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__
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
;
47 * Moved here from xfs_ag.h to avoid reordering header files
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))
58 struct xfs_mount_args
;
67 extern struct vfsops xfs_vfsops
;
68 extern struct vnodeops xfs_vnodeops
;
70 #define AIL_LOCK_T lock_t
71 #define AIL_LOCKINIT(x,y) spinlock_init(x,y)
72 #define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
73 #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock)
74 #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s)
78 * Prototypes and functions for the Data Migration subsystem.
81 typedef int (*xfs_send_data_t
)(int, struct vnode
*,
82 xfs_off_t
, size_t, int, vrwlock_t
*);
83 typedef int (*xfs_send_mmap_t
)(struct vm_area_struct
*, uint
);
84 typedef int (*xfs_send_destroy_t
)(struct vnode
*, dm_right_t
);
85 typedef int (*xfs_send_namesp_t
)(dm_eventtype_t
, struct vfs
*,
87 dm_right_t
, struct vnode
*, dm_right_t
,
88 char *, char *, mode_t
, int, int);
89 typedef void (*xfs_send_unmount_t
)(struct vfs
*, struct vnode
*,
90 dm_right_t
, mode_t
, int, int);
92 typedef struct xfs_dmops
{
93 xfs_send_data_t xfs_send_data
;
94 xfs_send_mmap_t xfs_send_mmap
;
95 xfs_send_destroy_t xfs_send_destroy
;
96 xfs_send_namesp_t xfs_send_namesp
;
97 xfs_send_unmount_t xfs_send_unmount
;
100 #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
101 (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock)
102 #define XFS_SEND_MMAP(mp, vma,fl) \
103 (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl)
104 #define XFS_SEND_DESTROY(mp, vp,right) \
105 (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right)
106 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
107 (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
108 #define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
109 (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl)
110 #define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \
111 (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl)
115 * Prototypes and functions for the Quota Management subsystem.
120 struct xfs_quotainfo
;
122 typedef int (*xfs_qminit_t
)(struct xfs_mount
*, uint
*, uint
*);
123 typedef int (*xfs_qmmount_t
)(struct xfs_mount
*, uint
, uint
, int);
124 typedef int (*xfs_qmunmount_t
)(struct xfs_mount
*);
125 typedef void (*xfs_qmdone_t
)(struct xfs_mount
*);
126 typedef void (*xfs_dqrele_t
)(struct xfs_dquot
*);
127 typedef int (*xfs_dqattach_t
)(struct xfs_inode
*, uint
);
128 typedef void (*xfs_dqdetach_t
)(struct xfs_inode
*);
129 typedef int (*xfs_dqpurgeall_t
)(struct xfs_mount
*, uint
);
130 typedef int (*xfs_dqvopalloc_t
)(struct xfs_mount
*,
131 struct xfs_inode
*, uid_t
, gid_t
, prid_t
, uint
,
132 struct xfs_dquot
**, struct xfs_dquot
**);
133 typedef void (*xfs_dqvopcreate_t
)(struct xfs_trans
*, struct xfs_inode
*,
134 struct xfs_dquot
*, struct xfs_dquot
*);
135 typedef int (*xfs_dqvoprename_t
)(struct xfs_inode
**);
136 typedef struct xfs_dquot
* (*xfs_dqvopchown_t
)(
137 struct xfs_trans
*, struct xfs_inode
*,
138 struct xfs_dquot
**, struct xfs_dquot
*);
139 typedef int (*xfs_dqvopchownresv_t
)(struct xfs_trans
*, struct xfs_inode
*,
140 struct xfs_dquot
*, struct xfs_dquot
*, uint
);
142 typedef struct xfs_qmops
{
143 xfs_qminit_t xfs_qminit
;
144 xfs_qmdone_t xfs_qmdone
;
145 xfs_qmmount_t xfs_qmmount
;
146 xfs_qmunmount_t xfs_qmunmount
;
147 xfs_dqrele_t xfs_dqrele
;
148 xfs_dqattach_t xfs_dqattach
;
149 xfs_dqdetach_t xfs_dqdetach
;
150 xfs_dqpurgeall_t xfs_dqpurgeall
;
151 xfs_dqvopalloc_t xfs_dqvopalloc
;
152 xfs_dqvopcreate_t xfs_dqvopcreate
;
153 xfs_dqvoprename_t xfs_dqvoprename
;
154 xfs_dqvopchown_t xfs_dqvopchown
;
155 xfs_dqvopchownresv_t xfs_dqvopchownresv
;
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, mfsi_flags) \
162 (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags)
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)
188 * Prototypes and functions for I/O core modularization.
