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))
59 struct xfs_mount_args;
70 extern struct bhv_vfsops xfs_vfsops;
71 extern struct bhv_vnodeops xfs_vnodeops;
73 #define AIL_LOCK_T lock_t
74 #define AIL_LOCKINIT(x,y) spinlock_init(x,y)
75 #define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
76 #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock)
77 #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s)
81 * Prototypes and functions for the Data Migration subsystem.
84 typedef int (*xfs_send_data_t)(int, struct bhv_vnode *,
85 xfs_off_t, size_t, int, bhv_vrwlock_t *);
86 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
87 typedef int (*xfs_send_destroy_t)(struct bhv_vnode *, dm_right_t);
88 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct bhv_vfs *,
90 dm_right_t, struct bhv_vnode *, dm_right_t,
91 char *, char *, mode_t, int, int);
92 typedef void (*xfs_send_unmount_t)(struct bhv_vfs *, struct bhv_vnode *,
93 dm_right_t, mode_t, int, int);
95 typedef struct xfs_dmops {
96 xfs_send_data_t xfs_send_data;
97 xfs_send_mmap_t xfs_send_mmap;
98 xfs_send_destroy_t xfs_send_destroy;
99 xfs_send_namesp_t xfs_send_namesp;
100 xfs_send_unmount_t xfs_send_unmount;
103 #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
104 (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock)
105 #define XFS_SEND_MMAP(mp, vma,fl) \
106 (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl)
107 #define XFS_SEND_DESTROY(mp, vp,right) \
108 (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right)
109 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
110 (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
111 #define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
112 (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl)
113 #define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \
114 (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl)
118 * Prototypes and functions for the Quota Management subsystem.
123 struct xfs_quotainfo;
125 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
126 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
127 typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
128 typedef void (*xfs_qmdone_t)(struct xfs_mount *);
129 typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
130 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
131 typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
132 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
133 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
134 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
135 struct xfs_dquot **, struct xfs_dquot **);
136 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
137 struct xfs_dquot *, struct xfs_dquot *);
138 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
139 typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
140 struct xfs_trans *, struct xfs_inode *,
141 struct xfs_dquot **, struct xfs_dquot *);
142 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
143 struct xfs_dquot *, struct xfs_dquot *, uint);
145 typedef struct xfs_qmops {
146 xfs_qminit_t xfs_qminit;
147 xfs_qmdone_t xfs_qmdone;
148 xfs_qmmount_t xfs_qmmount;
149 xfs_qmunmount_t xfs_qmunmount;
150 xfs_dqrele_t xfs_dqrele;
151 xfs_dqattach_t xfs_dqattach;
152 xfs_dqdetach_t xfs_dqdetach;
153 xfs_dqpurgeall_t xfs_dqpurgeall;
154 xfs_dqvopalloc_t xfs_dqvopalloc;
155 xfs_dqvopcreate_t xfs_dqvopcreate;
156 xfs_dqvoprename_t xfs_dqvoprename;
157 xfs_dqvopchown_t xfs_dqvopchown;
158 xfs_dqvopchownresv_t xfs_dqvopchownresv;
159 struct xfs_dqtrxops *xfs_dqtrxops;
162 #define XFS_QM_INIT(mp, mnt, fl) \
163 (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl)
164 #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
165 (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags)
166 #define XFS_QM_UNMOUNT(mp) \
167 (*(mp)->m_qm_ops.xfs_qmunmount)(mp)
168 #define XFS_QM_DONE(mp) \
169 (*(mp)->m_qm_ops.xfs_qmdone)(mp)
170 #define XFS_QM_DQRELE(mp, dq) \
171 (*(mp)->m_qm_ops.xfs_dqrele)(dq)
172 #define XFS_QM_DQATTACH(mp, ip, fl) \
173 (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl)
174 #define XFS_QM_DQDETACH(mp, ip) \
175 (*(mp)->m_qm_ops.xfs_dqdetach)(ip)
176 #define XFS_QM_DQPURGEALL(mp, fl) \
177 (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl)
178 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
179 (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
180 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
181 (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2)
182 #define XFS_QM_DQVOPRENAME(mp, ip) \
183 (*(mp)->m_qm_ops.xfs_dqvoprename)(ip)
184 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
185 (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq)
186 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
187 (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
191 * Prototypes and functions for I/O core modularization.
