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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_MOUNT_H__
19#define __XFS_MOUNT_H__
20
Linus Torvalds1da177e2005-04-16 15:20:36 -070021typedef 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;
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#ifndef __KERNEL__
46/*
47 * Moved here from xfs_ag.h to avoid reordering header files
48 */
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))
53#else
54struct cred;
55struct log;
56struct vfs;
57struct vnode;
58struct xfs_mount_args;
59struct xfs_ihash;
60struct xfs_chash;
61struct xfs_inode;
62struct xfs_perag;
63struct xfs_iocore;
64struct xfs_bmbt_irec;
65struct xfs_bmap_free;
66
Nathan Scotta844f452005-11-02 14:38:42 +110067extern struct vfsops xfs_vfsops;
68extern struct vnodeops xfs_vnodeops;
69
Linus Torvalds1da177e2005-04-16 15:20:36 -070070#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)
75
76
77/*
78 * Prototypes and functions for the Data Migration subsystem.
79 */
80
81typedef int (*xfs_send_data_t)(int, struct vnode *,
82 xfs_off_t, size_t, int, vrwlock_t *);
83typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
84typedef int (*xfs_send_destroy_t)(struct vnode *, dm_right_t);
85typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct vfs *,
86 struct vnode *,
87 dm_right_t, struct vnode *, dm_right_t,
88 char *, char *, mode_t, int, int);
89typedef void (*xfs_send_unmount_t)(struct vfs *, struct vnode *,
90 dm_right_t, mode_t, int, int);
91
92typedef 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;
98} xfs_dmops_t;
99
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)
112
113
114/*
115 * Prototypes and functions for the Quota Management subsystem.
116 */
117
118struct xfs_dquot;
119struct xfs_dqtrxops;
120struct xfs_quotainfo;
121
122typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
123typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
124typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
125typedef void (*xfs_qmdone_t)(struct xfs_mount *);
126typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
127typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
128typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
129typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
130typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000131 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 struct xfs_dquot **, struct xfs_dquot **);
133typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
134 struct xfs_dquot *, struct xfs_dquot *);
135typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
136typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
137 struct xfs_trans *, struct xfs_inode *,
138 struct xfs_dquot **, struct xfs_dquot *);
139typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
140 struct xfs_dquot *, struct xfs_dquot *, uint);
141
142typedef 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;
157} xfs_qmops_t;
158
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)
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000175#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)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177#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)
185
186
187/*
188 * Prototypes and functions for I/O core modularization.
189 */
190
191typedef int (*xfs_ioinit_t)(struct vfs *,
192 struct xfs_mount_args *, int);
193typedef 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 *);
198typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
199typedef int (*xfs_iomap_write_direct_t)(
Nathan Scottf403b7f2005-05-05 13:33:40 -0700200 void *, xfs_off_t, size_t, int,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 struct xfs_bmbt_irec *, int *, int);
202typedef int (*xfs_iomap_write_delay_t)(
Nathan Scottf403b7f2005-05-05 13:33:40 -0700203 void *, xfs_off_t, size_t, int,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 struct xfs_bmbt_irec *, int *);
205typedef int (*xfs_iomap_write_allocate_t)(
Nathan Scottf403b7f2005-05-05 13:33:40 -0700206 void *, xfs_off_t, size_t,
Nathan Scott24e17b52005-05-05 13:33:20 -0700207 struct xfs_bmbt_irec *, int *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208typedef int (*xfs_iomap_write_unwritten_t)(
Nathan Scottf403b7f2005-05-05 13:33:40 -0700209 void *, xfs_off_t, size_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210typedef uint (*xfs_lck_map_shared_t)(void *);
211typedef void (*xfs_lock_t)(void *, uint);
212typedef void (*xfs_lock_demote_t)(void *, uint);
213typedef int (*xfs_lock_nowait_t)(void *, uint);
214typedef void (*xfs_unlk_t)(void *, unsigned int);
215typedef xfs_fsize_t (*xfs_size_t)(void *);
216typedef xfs_fsize_t (*xfs_iodone_t)(struct vfs *);
217
218typedef 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;
233} xfs_ioops_t;