191 typedef int (*xfs_ioinit_t
)(struct vfs
*,
192 struct xfs_mount_args
*, int);
193 typedef int (*xfs_bmapi_t
)(struct xfs_trans
*, void *,
194 xfs_fileoff_t
, xfs_filblks_t
, int,
195 xfs_fsblock_t
*, xfs_extlen_t
,
196 struct xfs_bmbt_irec
*, int *,
197 struct xfs_bmap_free
*);
198 typedef int (*xfs_bmap_eof_t
)(void *, xfs_fileoff_t
, int, int *);
199 typedef int (*xfs_iomap_write_direct_t
)(
200 void *, xfs_off_t
, size_t, int,
201 struct xfs_bmbt_irec
*, int *, int);
202 typedef int (*xfs_iomap_write_delay_t
)(
203 void *, xfs_off_t
, size_t, int,
204 struct xfs_bmbt_irec
*, int *);
205 typedef int (*xfs_iomap_write_allocate_t
)(
206 void *, xfs_off_t
, size_t,
207 struct xfs_bmbt_irec
*, int *);
208 typedef int (*xfs_iomap_write_unwritten_t
)(
209 void *, xfs_off_t
, size_t);
210 typedef uint (*xfs_lck_map_shared_t
)(void *);
211 typedef void (*xfs_lock_t
)(void *, uint
);
212 typedef void (*xfs_lock_demote_t
)(void *, uint
);
213 typedef int (*xfs_lock_nowait_t
)(void *, uint
);
214 typedef void (*xfs_unlk_t
)(void *, unsigned int);
215 typedef xfs_fsize_t (*xfs_size_t
)(void *);
216 typedef xfs_fsize_t (*xfs_iodone_t
)(struct vfs
*);
218 typedef struct xfs_ioops
{
219 xfs_ioinit_t xfs_ioinit
;
220 xfs_bmapi_t xfs_bmapi_func
;
221 xfs_bmap_eof_t xfs_bmap_eof_func
;
222 xfs_iomap_write_direct_t xfs_iomap_write_direct
;
223 xfs_iomap_write_delay_t xfs_iomap_write_delay
;
224 xfs_iomap_write_allocate_t xfs_iomap_write_allocate
;
225 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten
;
226 xfs_lock_t xfs_ilock
;
227 xfs_lck_map_shared_t xfs_lck_map_shared
;
228 xfs_lock_demote_t xfs_ilock_demote
;
229 xfs_lock_nowait_t xfs_ilock_nowait
;
230 xfs_unlk_t xfs_unlock
;
231 xfs_size_t xfs_size_func
;
232 xfs_iodone_t xfs_iodone
;
235 #define XFS_IOINIT(vfsp, args, flags) \
236 (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
237 #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist) \
238 (*(mp)->m_io_ops.xfs_bmapi_func) \
239 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist)
240 #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
241 (*(mp)->m_io_ops.xfs_bmap_eof_func) \
242 ((io)->io_obj, endoff, whichfork, eof)
243 #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
244 (*(mp)->m_io_ops.xfs_iomap_write_direct) \
245 ((io)->io_obj, offset, count, flags, mval, nmap, found)
246 #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
247 (*(mp)->m_io_ops.xfs_iomap_write_delay) \
248 ((io)->io_obj, offset, count, flags, mval, nmap)
249 #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
250 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
251 ((io)->io_obj, offset, count, mval, nmap)
252 #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
253 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
254 ((io)->io_obj, offset, count)
255 #define XFS_LCK_MAP_SHARED(mp, io) \
256 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
257 #define XFS_ILOCK(mp, io, mode) \
258 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