194 typedef int (*xfs_ioinit_t)(struct bhv_vfs *,
195 struct xfs_mount_args *, int);
196 typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *,
197 xfs_fileoff_t, xfs_filblks_t, int,
198 xfs_fsblock_t *, xfs_extlen_t,
199 struct xfs_bmbt_irec *, int *,
200 struct xfs_bmap_free *, struct xfs_extdelta *);
201 typedef int (*xfs_bunmapi_t)(struct xfs_trans *,
202 void *, xfs_fileoff_t,
203 xfs_filblks_t, int, xfs_extnum_t,
204 xfs_fsblock_t *, struct xfs_bmap_free *,
205 struct xfs_extdelta *, int *);
206 typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
207 typedef int (*xfs_iomap_write_direct_t)(
208 void *, xfs_off_t, size_t, int,
209 struct xfs_bmbt_irec *, int *, int);
210 typedef int (*xfs_iomap_write_delay_t)(
211 void *, xfs_off_t, size_t, int,
212 struct xfs_bmbt_irec *, int *);
213 typedef int (*xfs_iomap_write_allocate_t)(
214 void *, xfs_off_t, size_t,
215 struct xfs_bmbt_irec *, int *);
216 typedef int (*xfs_iomap_write_unwritten_t)(
217 void *, xfs_off_t, size_t);
218 typedef uint (*xfs_lck_map_shared_t)(void *);
219 typedef void (*xfs_lock_t)(void *, uint);
220 typedef void (*xfs_lock_demote_t)(void *, uint);
221 typedef int (*xfs_lock_nowait_t)(void *, uint);
222 typedef void (*xfs_unlk_t)(void *, unsigned int);
223 typedef xfs_fsize_t (*xfs_size_t)(void *);
224 typedef xfs_fsize_t (*xfs_iodone_t)(struct bhv_vfs *);
225 typedef int (*xfs_swap_extents_t)(void *, void *,
226 struct xfs_swapext*);
228 typedef struct xfs_ioops {
229 xfs_ioinit_t xfs_ioinit;
230 xfs_bmapi_t xfs_bmapi_func;
231 xfs_bunmapi_t xfs_bunmapi_func;
232 xfs_bmap_eof_t xfs_bmap_eof_func;
233 xfs_iomap_write_direct_t xfs_iomap_write_direct;
234 xfs_iomap_write_delay_t xfs_iomap_write_delay;
235 xfs_iomap_write_allocate_t xfs_iomap_write_allocate;
236 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten;
237 xfs_lock_t xfs_ilock;
238 xfs_lck_map_shared_t xfs_lck_map_shared;
239 xfs_lock_demote_t xfs_ilock_demote;
240 xfs_lock_nowait_t xfs_ilock_nowait;
241 xfs_unlk_t xfs_unlock;
242 xfs_size_t xfs_size_func;
243 xfs_iodone_t xfs_iodone;
244 xfs_swap_extents_t xfs_swap_extents_func;
247 #define XFS_IOINIT(vfsp, args, flags) \
248 (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
249 #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \
250 (*(mp)->m_io_ops.xfs_bmapi_func) \
251 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta)
252 #define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \
253 (*(mp)->m_io_ops.xfs_bunmapi_func) \
254 (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done)
255 #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
256 (*(mp)->m_io_ops.xfs_bmap_eof_func) \
257 ((io)->io_obj, endoff, whichfork, eof)
258 #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
259 (*(mp)->m_io_ops.xfs_iomap_write_direct) \
260 ((io)->io_obj, offset, count, flags, mval, nmap, found)
261 #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
262 (*(mp)->m_io_ops.xfs_iomap_write_delay) \
263 ((io)->io_obj, offset, count, flags, mval, nmap)
264 #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
265 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
266 ((io)->io_obj, offset, count, mval, nmap)
267 #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
268 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
269 ((io)->io_obj, offset, count)
270 #define XFS_LCK_MAP_SHARED(mp, io) \
271 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
272 #define XFS_ILOCK(mp, io, mode) \
273 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
274 #define XFS_ILOCK_NOWAIT(mp, io, mode) \
275 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
276 #define XFS_IUNLOCK(mp, io, mode) \
277 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
278 #define XFS_ILOCK_DEMOTE(mp, io, mode) \
279 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
280 #define XFS_SIZE(mp, io) \
281 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
282 #define XFS_IODONE(vfsp) \
283 (*(mp)->m_io_ops.xfs_iodone)(vfsp)
284 #define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \
285 (*(mp)->m_io_ops.xfs_swap_extents_func) \
286 ((io)->io_obj, (tio)->io_obj, sxp)
288 #ifdef HAVE_PERCPU_SB