234
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)
Nathan Scott24e17b52005-05-05 13:33:20 -0700249#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
Nathan Scott24e17b52005-05-05 13:33:20 -0700251 ((io)->io_obj, offset, count, mval, nmap)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252#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)
269
270
271typedef struct xfs_mount {
272 bhv_desc_t m_bhv; /* vfs xfs behavior */
273 xfs_tid_t m_tid; /* next unused tid for fs */
274 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */
275 xfs_ail_entry_t m_ail; /* fs active log item list */
276 uint m_ail_gen; /* fs AIL generation count */
277 xfs_sb_t m_sb; /* copy of fs superblock */
278 lock_t m_sb_lock; /* sb counter mutex */
279 struct xfs_buf *m_sb_bp; /* buffer for superblock */
280 char *m_fsname; /* filesystem name */
281 int m_fsname_len; /* strlen of fs name */
Nathan Scottfc1f8c12005-11-02 11:44:33 +1100282 char *m_rtname; /* realtime device name */
283 char *m_logname; /* external log device name */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 int m_bsize; /* fs logical block size */
285 xfs_agnumber_t m_agfrotor; /* last ag where space found */
286 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
287 lock_t m_agirotor_lock;/* .. and lock protecting it */
288 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
289 uint m_ihsize; /* size of next field */
290 struct xfs_ihash *m_ihash; /* fs private inode hash table*/
291 struct xfs_inode *m_inodes; /* active inode list */
292 struct list_head m_del_inodes; /* inodes to reclaim */
293 mutex_t m_ilock; /* inode list mutex */
294 uint m_ireclaims; /* count of calls to reclaim*/
295 uint m_readio_log; /* min read size log bytes */
296 uint m_readio_blocks; /* min read size blocks */
297 uint m_writeio_log; /* min write size log bytes */
298 uint m_writeio_blocks; /* min write size blocks */
299 struct log *m_log; /* log specific stuff */
300 int m_logbufs; /* number of log buffers */
301 int m_logbsize; /* size of each log buffer */
302 uint m_rsumlevels; /* rt summary levels */
303 uint m_rsumsize; /* size of rt summary, bytes */
304 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
305 struct xfs_inode *m_rsumip; /* pointer to summary inode */
306 struct xfs_inode *m_rootip; /* pointer to root directory */
307 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
308 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
309 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
310 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
311#define m_dev m_ddev_targp->pbr_dev
312 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
313 __uint8_t m_blkbit_log; /* blocklog + NBBY */
314 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
315 __uint8_t m_agno_log; /* log #ag's */
316 __uint8_t m_agino_log; /* #bits for agino in inum */
317 __uint8_t m_nreadaheads; /* #readahead buffers */
318 __uint16_t m_inode_cluster_size;/* min inode buf size */
319 uint m_blockmask; /* sb_blocksize-1 */
320 uint m_blockwsize; /* sb_blocksize in words */
321 uint m_blockwmask; /* blockwsize-1 */
322 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
323 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
324 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
325 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
326 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
327 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
328 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
329 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
330 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
331 struct xfs_perag *m_perag; /* per-ag accounting info */
332 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
333 sema_t m_growlock; /* growfs mutex */
334 int m_fixedfsid[2]; /* unchanged for life of FS */
335 uint m_dmevmask; /* DMI events for this FS */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100336 __uint64_t m_flags; /* global mount flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 uint m_attroffset; /* inode attribute offset */
338 uint m_dir_node_ents; /* #entries in a dir danode */
339 uint m_attr_node_ents; /* #entries in attr danode */
340 int m_ialloc_inos; /* inodes in inode allocation */
341 int m_ialloc_blks; /* blocks in inode allocation */
342 int m_litino; /* size of inode union area */
343 int m_inoalign_mask;/* mask sb_inoalignmt if used */
344 uint m_qflags; /* quota status flags */
345 xfs_trans_reservations_t m_reservations;/* precomputed res values */
346 __uint64_t m_maxicount; /* maximum inode count */
347 __uint64_t m_maxioffset; /* maximum inode offset */
348 __uint64_t m_resblks; /* total reserved blocks */
349 __uint64_t m_resblks_avail;/* available reserved blocks */
350#if XFS_BIG_INUMS
