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;
66 #define AIL_LOCK_T lock_t
67 #define AIL_LOCKINIT(x,y) spinlock_init(x,y)
68 #define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
69 #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock)
70 #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s)
74 * Prototypes and functions for the Data Migration subsystem.
77 typedef int (*xfs_send_data_t)(int, bhv_vnode_t *,
78 xfs_off_t, size_t, int, bhv_vrwlock_t *);
79 typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
80 typedef int (*xfs_send_destroy_t)(bhv_vnode_t *, dm_right_t);
81 typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
83 dm_right_t, bhv_vnode_t *, dm_right_t,
84 char *, char *, mode_t, int, int);
85 typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
87 typedef void (*xfs_send_unmount_t)(struct xfs_mount *, bhv_vnode_t *,
88 dm_right_t, mode_t, int, int);
90 typedef struct xfs_dmops {
91 xfs_send_data_t xfs_send_data;
92 xfs_send_mmap_t xfs_send_mmap;
93 xfs_send_destroy_t xfs_send_destroy;
94 xfs_send_namesp_t xfs_send_namesp;
95 xfs_send_mount_t xfs_send_mount;
96 xfs_send_unmount_t xfs_send_unmount;
99 #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
100 (*(mp)->m_dm_ops->xfs_send_data)(ev,vp,off,len,fl,lock)
101 #define XFS_SEND_MMAP(mp, vma,fl) \
102 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
103 #define XFS_SEND_DESTROY(mp, vp,right) \
104 (*(mp)->m_dm_ops->xfs_send_destroy)(vp,right)
105 #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
106 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
107 #define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
108 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl)
109 #define XFS_SEND_MOUNT(mp,right,path,name) \
110 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
111 #define XFS_SEND_UNMOUNT(mp, vp,right,mode,rval,fl) \
112 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,vp,right,mode,rval,fl)
116 * Prototypes and functions for the Quota Management subsystem.
121 struct xfs_quotainfo;
123 typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
124 typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
125 typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
126 typedef void (*xfs_qmdone_t)(struct xfs_mount *);
127 typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
128 typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
129 typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
130 typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
131 typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
132 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
133 struct xfs_dquot **, struct xfs_dquot **);
134 typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
135 struct xfs_dquot *, struct xfs_dquot *);
136 typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
137 typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
138 struct xfs_trans *, struct xfs_inode *,
139 struct xfs_dquot **, struct xfs_dquot *);
140 typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
141 struct xfs_dquot *, struct xfs_dquot *, uint);
142 typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, bhv_statvfs_t *);
143 typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags);
144 typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t);
146 typedef struct xfs_qmops {
147 xfs_qminit_t xfs_qminit;
148 xfs_qmdone_t xfs_qmdone;
149 xfs_qmmount_t xfs_qmmount;
150 xfs_qmunmount_t xfs_qmunmount;
151 xfs_dqrele_t xfs_dqrele;
152 xfs_dqattach_t xfs_dqattach;
153 xfs_dqdetach_t xfs_dqdetach;
154 xfs_dqpurgeall_t xfs_dqpurgeall;
155 xfs_dqvopalloc_t xfs_dqvopalloc;
156 xfs_dqvopcreate_t xfs_dqvopcreate;
157 xfs_dqvoprename_t xfs_dqvoprename;
158 xfs_dqvopchown_t xfs_dqvopchown;
159 xfs_dqvopchownresv_t xfs_dqvopchownresv;
160 xfs_dqstatvfs_t xfs_dqstatvfs;
161 xfs_dqsync_t xfs_dqsync;
162 xfs_quotactl_t xfs_quotactl;
163 struct xfs_dqtrxops *xfs_dqtrxops;
166 #define XFS_QM_INIT(mp, mnt, fl) \
167 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
168 #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
169 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl, mfsi_flags)
170 #define XFS_QM_UNMOUNT(mp) \
171 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
172 #define XFS_QM_DONE(mp) \
173 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
174 #define XFS_QM_DQRELE(mp, dq) \
175 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
176 #define XFS_QM_DQATTACH(mp, ip, fl) \
177 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
178 #define XFS_QM_DQDETACH(mp, ip) \
179 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
180 #define XFS_QM_DQPURGEALL(mp, fl) \
181 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
182 #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
183 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
184 #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
185 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
186 #define XFS_QM_DQVOPRENAME(mp, ip) \
187 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
188 #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
189 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
190 #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
191 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
192 #define XFS_QM_DQSTATVFS(ip, statp) \
193 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
194 #define XFS_QM_DQSYNC(mp, flags) \
195 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
196 #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
197 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
201 * Prototypes and functions for I/O core modularization.
