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CommitLineData
1da177e4 1/*
7b718769
NS
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
7b718769
NS
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
1da177e4
LT
7 * published by the Free Software Foundation.
8 *
7b718769
NS
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.
1da177e4 13 *
7b718769
NS
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
1da177e4
LT
17 */
18#ifndef __XFS_MOUNT_H__
19#define __XFS_MOUNT_H__
20
03135cf7 21
1da177e4
LT
22typedef 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;
45
1da177e4
LT
46#ifndef __KERNEL__
47/*
48 * Moved here from xfs_ag.h to avoid reordering header files
49 */
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))
54#else
55struct cred;
56struct log;
1da177e4 57struct xfs_mount_args;
1da177e4 58struct xfs_inode;
1da177e4
LT
59struct xfs_bmbt_irec;
60struct xfs_bmap_free;
3e57ecf6
OW
61struct xfs_extdelta;
62struct xfs_swapext;
2a82b8be 63struct xfs_mru_cache;
1da177e4 64
1da177e4
LT
65/*
66 * Prototypes and functions for the Data Migration subsystem.
67 */
68
bc4ac74a 69typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
126468b1 70 xfs_off_t, size_t, int, int *);
1da177e4 71typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
bc4ac74a 72typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
b267ce99 73typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
bc4ac74a
CH
74 struct xfs_inode *, dm_right_t,
75 struct xfs_inode *, dm_right_t,
556b8b16 76 const char *, const char *, mode_t, int, int);
293688ec
CH
77typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
78 char *, char *);
bc4ac74a 79typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
1da177e4
LT
80 dm_right_t, mode_t, int, int);
81
82typedef struct xfs_dmops {
83 xfs_send_data_t xfs_send_data;
84 xfs_send_mmap_t xfs_send_mmap;
85 xfs_send_destroy_t xfs_send_destroy;
86 xfs_send_namesp_t xfs_send_namesp;
293688ec 87 xfs_send_mount_t xfs_send_mount;
1da177e4
LT
88 xfs_send_unmount_t xfs_send_unmount;
89} xfs_dmops_t;
90
bc4ac74a
CH
91#define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
92 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
1da177e4 93#define XFS_SEND_MMAP(mp, vma,fl) \
293688ec 94 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
bc4ac74a
CH
95#define XFS_SEND_DESTROY(mp, ip,right) \
96 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
1da177e4 97#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
293688ec 98 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
b267ce99
CH
99#define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
100 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl)
293688ec
CH
101#define XFS_SEND_MOUNT(mp,right,path,name) \
102 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
bc4ac74a
CH
103#define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
104 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
1da177e4
LT
105
106
107/*
108 * Prototypes and functions for the Quota Management subsystem.
109 */
110
111struct xfs_dquot;
112struct xfs_dqtrxops;
113struct xfs_quotainfo;
114
115typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
116typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
117typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
118typedef void (*xfs_qmdone_t)(struct xfs_mount *);
119typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
120typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
121typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
122typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
123typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
c8ad20ff 124 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
1da177e4
LT
125 struct xfs_dquot **, struct xfs_dquot **);
126typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
127 struct xfs_dquot *, struct xfs_dquot *);
128typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
129typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
130 struct xfs_trans *, struct xfs_inode *,
131 struct xfs_dquot **, struct xfs_dquot *);
132typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
133 struct xfs_dquot *, struct xfs_dquot *, uint);
b09cc771
CH
134typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, bhv_statvfs_t *);
135typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags);
136typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t);
1da177e4
LT
137
138typedef struct xfs_qmops {
139 xfs_qminit_t xfs_qminit;
140 xfs_qmdone_t xfs_qmdone;
141 xfs_qmmount_t xfs_qmmount;
142 xfs_qmunmount_t xfs_qmunmount;
143 xfs_dqrele_t xfs_dqrele;
144 xfs_dqattach_t xfs_dqattach;
145 xfs_dqdetach_t xfs_dqdetach;
146 xfs_dqpurgeall_t xfs_dqpurgeall;
147 xfs_dqvopalloc_t xfs_dqvopalloc;
148 xfs_dqvopcreate_t xfs_dqvopcreate;
149 xfs_dqvoprename_t xfs_dqvoprename;
150 xfs_dqvopchown_t xfs_dqvopchown;
151 xfs_dqvopchownresv_t xfs_dqvopchownresv;
b09cc771
CH
152 xfs_dqstatvfs_t xfs_dqstatvfs;
153 xfs_dqsync_t xfs_dqsync;
154 xfs_quotactl_t xfs_quotactl;
1da177e4
LT
155 struct xfs_dqtrxops *xfs_dqtrxops;