351 xfs_ino_t m_inoadd; /* add value for ino64_offset */
352#endif
353 int m_dalign; /* stripe unit */
354 int m_swidth; /* stripe width */
355 int m_sinoalign; /* stripe unit inode alignmnt */
356 int m_attr_magicpct;/* 37% of the blocksize */
357 int m_dir_magicpct; /* 37% of the dir blocksize */
358 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
359 __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
360 field governed by m_ilock */
361 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
362 __uint8_t m_dirversion; /* 1 or 2 */
363 xfs_dirops_t m_dirops; /* table of dir funcs */
364 int m_dirblksize; /* directory block sz--bytes */
365 int m_dirblkfsbs; /* directory block sz--fsbs */
366 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
367 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
368 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
369 uint m_chsize; /* size of next field */
370 struct xfs_chash *m_chash; /* fs private inode per-cluster
371 * hash table */
372 struct xfs_dmops m_dm_ops; /* vector of DMI ops */
373 struct xfs_qmops m_qm_ops; /* vector of XQM ops */
374 struct xfs_ioops m_io_ops; /* vector of I/O ops */
375 atomic_t m_active_trans; /* number trans frozen */
376} xfs_mount_t;
377
378/*
379 * Flags for m_flags.
380 */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100381#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 must be synchronous except
383 for space allocations */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100384#define XFS_MOUNT_INO64 (1ULL << 1)
385 /* (1ULL << 2) -- currently unused */
386 /* (1ULL << 3) -- currently unused */
387#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 operations, typically for
389 disk errors in metadata */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100390#define XFS_MOUNT_NOATIME (1ULL << 5) /* don't modify inode access
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 times on reads */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100392#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 user */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100394#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 allocations */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100396#define XFS_MOUNT_COMPAT_ATTR (1ULL << 8) /* do not use attr2 format */
397 /* (1ULL << 9) -- currently unused */
398#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
399#define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
400#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
401#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 /* osyncisdsync is now default*/
Nathan Scotte718eeb2005-11-02 15:09:22 +1100403#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 * 32 bits in size */
Nathan Scottc11e2c32005-11-02 15:11:45 +1100405 /* (1ULL << 15) -- currently unused */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100406#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
407#define XFS_MOUNT_BARRIER (1ULL << 17)
408#define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/
409#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 * allocation */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100411#define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */
412#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
413#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
David Chinnere8c8b3a2005-11-02 10:33:05 +1100414 * I/O size in stat() */
415
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
417/*
418 * Default minimum read and write sizes.
419 */
420#define XFS_READIO_LOG_LARGE 16
421#define XFS_WRITEIO_LOG_LARGE 16
422
423/*
Nathan Scott1f443ad2005-05-05 13:28:29 -0700424 * Max and min values for mount-option defined I/O
425 * preallocation sizes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 */
Nathan Scott1f443ad2005-05-05 13:28:29 -0700427#define XFS_MAX_IO_LOG 30 /* 1G */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428#define XFS_MIN_IO_LOG PAGE_SHIFT
429
430/*
431 * Synchronous read and write sizes. This should be
432 * better for NFSv2 wsync filesystems.
433 */
434#define XFS_WSYNC_READIO_LOG 15 /* 32K */
435#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
436
David Chinnere8c8b3a2005-11-02 10:33:05 +1100437/*
438 * Allow large block sizes to be reported to userspace programs if the
439 * "largeio" mount option is used.
440 *
441 * If compatibility mode is specified, simply return the basic unit of caching
442 * so that we don't get inefficient read/modify/write I/O from user apps.
443 * Otherwise....
444 *
445 * If the underlying volume is a stripe, then return the stripe width in bytes
446 * as the recommended I/O size. It is not a stripe and we've set a default
447 * buffered I/O size, return that, otherwise return the compat default.