259 #define XFS_ILOCK_NOWAIT(mp, io, mode) \
260 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
261 #define XFS_IUNLOCK(mp, io, mode) \
262 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
263 #define XFS_ILOCK_DEMOTE(mp, io, mode) \
264 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
265 #define XFS_SIZE(mp, io) \
266 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
267 #define XFS_IODONE(vfsp) \
268 (*(mp)->m_io_ops.xfs_iodone)(vfsp)
270 #ifdef HAVE_PERCPU_SB
273 * Valid per-cpu incore superblock counters. Note that if you add new counters,
274 * you may need to define new counter disabled bit field descriptors as there
275 * are more possible fields in the superblock that can fit in a bitfield on a
276 * 32 bit platform. The XFS_SBS_* values for the current current counters just
279 typedef struct xfs_icsb_cnts
{
280 uint64_t icsb_fdblocks
;
282 uint64_t icsb_icount
;
283 unsigned long icsb_flags
;
286 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
288 #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */
289 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
291 extern int xfs_icsb_init_counters(struct xfs_mount
*);
292 extern void xfs_icsb_sync_counters_lazy(struct xfs_mount
*);
295 #define xfs_icsb_init_counters(mp) (0)
296 #define xfs_icsb_sync_counters_lazy(mp) do { } while (0)
299 typedef struct xfs_mount
{
300 bhv_desc_t m_bhv
; /* vfs xfs behavior */
301 xfs_tid_t m_tid
; /* next unused tid for fs */
302 AIL_LOCK_T m_ail_lock
; /* fs AIL mutex */
303 xfs_ail_entry_t m_ail
; /* fs active log item list */
304 uint m_ail_gen
; /* fs AIL generation count */
305 xfs_sb_t m_sb
; /* copy of fs superblock */
306 lock_t m_sb_lock
; /* sb counter mutex */
307 struct xfs_buf
*m_sb_bp
; /* buffer for superblock */
308 char *m_fsname
; /* filesystem name */
309 int m_fsname_len
; /* strlen of fs name */
310 char *m_rtname
; /* realtime device name */
311 char *m_logname
; /* external log device name */
312 int m_bsize
; /* fs logical block size */
313 xfs_agnumber_t m_agfrotor
; /* last ag where space found */
314 xfs_agnumber_t m_agirotor
; /* last ag dir inode alloced */
315 lock_t m_agirotor_lock
;/* .. and lock protecting it */
316 xfs_agnumber_t m_maxagi
; /* highest inode alloc group */
317 uint m_ihsize
; /* size of next field */
318 struct xfs_ihash
*m_ihash
; /* fs private inode hash table*/
319 struct xfs_inode
*m_inodes
; /* active inode list */
320 struct list_head m_del_inodes
; /* inodes to reclaim */
321 mutex_t m_ilock
; /* inode list mutex */
322 uint m_ireclaims
; /* count of calls to reclaim*/
323 uint m_readio_log
; /* min read size log bytes */
324 uint m_readio_blocks
; /* min read size blocks */
325 uint m_writeio_log
; /* min write size log bytes */
326 uint m_writeio_blocks
; /* min write size blocks */
327 struct log
*m_log
; /* log specific stuff */
328 int m_logbufs
; /* number of log buffers */
329 int m_logbsize
; /* size of each log buffer */
330 uint m_rsumlevels
; /* rt summary levels */
331 uint m_rsumsize