156} xfs_qmops_t;
157
158#define XFS_QM_INIT(mp, mnt, fl) \
b09cc771 159 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
1da177e4 160#define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
b09cc771 161 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl, mfsi_flags)
1da177e4 162#define XFS_QM_UNMOUNT(mp) \
b09cc771 163 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
1da177e4 164#define XFS_QM_DONE(mp) \
b09cc771 165 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
1da177e4 166#define XFS_QM_DQRELE(mp, dq) \
b09cc771 167 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
1da177e4 168#define XFS_QM_DQATTACH(mp, ip, fl) \
b09cc771 169 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
1da177e4 170#define XFS_QM_DQDETACH(mp, ip) \
b09cc771 171 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
1da177e4 172#define XFS_QM_DQPURGEALL(mp, fl) \
b09cc771 173 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
c8ad20ff 174#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
b09cc771 175 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
1da177e4 176#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
b09cc771 177 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
1da177e4 178#define XFS_QM_DQVOPRENAME(mp, ip) \
b09cc771 179 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
1da177e4 180#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
b09cc771 181 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
1da177e4 182#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
b09cc771
CH
183 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
184#define XFS_QM_DQSTATVFS(ip, statp) \
185 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
186#define XFS_QM_DQSYNC(mp, flags) \
187 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
188#define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
189 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
1da177e4 190
8d280b98
DC
191#ifdef HAVE_PERCPU_SB
192
193/*
194 * Valid per-cpu incore superblock counters. Note that if you add new counters,
195 * you may need to define new counter disabled bit field descriptors as there
196 * are more possible fields in the superblock that can fit in a bitfield on a
197 * 32 bit platform. The XFS_SBS_* values for the current current counters just
198 * fit.
199 */
200typedef struct xfs_icsb_cnts {
201 uint64_t icsb_fdblocks;
202 uint64_t icsb_ifree;
203 uint64_t icsb_icount;
01e1b69c 204 unsigned long icsb_flags;
8d280b98
DC
205} xfs_icsb_cnts_t;
206
01e1b69c
DC
207#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
208
8d280b98
DC
209#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
210
211extern int xfs_icsb_init_counters(struct xfs_mount *);
5478eead 212extern void xfs_icsb_reinit_counters(struct xfs_mount *);
d4d90b57
CH
213extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
214extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
8d280b98
DC
215
216#else
217#define xfs_icsb_init_counters(mp) (0)
5478eead 218#define xfs_icsb_reinit_counters(mp) do { } while (0)
d4d90b57 219#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
7155054c 220#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
8d280b98 221#endif
1da177e4 222
249a8c11 223typedef struct xfs_ail {
535f6b37 224 struct list_head xa_ail;
249a8c11
DC
225 uint xa_gen;
226 struct task_struct *xa_task;
227 xfs_lsn_t xa_target;
228} xfs_ail_t;
229
1da177e4 230typedef struct xfs_mount {
b267ce99 231 struct super_block *m_super;
1da177e4 232 xfs_tid_t m_tid; /* next unused tid for fs */
287f3dad 233 spinlock_t m_ail_lock; /* fs AIL mutex */
249a8c11 234 xfs_ail_t m_ail; /* fs active log item list */
1da177e4 235 xfs_sb_t m_sb; /* copy of fs superblock */
3685c2a1 236 spinlock_t m_sb_lock; /* sb counter lock */
1da177e4
LT
237 struct xfs_buf *m_sb_bp; /* buffer for superblock */
238 char *m_fsname; /* filesystem name */
239 int m_fsname_len; /* strlen of fs name */
fc1f8c1c
NS
240 char *m_rtname; /* realtime device name */
241 char *m_logname; /* external log device name */
1da177e4
LT
242 int m_bsize; /* fs logical block size */
243 xfs_agnumber_t m_agfrotor; /* last ag where space found */
244 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
36e41eeb 245 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
1da177e4 246 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
1da177e4
LT
247 struct xfs_inode *m_inodes; /* active inode list */
248 struct list_head m_del_inodes; /* inodes to reclaim */
249 mutex_t m_ilock; /* inode list mutex */
250 uint m_ireclaims; /* count of calls to reclaim*/
251 uint m_readio_log; /* min read size log bytes */
252 uint m_readio_blocks; /* min read size blocks */
253 uint m_writeio_log; /* min write size log bytes */
254 uint m_writeio_blocks; /* min write size blocks */
255 struct log *m_log; /* log specific stuff */
256 int m_logbufs; /* number of log buffers */
257 int m_logbsize; /* size of each log buffer */
258 uint m_rsumlevels; /* rt summary levels */
259 uint m_rsumsize; /* size of rt summary, bytes */
260 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