204 typedef int (*xfs_ioinit_t)(struct xfs_mount *,
205 struct xfs_mount_args *, int);
206 typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *,
207 xfs_fileoff_t, xfs_filblks_t, int,
208 xfs_fsblock_t *, xfs_extlen_t,
209 struct xfs_bmbt_irec *, int *,
210 struct xfs_bmap_free *, struct xfs_extdelta *);
211 typedef int (*xfs_bunmapi_t)(struct xfs_trans *,
212 void *, xfs_fileoff_t,
213 xfs_filblks_t, int, xfs_extnum_t,
214 xfs_fsblock_t *, struct xfs_bmap_free *,
215 struct xfs_extdelta *, int *);
216 typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
217 typedef int (*xfs_iomap_write_direct_t)(
218 void *, xfs_off_t, size_t, int,
219 struct xfs_bmbt_irec *, int *, int);
220 typedef int (*xfs_iomap_write_delay_t)(
221 void *, xfs_off_t, size_t, int,
222 struct xfs_bmbt_irec *, int *);
223 typedef int (*xfs_iomap_write_allocate_t)(
224 void *, xfs_off_t, size_t,
225 struct xfs_bmbt_irec *, int *);
226 typedef int (*xfs_iomap_write_unwritten_t)(
227 void *, xfs_off_t, size_t);
228 typedef uint (*xfs_lck_map_shared_t)(void *);
229 typedef void (*xfs_lock_t)(void *, uint);
230 typedef void (*xfs_lock_demote_t)(void *, uint);
231 typedef int (*xfs_lock_nowait_t)(void *, uint);
232 typedef void (*xfs_unlk_t)(void *, unsigned int);
233 typedef xfs_fsize_t (*xfs_size_t)(void *);
234 typedef xfs_fsize_t (*xfs_iodone_t)(struct xfs_mount *);
235 typedef int (*xfs_swap_extents_t)(void *, void *,
236 struct xfs_swapext*);
238 typedef struct xfs_ioops {
239 xfs_ioinit_t xfs_ioinit;
240 xfs_bmapi_t xfs_bmapi_func;
241 xfs_bunmapi_t xfs_bunmapi_func;
242 xfs_bmap_eof_t xfs_bmap_eof_func;
243 xfs_iomap_write_direct_t xfs_iomap_write_direct;
244 xfs_iomap_write_delay_t xfs_iomap_write_delay;
245 xfs_iomap_write_allocate_t xfs_iomap_write_allocate;
246 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten;
247 xfs_lock_t xfs_ilock;
248 xfs_lck_map_shared_t xfs_lck_map_shared;
249 xfs_lock_demote_t xfs_ilock_demote;
250 xfs_lock_nowait_t xfs_ilock_nowait;
251 xfs_unlk_t xfs_unlock;
252 xfs_size_t xfs_size_func;
253 xfs_iodone_t xfs_iodone;
254 xfs_swap_extents_t xfs_swap_extents_func;
257 #define XFS_IOINIT(mp, args, flags) \
258 (*(mp)->m_io_ops.xfs_ioinit)(mp, args, flags)
259 #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \
260 (*(mp)->m_io_ops.xfs_bmapi_func) \
261 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta)
262 #define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \
263 (*(mp)->m_io_ops.xfs_bunmapi_func) \
264 (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done)
265 #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
266 (*(mp)->m_io_ops.xfs_bmap_eof_func) \
267 ((io)->io_obj, endoff, whichfork, eof)
268 #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
269 (*(mp)->m_io_ops.xfs_iomap_write_direct) \
270 ((io)->io_obj, offset, count, flags, mval, nmap, found)
271 #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
272 (*(mp)->m_io_ops.xfs_iomap_write_delay) \
273 ((io)->io_obj, offset, count, flags, mval, nmap)
274 #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
275 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
276 ((io)->io_obj, offset, count, mval, nmap)
277 #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
278 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
279 ((io)->io_obj, offset, count)
280 #define XFS_LCK_MAP_SHARED(mp, io) \
281 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
282 #define XFS_ILOCK(mp, io, mode) \
283 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
284 #define XFS_ILOCK_NOWAIT(mp, io, mode) \
285 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
286 #define XFS_IUNLOCK(mp, io, mode) \
287 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
288 #define XFS_ILOCK_DEMOTE(mp, io, mode) \
289 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
290 #define XFS_SIZE(mp, io) \
291 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
292 #define XFS_IODONE(mp) \
293 (*(mp)->m_io_ops.xfs_iodone)(mp)
294 #define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \
295 (*(mp)->m_io_ops.xfs_swap_extents_func) \
296 ((io)->io_obj, (tio)->io_obj, sxp)
298 #ifdef HAVE_PERCPU_SB
301 * Valid per-cpu incore superblock counters. Note that if you add new counters,
