_t
) do_div(ld
, mp
->m_sb
.sb_agblocks
);
461 * perag get/put wrappers for eventual ref counting
463 static inline xfs_perag_t
*
464 xfs_get_perag(struct xfs_mount
*mp
, xfs_ino_t ino
)
466 return &mp
->m_perag
[XFS_INO_TO_AGNO(mp
, ino
)];
470 xfs_put_perag(struct xfs_mount
*mp
, xfs_perag_t
*pag
)
472 /* nothing to see here, move along */
476 * Per-cpu superblock locking functions
478 #ifdef HAVE_PERCPU_SB
480 xfs_icsb_lock(xfs_mount_t
*mp
)
482 mutex_lock(&mp
->m_icsb_mutex
);
486 xfs_icsb_unlock(xfs_mount_t
*mp
)
488 mutex_unlock(&mp
->m_icsb_mutex
);
491 #define xfs_icsb_lock(mp)
492 #define xfs_icsb_unlock(mp)
496 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
497 * xfs_growfs can specify a few fields which are more than int limit
499 typedef struct xfs_mod_sb
{
500 xfs_sb_field_t msb_field
; /* Field to modify, see below */
501 int64_t msb_delta
; /* Change to make to specified field */
504 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
505 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
507 extern int xfs_log_sbcount(xfs_mount_t
*, uint
);
508 extern int xfs_mountfs(xfs_mount_t
*mp
);
509 extern void xfs_mountfs_check_barriers(xfs_mount_t
*mp
);
511 extern void xfs_unmountfs(xfs_mount_t
*);
512 extern int xfs_unmountfs_writesb(xfs_mount_t
*);
513 extern int xfs_unmount_flush(xfs_mount_t
*, int);
514 extern int xfs_mod_incore_sb(xfs_mount_t
*, xfs_sb_field_t
, int64_t, int);
515 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t
*, xfs_sb_field_t
,
517 extern int xfs_mod_incore_sb_batch(xfs_mount_t
*, xfs_mod_sb_t
*,
519 extern struct xfs_buf
*xfs_getsb(xfs_mount_t
*, int);
520 extern int xfs_readsb(xfs_mount_t
*, int);
521 extern void xfs_freesb(xfs_mount_t
*);
522 extern int xfs_fs_writable(xfs_mount_t
*);
523 extern int xfs_sb_validate_fsb_count(struct xfs_sb
*, __uint64_t
);
525 extern int xfs_dmops_get(struct xfs_mount
*, struct xfs_mount_args
*);
526 extern void xfs_dmops_put(struct xfs_mount
*);
527 extern int xfs_qmops_get(struct xfs_mount
*, struct xfs_mount_args
*);
528 extern void xfs_qmops_put(struct xfs_mount
*);
530 extern struct xfs_dmops xfs_dmcore_xfs
;
532 #endif /* __KERNEL__ */
534 extern void xfs_mod_sb(struct xfs_trans
*, __int64_t
);
535 extern xfs_agnumber_t
xfs_initialize_perag(struct xfs_mount
*, xfs_agnumber_t
);
536 extern void xfs_sb_from_disk(struct xfs_sb
*, struct xfs_dsb
*);
537 extern void xfs_sb_to_disk(struct xfs_dsb
*, struct xfs_sb
*, __int64_t
);
539 #endif /* __XFS_MOUNT_H__ */