261 struct xfs_inode *m_rsumip; /* pointer to summary inode */
262 struct xfs_inode *m_rootip; /* pointer to root directory */
263 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
264 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
265 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
266 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
1da177e4
LT
267 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
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 */
1da177e4
LT
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]; /* XFS_ALLOC_BLOCK_MAXRECS */
277 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
278 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
279 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
280 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
281 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
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) */
cc92e7ac 287 struct mutex m_growlock; /* growfs mutex */
1da177e4
LT
288 int m_fixedfsid[2]; /* unchanged for life of FS */
289 uint m_dmevmask; /* DMI events for this FS */
e718eeb4 290 __uint64_t m_flags; /* global mount flags */
1da177e4
LT
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 */
304#if XFS_BIG_INUMS
305 xfs_ino_t m_inoadd; /* add value for ino64_offset */
306#endif
307 int m_dalign; /* stripe unit */
308 int m_swidth; /* stripe width */
c41564b5 309 int m_sinoalign; /* stripe unit inode alignment */
1da177e4
LT
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 field governed by m_ilock */
315 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
1da177e4
LT
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
323 * hash table */
293688ec 324 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
b09cc771 325 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
1da177e4 326 atomic_t m_active_trans; /* number trans frozen */
8d280b98
DC
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 */
e8234a68 330 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
20b64285 331 struct mutex m_icsb_mutex; /* balancer sync lock */
8d280b98 332#endif
2a82b8be 333 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
74394496
CH
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;
1da177e4
LT
340} xfs_mount_t;
341
342/*
343 * Flags for m_flags.
344 */
92821e2b 345#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
1da177e4
LT
346 must be synchronous except
347 for space allocations */
92821e2b 348#define XFS_MOUNT_INO64 (1ULL << 1)
bd186aa9 349#define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
92821e2b 350#define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
e718eeb4 351#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
1da177e4
LT
352 operations, typically for
353 disk errors in metadata */
e718eeb4 354#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
1da177e4 355 user */
e718eeb4 356#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
1da177e4 357 allocations */
13059ff0 358#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
bd186aa9 359#define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
e718eeb4
NS
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 */
1da177e4 364 /* osyncisdsync is now default*/
e718eeb4 365#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
1da177e4 366 * 32 bits in size */
bd186aa9 367#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
e718eeb4
NS
368#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
369#define XFS_MOUNT_BARRIER (1ULL << 17)
1bd960ee 370#define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
e718eeb4 371#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
1da177e4 372 * allocation */
bd186aa9 373#define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
e718eeb4
NS
374#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
375#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
e8c8b3a7 376 * I/O size in stat() */
8d280b98
DC
377#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
378 counters */
2a82b8be
DC
379#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
380 allocator */
7c12f296 381#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
e8c8b3a7 382
1da177e4
LT
383
384/*
385 * Default minimum read and write sizes.
386 */
387#define XFS_READIO_LOG_LARGE 16
388#define XFS_WRITEIO_LOG_LARGE 16
389
390/*
1f443ad7
NS
391 * Max and min values for mount-option defined I/O
392 * preallocation sizes.
1da177e4 393 */
1f443ad7 394#define XFS_MAX_IO_LOG 30 /* 1G */
1da177e4
LT
395#define XFS_MIN_IO_LOG PAGE_SHIFT
396
397/*
398 * Synchronous read and write sizes. This should be
399 * better for NFSv2 wsync filesystems.
400 */
401#define XFS_WSYNC_READIO_LOG 15 /* 32K */
402#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
403
e8c8b3a7
DC
404/*
405 * Allow large block sizes to be reported to userspace programs if the
556b8b16 406 * "largeio" mount option is used.
e8c8b3a7
DC
407 *
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.
410 * Otherwise....
411 *
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.