291 * Valid per-cpu incore superblock counters. Note that if you add new counters,
292 * you may need to define new counter disabled bit field descriptors as there
293 * are more possible fields in the superblock that can fit in a bitfield on a
294 * 32 bit platform. The XFS_SBS_* values for the current current counters just
297 typedef struct xfs_icsb_cnts {
298 uint64_t icsb_fdblocks;
300 uint64_t icsb_icount;
301 unsigned long icsb_flags;
304 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
306 #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */
307 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
309 extern int xfs_icsb_init_counters(struct xfs_mount *);
310 extern void xfs_icsb_reinit_counters(struct xfs_mount *);
311 extern void xfs_icsb_sync_counters_flags(struct xfs_mount *, int);
314 #define xfs_icsb_init_counters(mp) (0)
315 #define xfs_icsb_reinit_counters(mp) do { } while (0)
316 #define xfs_icsb_sync_counters_flags(mp, flags) do { } while (0)
319 typedef struct xfs_mount {
320 bhv_desc_t m_bhv; /* vfs xfs behavior */
321 xfs_tid_t m_tid; /* next unused tid for fs */
322 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */
323 xfs_ail_entry_t m_ail; /* fs active log item list */
324 uint m_ail_gen; /* fs AIL generation count */
325 xfs_sb_t m_sb; /* copy of fs superblock */
326 lock_t m_sb_lock; /* sb counter mutex */
327 struct xfs_buf *m_sb_bp; /* buffer for superblock */
328 char *m_fsname; /* filesystem name */
329 int m_fsname_len; /* strlen of fs name */
330 char *m_rtname; /* realtime device name */
331 char *m_logname; /* external log device name */
332 int m_bsize; /* fs logical block size */
333 xfs_agnumber_t m_agfrotor; /* last ag where space found */
334 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
335 lock_t m_agirotor_lock;/* .. and lock protecting it */
336 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
337 size_t m_ihsize; /* size of next field */
338 struct xfs_ihash *m_ihash; /* fs private inode hash table*/
339 struct xfs_inode *m_inodes; /* active inode list */
340 struct list_head m_del_inodes; /* inodes to reclaim */
341 mutex_t m_ilock; /* inode list mutex */
342 uint m_ireclaims; /* count of calls to reclaim*/
343 uint m_readio_log; /* min read size log bytes */
344 uint m_readio_blocks; /* min read size blocks */
345 uint m_writeio_log; /* min write size log bytes */
346 uint m_writeio_blocks; /* min write size blocks */
347 struct log *m_log; /* log specific stuff */
348 int m_logbufs; /* number of log buffers */
349 int m_logbsize; /* size of each log buffer */
350 uint m_rsumlevels; /* rt summary levels */
351 uint m_rsumsize; /* size of rt summary, bytes */
352 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
353 struct xfs_inode *m_rsumip; /* pointer to summary inode */
354 struct xfs_inode *m_rootip; /* pointer to root directory */
355 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
356 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
357 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
358 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
359 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
360 __uint8_t m_blkbit_log; /* blocklog + NBBY */
361 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
362 __uint8_t m_agno_log; /* log #ag's */
363 __uint8_t m_agino_log; /* #bits for agino in inum */
364 __uint8_t m_nreadaheads; /* #readahead buffers */
365 __uint16_t m_inode_cluster_size;/* min inode buf size */
366 uint m_blockmask; /* sb_blocksize-1 */
367 uint m_blockwsize; /* sb_blocksize in words */
368 uint m_blockwmask; /* blockwsize-1 */
369 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
370 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
371 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
372 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
373 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
374 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
375 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
376 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
377 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
378 struct xfs_perag *m_perag; /* per-ag accounting info */