302 * you may need to define new counter disabled bit field descriptors as there
303 * are more possible fields in the superblock that can fit in a bitfield on a
304 * 32 bit platform. The XFS_SBS_* values for the current current counters just
307 typedef struct xfs_icsb_cnts {
308 uint64_t icsb_fdblocks;
310 uint64_t icsb_icount;
311 unsigned long icsb_flags;
314 #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
316 #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */
317 #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
319 extern int xfs_icsb_init_counters(struct xfs_mount *);
320 extern void xfs_icsb_reinit_counters(struct xfs_mount *);
321 extern void xfs_icsb_sync_counters_flags(struct xfs_mount *, int);
324 #define xfs_icsb_init_counters(mp) (0)
325 #define xfs_icsb_reinit_counters(mp) do { } while (0)
326 #define xfs_icsb_sync_counters_flags(mp, flags) do { } while (0)
329 typedef struct xfs_mount {
330 struct super_block *m_super;
331 xfs_tid_t m_tid; /* next unused tid for fs */
332 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */
333 xfs_ail_entry_t m_ail; /* fs active log item list */
334 uint m_ail_gen; /* fs AIL generation count */
335 xfs_sb_t m_sb; /* copy of fs superblock */
336 lock_t m_sb_lock; /* sb counter mutex */
337 struct xfs_buf *m_sb_bp; /* buffer for superblock */
338 char *m_fsname; /* filesystem name */
339 int m_fsname_len; /* strlen of fs name */
340 char *m_rtname; /* realtime device name */
341 char *m_logname; /* external log device name */
342 int m_bsize; /* fs logical block size */
343 xfs_agnumber_t m_agfrotor; /* last ag where space found */
344 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
345 lock_t m_agirotor_lock;/* .. and lock protecting it */
346 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
347 struct xfs_inode *m_inodes; /* active inode list */
348 struct list_head m_del_inodes; /* inodes to reclaim */
349 mutex_t m_ilock; /* inode list mutex */
350 uint m_ireclaims; /* count of calls to reclaim*/
351 uint m_readio_log; /* min read size log bytes */
352 uint m_readio_blocks; /* min read size blocks */
353 uint m_writeio_log; /* min write size log bytes */
354 uint m_writeio_blocks; /* min write size blocks */
355 struct log *m_log; /* log specific stuff */
356 int m_logbufs; /* number of log buffers */
357 int m_logbsize; /* size of each log buffer */
358 uint m_rsumlevels; /* rt summary levels */
359 uint m_rsumsize; /* size of rt summary, bytes */
360 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
361 struct xfs_inode *m_rsumip; /* pointer to summary inode */
362 struct xfs_inode *m_rootip; /* pointer to root directory */
363 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
364 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
365 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
366 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
367 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
368 __uint8_t m_blkbit_log; /* blocklog + NBBY */
369 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
370 __uint8_t m_agno_log; /* log #ag's */
371 __uint8_t m_agino_log; /* #bits for agino in inum */
372 __uint16_t m_inode_cluster_size;/* min inode buf size */
373 uint m_blockmask; /* sb_blocksize-1 */
374 uint m_blockwsize; /* sb_blocksize in words */
375 uint m_blockwmask; /* blockwsize-1 */
376 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
377 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
378 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
379 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
380 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
381 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
382 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
383 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
384 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
385 struct xfs_perag *m_perag; /* per-ag accounting info */
386 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
387 struct mutex m_growlock; /* growfs mutex */
388 int m_fixedfsid[2]; /* unchanged for life of FS */
389 uint m_dmevmask; /* DMI events for this FS */
390 __uint64_t m_flags; /* global mount flags */
391 uint m_attroffset; /* inode attribute offset */