; /* size of rt summary, bytes */
332 struct xfs_inode
*m_rbmip
; /* pointer to bitmap inode */
333 struct xfs_inode
*m_rsumip
; /* pointer to summary inode */
334 struct xfs_inode
*m_rootip
; /* pointer to root directory */
335 struct xfs_quotainfo
*m_quotainfo
; /* disk quota information */
336 xfs_buftarg_t
*m_ddev_targp
; /* saves taking the address */
337 xfs_buftarg_t
*m_logdev_targp
;/* ptr to log device */
338 xfs_buftarg_t
*m_rtdev_targp
; /* ptr to rt device */
339 __uint8_t m_dircook_elog
; /* log d-cookie entry bits */
340 __uint8_t m_blkbit_log
; /* blocklog + NBBY */
341 __uint8_t m_blkbb_log
; /* blocklog - BBSHIFT */
342 __uint8_t m_agno_log
; /* log #ag's */
343 __uint8_t m_agino_log
; /* #bits for agino in inum */
344 __uint8_t m_nreadaheads
; /* #readahead buffers */
345 __uint16_t m_inode_cluster_size
;/* min inode buf size */
346 uint m_blockmask
; /* sb_blocksize-1 */
347 uint m_blockwsize
; /* sb_blocksize in words */
348 uint m_blockwmask
; /* blockwsize-1 */
349 uint m_alloc_mxr
[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
350 uint m_alloc_mnr
[2]; /* XFS_ALLOC_BLOCK_MINRECS */
351 uint m_bmap_dmxr
[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
352 uint m_bmap_dmnr
[2]; /* XFS_BMAP_BLOCK_DMINRECS */
353 uint m_inobt_mxr
[2]; /* XFS_INOBT_BLOCK_MAXRECS */
354 uint m_inobt_mnr
[2]; /* XFS_INOBT_BLOCK_MINRECS */
355 uint m_ag_maxlevels
; /* XFS_AG_MAXLEVELS */
356 uint m_bm_maxlevels
[2]; /* XFS_BM_MAXLEVELS */
357 uint m_in_maxlevels
; /* XFS_IN_MAXLEVELS */
358 struct xfs_perag
*m_perag
; /* per-ag accounting info */
359 struct rw_semaphore m_peraglock
; /* lock for m_perag (pointer) */
360 sema_t m_growlock
; /* growfs mutex */
361 int m_fixedfsid
[2]; /* unchanged for life of FS */
362 uint m_dmevmask
; /* DMI events for this FS */
363 __uint64_t m_flags
; /* global mount flags */
364 uint m_attroffset
; /* inode attribute offset */
365 uint m_dir_node_ents
; /* #entries in a dir danode */
366 uint m_attr_node_ents
; /* #entries in attr danode */
367 int m_ialloc_inos
; /* inodes in inode allocation */
368 int m_ialloc_blks
; /* blocks in inode allocation */
369 int m_litino
; /* size of inode union area */
370 int m_inoalign_mask
;/* mask sb_inoalignmt if used */
371 uint m_qflags
; /* quota status flags */
372 xfs_trans_reservations_t m_reservations
;/* precomputed res values */
373 __uint64_t m_maxicount
; /* maximum inode count */
374 __uint64_t m_maxioffset
; /* maximum inode offset */
375 __uint64_t m_resblks
; /* total reserved blocks */
376 __uint64_t m_resblks_avail
;/* available reserved blocks */
378 xfs_ino_t m_inoadd
; /* add value for ino64_offset */
380 int m_dalign
; /* stripe unit */
381 int m_swidth
; /* stripe width */
382 int m_sinoalign
; /* stripe unit inode alignment */
383 int m_attr_magicpct
;/* 37% of the blocksize */
384 int m_dir_magicpct
; /* 37% of the dir blocksize */
385 __uint8_t m_mk_sharedro
; /* mark shared ro on unmount */
386 __uint8_t m_inode_quiesce
;/* call quiesce on new inodes.