448 */
449static inline unsigned long
450xfs_preferred_iosize(xfs_mount_t *mp)
451{
452 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
453 return PAGE_CACHE_SIZE;
454 return (mp->m_swidth ?
455 (mp->m_swidth << mp->m_sb.sb_blocklog) :
456 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
457 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
458 PAGE_CACHE_SIZE));
459}
460
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
462
463#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
464#define xfs_force_shutdown(m,f) \
465 VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__)
466
467/*
468 * Flags sent to xfs_force_shutdown.
469 */
470#define XFS_METADATA_IO_ERROR 0x1
471#define XFS_LOG_IO_ERROR 0x2
472#define XFS_FORCE_UMOUNT 0x4
473#define XFS_CORRUPT_INCORE 0x8 /* Corrupt in-memory data structures */
474#define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */
475
476/*
477 * xflags for xfs_syncsub
478 */
479#define XFS_XSYNC_RELOC 0x01
480
481/*
482 * Flags for xfs_mountfs
483 */
484#define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
485#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
486#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
487 /* log recovery */
488#define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
489
490/*
491 * Macros for getting from mount to vfs and back.
492 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493#define XFS_MTOVFS(mp) xfs_mtovfs(mp)
Nathan Scotta844f452005-11-02 14:38:42 +1100494static inline struct vfs *xfs_mtovfs(xfs_mount_t *mp)
495{
496 return bhvtovfs(&mp->m_bhv);
497}
498
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499#define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
Nathan Scotta844f452005-11-02 14:38:42 +1100500static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp)
501{
502 return (xfs_mount_t *)BHV_PDATA(bdp);
503}
504
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505#define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
Nathan Scotta844f452005-11-02 14:38:42 +1100506static inline xfs_mount_t *xfs_vfstom(vfs_t *vfs)
507{
508 return XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops));
509}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
Nathan Scotta844f452005-11-02 14:38:42 +1100512static inline xfs_agnumber_t
513xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514{
Nathan Scotta844f452005-11-02 14:38:42 +1100515 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
516 do_div(ld, mp->m_sb.sb_agblocks);
517 return (xfs_agnumber_t) ld;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518}
519
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
Nathan Scotta844f452005-11-02 14:38:42 +1100521static inline xfs_agblock_t
522xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523{
Nathan Scotta844f452005-11-02 14:38:42 +1100524 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
525 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526}
527
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528/*
529 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
530 */
531typedef struct xfs_mod_sb {
532 xfs_sb_field_t msb_field; /* Field to modify, see below */
533 int msb_delta; /* Change to make to specified field */
534} xfs_mod_sb_t;
535
536#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock), PINOD)
537#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
538#define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
539#define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
540
541extern xfs_mount_t *xfs_mount_init(void);
542extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
543extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
544extern int xfs_mountfs(struct vfs *, xfs_mount_t *mp, int);
Christoph Hellwigf538d4d2005-11-02 10:26:59 +1100545extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546
547extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *);
549extern int xfs_unmountfs_writesb(xfs_mount_t *);
550extern int xfs_unmount_flush(xfs_mount_t *, int);
551extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
552extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
553 uint, int);
554extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
555extern int xfs_readsb(xfs_mount_t *mp);
556extern void xfs_freesb(xfs_mount_t *);
557extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
558extern int xfs_syncsub(xfs_mount_t *, int, int, int *);
Nathan Scottee348072005-11-02 10:32:38 +1100559extern int xfs_sync_inodes(xfs_mount_t *, int, int, int *);
Nathan Scottc11e2c32005-11-02 15:11:45 +1100560extern xfs_agnumber_t xfs_initialize_perag(struct vfs *, xfs_mount_t *,
561 xfs_agnumber_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);
563
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564extern struct xfs_dmops xfs_dmcore_stub;
565extern struct xfs_qmops xfs_qmcore_stub;
566extern struct xfs_ioops xfs_iocore_xfs;
567
568extern int xfs_init(void);
569extern void xfs_cleanup(void);
570
571#endif /* __KERNEL__ */
572
573#endif /* __XFS_MOUNT_H__ */