392 uint m_dir_node_ents; /* #entries in a dir danode */
393 uint m_attr_node_ents; /* #entries in attr danode */
394 int m_ialloc_inos; /* inodes in inode allocation */
395 int m_ialloc_blks; /* blocks in inode allocation */
396 int m_litino; /* size of inode union area */
397 int m_inoalign_mask;/* mask sb_inoalignmt if used */
398 uint m_qflags; /* quota status flags */
399 xfs_trans_reservations_t m_reservations;/* precomputed res values */
400 __uint64_t m_maxicount; /* maximum inode count */
401 __uint64_t m_maxioffset; /* maximum inode offset */
402 __uint64_t m_resblks; /* total reserved blocks */
403 __uint64_t m_resblks_avail;/* available reserved blocks */
405 xfs_ino_t m_inoadd; /* add value for ino64_offset */
407 int m_dalign; /* stripe unit */
408 int m_swidth; /* stripe width */
409 int m_sinoalign; /* stripe unit inode alignment */
410 int m_attr_magicpct;/* 37% of the blocksize */
411 int m_dir_magicpct; /* 37% of the dir blocksize */
412 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
413 __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
414 field governed by m_ilock */
415 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
416 int m_dirblksize; /* directory block sz--bytes */
417 int m_dirblkfsbs; /* directory block sz--fsbs */
418 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
419 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
420 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
421 uint m_chsize; /* size of next field */
422 struct xfs_chash *m_chash; /* fs private inode per-cluster
424 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
425 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
426 struct xfs_ioops m_io_ops; /* vector of I/O ops */
427 atomic_t m_active_trans; /* number trans frozen */
428 #ifdef HAVE_PERCPU_SB
429 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
430 unsigned long m_icsb_counters; /* disabled per-cpu counters */
431 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
432 struct mutex m_icsb_mutex; /* balancer sync lock */
434 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
435 struct task_struct *m_sync_task; /* generalised sync thread */
436 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
437 struct list_head m_sync_list; /* sync thread work item list */
438 spinlock_t m_sync_lock; /* work item list lock */
439 int m_sync_seq; /* sync thread generation no. */
440 wait_queue_head_t m_wait_single_sync_task;
446 #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
447 must be synchronous except
448 for space allocations */
449 #define XFS_MOUNT_INO64 (1ULL << 1)
450 #define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
451 #define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
452 #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
453 operations, typically for
454 disk errors in metadata */
455 #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
457 #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
459 #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
460 #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
461 #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
462 #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
463 #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
464 #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
465 /* osyncisdsync is now default*/
466 #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
468 #define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
469 #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
470 #define XFS_MOUNT_BARRIER (1ULL << 17)
471 #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/
472 #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
474 #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
475 #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
476 #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
477 * I/O size in stat() */
478 #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
480 #define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
485 * Default minimum read and write sizes.
487 #define XFS_READIO_LOG_LARGE 16
488 #define XFS_WRITEIO_LOG_LARGE 16
491 * Max and min values for mount-option defined I/O
492 * preallocation sizes.