387 field governed by m_ilock */
388 __uint8_t m_sectbb_log
; /* sectlog - BBSHIFT */
389 __uint8_t m_dirversion
; /* 1 or 2 */
390 xfs_dirops_t m_dirops
; /* table of dir funcs */
391 int m_dirblksize
; /* directory block sz--bytes */
392 int m_dirblkfsbs
; /* directory block sz--fsbs */
393 xfs_dablk_t m_dirdatablk
; /* blockno of dir data v2 */
394 xfs_dablk_t m_dirleafblk
; /* blockno of dir non-data v2 */
395 xfs_dablk_t m_dirfreeblk
; /* blockno of dirfreeindex v2 */
396 uint m_chsize
; /* size of next field */
397 struct xfs_chash
*m_chash
; /* fs private inode per-cluster
399 struct xfs_dmops m_dm_ops
; /* vector of DMI ops */
400 struct xfs_qmops m_qm_ops
; /* vector of XQM ops */
401 struct xfs_ioops m_io_ops
; /* vector of I/O ops */
402 atomic_t m_active_trans
; /* number trans frozen */
403 #ifdef HAVE_PERCPU_SB
404 xfs_icsb_cnts_t
*m_sb_cnts
; /* per-cpu superblock counters */
405 unsigned long m_icsb_counters
; /* disabled per-cpu counters */
406 struct notifier_block m_icsb_notifier
; /* hotplug cpu notifier */
413 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
414 must be synchronous except
415 for space allocations */
416 #define XFS_MOUNT_INO64 (1ULL << 1)
417 /* (1ULL << 2) -- currently unused */
418 /* (1ULL << 3) -- currently unused */
419 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
420 operations, typically for
421 disk errors in metadata */
422 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
424 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
426 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
427 /* (1ULL << 9) -- currently unused */
428 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
429 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
430 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
431 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
432 /* osyncisdsync is now default*/
433 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
435 /* (1ULL << 15) -- currently unused */
436 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
437 #define XFS_MOUNT_BARRIER (1ULL << 17)
438 #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/
439 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
441 #define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */
442 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
443 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
444 * I/O size in stat() */
445 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
450 * Default minimum read and write sizes.
452 #define XFS_READIO_LOG_LARGE 16
453 #define XFS_WRITEIO_LOG_LARGE 16
456 * Max and min values for mount-option defined I/O
457 * preallocation sizes.
459 #define XFS_MAX_IO_LOG 30 /* 1G */
460 #define XFS_MIN_IO_LOG PAGE_SHIFT
463 * Synchronous read and write sizes. This should be
464 * better for NFSv2 wsync filesystems.
466 #define XFS_WSYNC_READIO_LOG 15 /* 32K */
467 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
470 * Allow large block sizes to be reported to userspace programs if the
471 * "largeio" mount option is used.
473 * If compatibility mode is specified, simply return the basic unit of caching
474 * so that we don't get inefficient read/modify/write I/O from user apps.
477 * If the underlying volume is a stripe, then return the stripe width in bytes
478 * as the recommended I/O size. It is not a stripe and we've set a default
479 * buffered I/O size, return that, otherwise return the compat default.
481 static inline unsigned long
482 xfs_preferred_iosize(xfs_mount_t
*mp
)
484 if (mp
->m_flags
& XFS_MOUNT_COMPAT_IOSIZE
)
485 return PAGE_CACHE_SIZE
;
486 return (mp
->m_swidth
?
487 (mp
->m_swidth
<< mp
->m_sb
.sb_blocklog
) :
488 ((mp
->m_flags
& XFS_MOUNT_DFLT_IOSIZE
) ?
489 (1 << (int)MAX(mp
->m_readio_log
, mp
->m_writeio_log
)) :
493 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
495 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
496 #define xfs_force_shutdown(m,f) \
497 VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__)
500 * Flags sent to xfs_force_shutdown.