415 */
416static inline unsigned long
417xfs_preferred_iosize(xfs_mount_t *mp)
418{
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)) :
425 PAGE_CACHE_SIZE));
426}
427
1da177e4
LT
428#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
429
92821e2b
DC
430#define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
431 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
1da177e4 432#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
745f6919
CH
433void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
434 int lnnum);
1da177e4 435#define xfs_force_shutdown(m,f) \
745f6919 436 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
1da177e4 437
1da177e4
LT
438/*
439 * Flags for xfs_mountfs
440 */
441#define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
442#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
764d1f89 443/* XFS_MFSI_RRINODES */
1da177e4
LT
444#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
445 /* log recovery */
446#define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
764d1f89
NS
447/* XFS_MFSI_CONVERT_SUNIT */
448#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
1da177e4 449
1da177e4 450#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
a844f451
NS
451static inline xfs_agnumber_t
452xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
1da177e4 453{
a844f451
NS
454 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
455 do_div(ld, mp->m_sb.sb_agblocks);
456 return (xfs_agnumber_t) ld;
1da177e4
LT
457}
458
1da177e4 459#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
a844f451
NS
460static inline xfs_agblock_t
461xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
1da177e4 462{
a844f451
NS
463 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
464 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
1da177e4
LT
465}
466
da353b0d
DC
467/*
468 * perag get/put wrappers for eventual ref counting
469 */
470static inline xfs_perag_t *
471xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
472{
473 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
474}
475
476static inline void
477xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
478{
479 /* nothing to see here, move along */
480}
481
03135cf7
DC
482/*
483 * Per-cpu superblock locking functions
484 */
485#ifdef HAVE_PERCPU_SB
486STATIC_INLINE void
487xfs_icsb_lock(xfs_mount_t *mp)
488{
489 mutex_lock(&mp->m_icsb_mutex);
490}
491
492STATIC_INLINE void
493xfs_icsb_unlock(xfs_mount_t *mp)
494{
495 mutex_unlock(&mp->m_icsb_mutex);
496}
497#else
498#define xfs_icsb_lock(mp)
499#define xfs_icsb_unlock(mp)
500#endif
501
1da177e4
LT
502/*
503 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
20f4ebf2 504 * xfs_growfs can specify a few fields which are more than int limit
1da177e4
LT
505 */
506typedef struct xfs_mod_sb {
507 xfs_sb_field_t msb_field; /* Field to modify, see below */
20f4ebf2 508 int64_t msb_delta; /* Change to make to specified field */
1da177e4
LT
509} xfs_mod_sb_t;
510
794ee1ba 511#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
1da177e4 512#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
1da177e4
LT
513
514extern xfs_mount_t *xfs_mount_init(void);
515extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
92821e2b 516extern int xfs_log_sbcount(xfs_mount_t *, uint);
745f6919 517extern void xfs_mount_free(xfs_mount_t *mp);
b267ce99 518extern int xfs_mountfs(xfs_mount_t *mp, int);
f538d4da 519extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
1da177e4 520
19f354d4 521extern int xfs_unmountfs(xfs_mount_t *);
1da177e4
LT
522extern int xfs_unmountfs_writesb(xfs_mount_t *);
523extern int xfs_unmount_flush(xfs_mount_t *, int);
20f4ebf2 524extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
8d280b98 525extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
20f4ebf2 526 int64_t, int);
1da177e4
LT
527extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
528 uint, int);
529extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
764d1f89 530extern int xfs_readsb(xfs_mount_t *, int);
1da177e4 531extern void xfs_freesb(xfs_mount_t *);
92821e2b 532extern int xfs_fs_writable(xfs_mount_t *);
1f9b3b64
LM
533extern int xfs_syncsub(xfs_mount_t *, int, int *);
534extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
b267ce99 535extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
2bdf7cd0
CH
536extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
537extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
4cc929ee 538extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
1da177e4 539
293688ec
CH
540extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *);
541extern void xfs_dmops_put(struct xfs_mount *);
b09cc771
CH
542extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *);
543extern void xfs_qmops_put(struct xfs_mount *);
293688ec
CH
544
545extern struct xfs_dmops xfs_dmcore_xfs;
1da177e4
LT
546
547extern int xfs_init(void);
548extern void xfs_cleanup(void);
549
550#endif /* __KERNEL__ */
551
552#endif /* __XFS_MOUNT_H__ */