494 #define XFS_MAX_IO_LOG 30 /* 1G */
495 #define XFS_MIN_IO_LOG PAGE_SHIFT
498 * Synchronous read and write sizes. This should be
499 * better for NFSv2 wsync filesystems.
501 #define XFS_WSYNC_READIO_LOG 15 /* 32K */
502 #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
505 * Allow large block sizes to be reported to userspace programs if the
506 * "largeio" mount option is used.
508 * If compatibility mode is specified, simply return the basic unit of caching
509 * so that we don't get inefficient read/modify/write I/O from user apps.
512 * If the underlying volume is a stripe, then return the stripe width in bytes
513 * as the recommended I/O size. It is not a stripe and we've set a default
514 * buffered I/O size, return that, otherwise return the compat default.
516 static inline unsigned long
517 xfs_preferred_iosize(xfs_mount_t *mp)
519 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
520 return PAGE_CACHE_SIZE;
521 return (mp->m_swidth ?
522 (mp->m_swidth << mp->m_sb.sb_blocklog) :
523 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
524 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
528 #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
530 #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
531 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
532 #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
533 void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
535 #define xfs_force_shutdown(m,f) \
536 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
539 * Flags for xfs_mountfs
541 #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
542 #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
543 /* XFS_MFSI_RRINODES */
544 #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
546 #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
547 /* XFS_MFSI_CONVERT_SUNIT */
548 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
550 #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
551 static inline xfs_agnumber_t
552 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
554 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
555 do_div(ld, mp->m_sb.sb_agblocks);
556 return (xfs_agnumber_t) ld;
559 #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
560 static inline xfs_agblock_t
561 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
563 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
564 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
568 * perag get/put wrappers for eventual ref counting
570 static inline xfs_perag_t *
571 xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
573 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
577 xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
579 /* nothing to see here, move along */
583 * Per-cpu superblock locking functions
585 #ifdef HAVE_PERCPU_SB
587 xfs_icsb_lock(xfs_mount_t *mp)
589 mutex_lock(&mp->m_icsb_mutex);
593 xfs_icsb_unlock(xfs_mount_t *mp)
595 mutex_unlock(&mp->m_icsb_mutex);
598 #define xfs_icsb_lock(mp)
599 #define xfs_icsb_unlock(mp)
603 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
604 * xfs_growfs can specify a few fields which are more than int limit
606 typedef struct xfs_mod_sb {
607 xfs_sb_field_t msb_field; /* Field to modify, see below */
608 int64_t msb_delta; /* Change to make to specified field */
611 #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
612 #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
613 #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
614 #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
616 extern xfs_mount_t *xfs_mount_init(void);
617 extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
618 extern int xfs_log_sbcount(xfs_mount_t *, uint);
619 extern void xfs_mount_free(xfs_mount_t *mp);
620 extern int xfs_mountfs(xfs_mount_t *mp, int);
621 extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
623 extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
624 extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *);
625 extern int xfs_unmountfs_writesb(xfs_mount_t *);
626 extern int xfs_unmount_flush(xfs_mount_t *, int);
627 extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
628 extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
630 extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
632 extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
633 extern int xfs_readsb(xfs_mount_t *, int);
634 extern void xfs_freesb(xfs_mount_t *);
635 extern int xfs_fs_writable(xfs_mount_t *);
636 extern int xfs_syncsub(xfs_mount_t *, int, int *);
637 extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
638 extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
639 extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
640 extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
641 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
643 extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *);
644 extern void xfs_dmops_put(struct xfs_mount *);
645 extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *);
646 extern void xfs_qmops_put(struct xfs_mount *);
648 extern struct xfs_dmops xfs_dmcore_xfs;
649 extern struct xfs_ioops xfs_iocore_xfs;
651 extern int xfs_init(void);
652 extern void xfs_cleanup(void);
654 #endif /* __KERNEL__ */
656 #endif /* __XFS_MOUNT_H__ */
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