502 #define XFS_METADATA_IO_ERROR 0x1
503 #define XFS_LOG_IO_ERROR 0x2
504 #define XFS_FORCE_UMOUNT 0x4
505 #define XFS_CORRUPT_INCORE 0x8 /* Corrupt in-memory data structures */
506 #define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */
509 * Flags for xfs_mountfs
511 #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
512 #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
513 #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
515 #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
518 * Macros for getting from mount to vfs and back.
520 #define XFS_MTOVFS(mp) xfs_mtovfs(mp)
521 static inline struct vfs
*xfs_mtovfs(xfs_mount_t
*mp
)
523 return bhvtovfs(&mp
->m_bhv
);
526 #define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
527 static inline xfs_mount_t
*xfs_bhvtom(bhv_desc_t
*bdp
)
529 return (xfs_mount_t
*)BHV_PDATA(bdp
);
532 #define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
533 static inline xfs_mount_t
*xfs_vfstom(vfs_t
*vfs
)
535 return XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs
), &xfs_vfsops
));
538 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
539 static inline xfs_agnumber_t
540 xfs_daddr_to_agno(struct xfs_mount
*mp
, xfs_daddr_t d
)
542 xfs_daddr_t ld
= XFS_BB_TO_FSBT(mp
, d
);
543 do_div(ld
, mp
->m_sb
.sb_agblocks
);
544 return (xfs_agnumber_t
) ld
;
547 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
548 static inline xfs_agblock_t
549 xfs_daddr_to_agbno(struct xfs_mount
*mp
, xfs_daddr_t d
)
551 xfs_daddr_t ld
= XFS_BB_TO_FSBT(mp
, d
);
552 return (xfs_agblock_t
) do_div(ld
, mp
->m_sb
.sb_agblocks
);
556 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
558 typedef struct xfs_mod_sb
{
559 xfs_sb_field_t msb_field
; /* Field to modify, see below */
560 int msb_delta
; /* Change to make to specified field */
563 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
564 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
565 #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
566 #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
568 extern xfs_mount_t
*xfs_mount_init(void);
569 extern void xfs_mod_sb(xfs_trans_t
*, __int64_t
);
570 extern void xfs_mount_free(xfs_mount_t
*mp
, int remove_bhv
);
571 extern int xfs_mountfs(struct vfs
*, xfs_mount_t
*mp
, int);
572 extern void xfs_mountfs_check_barriers(xfs_mount_t
*mp
);
574 extern int xfs_unmountfs(xfs_mount_t
*, struct cred
*);
575 extern void xfs_unmountfs_close(xfs_mount_t
*, struct cred
*);
576 extern int xfs_unmountfs_writesb(xfs_mount_t
*);
577 extern int xfs_unmount_flush(xfs_mount_t
*, int);
578 extern int xfs_mod_incore_sb(xfs_mount_t
*, xfs_sb_field_t
, int, int);
579 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t
*, xfs_sb_field_t
,
581 extern int xfs_mod_incore_sb_batch(xfs_mount_t
*, xfs_mod_sb_t
*,
583 extern struct xfs_buf
*xfs_getsb(xfs_mount_t
*, int);
584 extern int xfs_readsb(xfs_mount_t
*mp
);
585 extern void xfs_freesb(xfs_mount_t
*);
586 extern void xfs_do_force_shutdown(bhv_desc_t
*, int, char *, int);
587 extern int xfs_syncsub(xfs_mount_t
*, int, int, int *);
588 extern int xfs_sync_inodes(xfs_mount_t
*, int, int, int *);
589 extern xfs_agnumber_t
xfs_initialize_perag(struct vfs
*, xfs_mount_t
*,
591 extern void xfs_xlatesb(void *, struct xfs_sb
*, int, __int64_t
);
593 extern struct xfs_dmops xfs_dmcore_stub
;
594 extern struct xfs_qmops xfs_qmcore_stub
;
595 extern struct xfs_ioops xfs_iocore_xfs
;
597 extern int xfs_init(void);
598 extern void xfs_cleanup(void);
600 #endif /* __KERNEL__ */
602 #endif /* __XFS_MOUNT_H__ */