379 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
380 sema_t m_growlock; /* growfs mutex */
381 int m_fixedfsid[2]; /* unchanged for life of FS */
382 uint m_dmevmask; /* DMI events for this FS */
383 __uint64_t m_flags; /* global mount flags */
384 uint m_attroffset; /* inode attribute offset */
385 uint m_dir_node_ents; /* #entries in a dir danode */
386 uint m_attr_node_ents; /* #entries in attr danode */
387 int m_ialloc_inos; /* inodes in inode allocation */
388 int m_ialloc_blks; /* blocks in inode allocation */
389 int m_litino; /* size of inode union area */
390 int m_inoalign_mask;/* mask sb_inoalignmt if used */
391 uint m_qflags; /* quota status flags */
392 xfs_trans_reservations_t m_reservations;/* precomputed res values */
393 __uint64_t m_maxicount; /* maximum inode count */
394 __uint64_t m_maxioffset; /* maximum inode offset */
395 __uint64_t m_resblks; /* total reserved blocks */
396 __uint64_t m_resblks_avail;/* available reserved blocks */
398 xfs_ino_t m_inoadd; /* add value for ino64_offset */
400 int m_dalign; /* stripe unit */
401 int m_swidth; /* stripe width */
402 int m_sinoalign; /* stripe unit inode alignment */
403 int m_attr_magicpct;/* 37% of the blocksize */
404 int m_dir_magicpct; /* 37% of the dir blocksize */
405 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
406 __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
407 field governed by m_ilock */
408 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
409 int m_dirblksize; /* directory block sz--bytes */
410 int m_dirblkfsbs; /* directory block sz--fsbs */
411 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
412 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
413 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
414 uint m_chsize; /* size of next field */
415 struct xfs_chash *m_chash; /* fs private inode per-cluster
417 struct xfs_dmops m_dm_ops; /* vector of DMI ops */
418 struct xfs_qmops m_qm_ops; /* vector of XQM ops */
419 struct xfs_ioops m_io_ops; /* vector of I/O ops */
420 atomic_t m_active_trans; /* number trans frozen */
421 #ifdef HAVE_PERCPU_SB
422 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
423 unsigned long m_icsb_counters; /* disabled per-cpu counters */
424 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
425 struct mutex m_icsb_mutex; /* balancer sync lock */
432 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
433 must be synchronous except
434 for space allocations */
435 #define XFS_MOUNT_INO64 (1ULL << 1)
436 /* (1ULL << 2) -- currently unused */
437 /* (1ULL << 3) -- currently unused */
438 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
439 operations, typically for
440 disk errors in metadata */
441 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
443 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
445 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
446 /* (1ULL << 9) -- currently unused */
447 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
448 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
449 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
450 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
451 /* osyncisdsync is now default*/
452 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
454 /* (1ULL << 15) -- currently unused */
455 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
456 #define XFS_MOUNT_BARRIER (1ULL << 17)
457 #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/
458 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
460 #define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */
461 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
462 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
463 * I/O size in stat() */
464 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
469 * Default minimum read and write sizes.
471 #define XFS_READIO_LOG_LARGE 16
472 #define XFS_WRITEIO_LOG_LARGE 16
475 * Max and min values for mount-option defined I/O
476 * preallocation sizes.
478 #define XFS_MAX_IO_LOG 30 /* 1G */
479 #define XFS_MIN_IO_LOG PAGE_SHIFT
482 * Synchronous read and write sizes. This should be
483 * better for NFSv2 wsync filesystems.
485 #define XFS_WSYNC_READIO_LOG 15 /* 32K */
486 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
489 * Allow large block sizes to be reported to userspace programs if the
490 * "largeio" mount option is used.
492 * If compatibility mode is specified, simply return the basic unit of caching
493 * so that we don't get inefficient read/modify/write I/O from user apps.
496 * If the underlying volume is a stripe, then return the stripe width in bytes
497 * as the recommended I/O size. It is not a stripe and we've set a default
498 * buffered I/O size, return that, otherwise return the compat default.
500 static inline unsigned long
501 xfs_preferred_iosize(xfs_mount_t *mp)
503 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
504 return PAGE_CACHE_SIZE;
505 return (mp->m_swidth ?
506 (mp->m_swidth << mp->m_sb.sb_blocklog) :
507 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
508 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
512 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
514 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
515 #define xfs_force_shutdown(m,f) \
516 bhv_vfs_force_shutdown((XFS_MTOVFS(m)), f, __FILE__, __LINE__)
519 * Flags for xfs_mountfs
521 #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
522 #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
523 /* XFS_MFSI_RRINODES */
524 #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
526 #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
527 /* XFS_MFSI_CONVERT_SUNIT */
528 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
531 * Macros for getting from mount to vfs and back.
533 #define XFS_MTOVFS(mp) xfs_mtovfs(mp)
534 static inline struct bhv_vfs *xfs_mtovfs(xfs_mount_t *mp)
536 return bhvtovfs(&mp->m_bhv);
539 #define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
540 static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp)
542 return (xfs_mount_t *)BHV_PDATA(bdp);
545 #define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
546 static inline xfs_mount_t *xfs_vfstom(bhv_vfs_t *vfs)
548 return XFS_BHVTOM(bhv_lookup_range(VFS_BHVHEAD(vfs),
549 VFS_POSITION_XFS, VFS_POSITION_XFS));
552 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
553 static inline xfs_agnumber_t
554 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
556 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
557 do_div(ld, mp->m_sb.sb_agblocks);
558 return (xfs_agnumber_t) ld;
561 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
562 static inline xfs_agblock_t
563 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
565 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
566 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
570 * Per-cpu superblock locking functions
572 #ifdef HAVE_PERCPU_SB
574 xfs_icsb_lock(xfs_mount_t *mp)
576 mutex_lock(&mp->m_icsb_mutex);
580 xfs_icsb_unlock(xfs_mount_t *mp)
582 mutex_unlock(&mp->m_icsb_mutex);
585 #define xfs_icsb_lock(mp)
586 #define xfs_icsb_unlock(mp)
590 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
591 * xfs_growfs can specify a few fields which are more than int limit
593 typedef struct xfs_mod_sb {
594 xfs_sb_field_t msb_field; /* Field to modify, see below */
595 int64_t msb_delta; /* Change to make to specified field */
598 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
599 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
600 #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
601 #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
603 extern xfs_mount_t *xfs_mount_init(void);
604 extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
605 extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
606 extern int xfs_mountfs(struct bhv_vfs *, xfs_mount_t *mp, int);
607 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
609 extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
610 extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *);
611 extern int xfs_unmountfs_writesb(xfs_mount_t *);
612 extern int xfs_unmount_flush(xfs_mount_t *, int);
613 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
614 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
616 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
618 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
619 extern int xfs_readsb(xfs_mount_t *, int);
620 extern void xfs_freesb(xfs_mount_t *);
621 extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
622 extern int xfs_syncsub(xfs_mount_t *, int, int *);
623 extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
624 extern xfs_agnumber_t xfs_initialize_perag(struct bhv_vfs *, xfs_mount_t *,
626 extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);
628 extern struct xfs_dmops xfs_dmcore_stub;
629 extern struct xfs_qmops xfs_qmcore_stub;
630 extern struct xfs_ioops xfs_iocore_xfs;
632 extern int xfs_init(void);
633 extern void xfs_cleanup(void);
635 #endif /* __KERNEL__ */
637 #endif /* __XFS_MOUNT_H__ */
projects / linux-2.6 / blob