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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__
Barry Naujok847fff52008-10-30 17:05:38 +110046
Eric Sandeen9d87c312009-01-14 23:22:07 -060047#define xfs_daddr_to_agno(mp,d) \
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
Eric Sandeen9d87c312009-01-14 23:22:07 -060049#define xfs_daddr_to_agbno(mp,d) \
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
Barry Naujok847fff52008-10-30 17:05:38 +110051
52#else /* __KERNEL__ */
53
Christoph Hellwig6d73cf12008-12-09 04:47:32 -050054#include "xfs_sync.h"
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056struct log;
Linus Torvalds1da177e2005-04-16 15:20:36 -070057struct xfs_mount_args;
Linus Torvalds1da177e2005-04-16 15:20:36 -070058struct xfs_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059struct xfs_bmbt_irec;
60struct xfs_bmap_free;
Olaf Weber3e57ecf2006-06-09 14:48:12 +100061struct xfs_extdelta;
62struct xfs_swapext;
David Chinner2a82b8b2007-07-11 11:09:12 +100063struct xfs_mru_cache;
Barry Naujok5163f952008-05-21 16:41:01 +100064struct xfs_nameops;
David Chinner82fa9012008-10-30 17:38:26 +110065struct xfs_ail;
Christoph Hellwig7d095252009-06-08 15:33:32 +020066struct xfs_quotainfo;
67
David Chinner8d280b92006-03-14 13:13:09 +110068#ifdef HAVE_PERCPU_SB
69
70/*
71 * Valid per-cpu incore superblock counters. Note that if you add new counters,
72 * you may need to define new counter disabled bit field descriptors as there
73 * are more possible fields in the superblock that can fit in a bitfield on a
74 * 32 bit platform. The XFS_SBS_* values for the current current counters just
75 * fit.
76 */
77typedef struct xfs_icsb_cnts {
78 uint64_t icsb_fdblocks;
79 uint64_t icsb_ifree;
80 uint64_t icsb_icount;
David Chinner01e1b692006-03-14 13:29:16 +110081 unsigned long icsb_flags;
David Chinner8d280b92006-03-14 13:13:09 +110082} xfs_icsb_cnts_t;
83
David Chinner01e1b692006-03-14 13:29:16 +110084#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
85
David Chinner8d280b92006-03-14 13:13:09 +110086#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
87
88extern int xfs_icsb_init_counters(struct xfs_mount *);
Lachlan McIlroy5478eea2007-02-10 18:36:29 +110089extern void xfs_icsb_reinit_counters(struct xfs_mount *);
Christoph Hellwigc962fb72008-05-20 15:10:52 +100090extern void xfs_icsb_destroy_counters(struct xfs_mount *);
Christoph Hellwigd4d90b52008-04-22 17:34:37 +100091extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
92extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
Christoph Hellwig96540c72010-09-30 02:25:55 +000093extern int xfs_icsb_modify_counters(struct xfs_mount *, xfs_sb_field_t,
94 int64_t, int);
David Chinner8d280b92006-03-14 13:13:09 +110095
96#else
Christoph Hellwigc962fb72008-05-20 15:10:52 +100097#define xfs_icsb_init_counters(mp) (0)
98#define xfs_icsb_destroy_counters(mp) do { } while (0)
99#define xfs_icsb_reinit_counters(mp) do { } while (0)
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000100#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
Eric Sandeen71550542008-04-29 12:53:00 +1000101#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
Christoph Hellwig96540c72010-09-30 02:25:55 +0000102#define xfs_icsb_modify_counters(mp, field, delta, rsvd) \
103 xfs_mod_incore_sb(mp, field, delta, rsvd)
David Chinner8d280b92006-03-14 13:13:09 +1100104#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
Dave Chinner055388a2011-01-04 11:35:03 +1100106/* dynamic preallocation free space thresholds, 5% down to 1% */
107enum {
108 XFS_LOWSP_1_PCNT = 0,
109 XFS_LOWSP_2_PCNT,
110 XFS_LOWSP_3_PCNT,
111 XFS_LOWSP_4_PCNT,
112 XFS_LOWSP_5_PCNT,
113 XFS_LOWSP_MAX,
114};
115
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116typedef struct xfs_mount {
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000117 struct super_block *m_super;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 xfs_tid_t m_tid; /* next unused tid for fs */
David Chinner82fa9012008-10-30 17:38:26 +1100119 struct xfs_ail *m_ail; /* fs active log item list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 xfs_sb_t m_sb; /* copy of fs superblock */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000121 spinlock_t m_sb_lock; /* sb counter lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 struct xfs_buf *m_sb_bp; /* buffer for superblock */
123 char *m_fsname; /* filesystem name */
124 int m_fsname_len; /* strlen of fs name */
Nathan Scottfc1f8c12005-11-02 11:44:33 +1100125 char *m_rtname; /* realtime device name */
126 char *m_logname; /* external log device name */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 int m_bsize; /* fs logical block size */
128 xfs_agnumber_t m_agfrotor; /* last ag where space found */
129 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
Eric Sandeen36e41ee2007-10-11 17:43:43 +1000130 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 uint m_readio_log; /* min read size log bytes */
133 uint m_readio_blocks; /* min read size blocks */
134 uint m_writeio_log; /* min write size log bytes */
135 uint m_writeio_blocks; /* min write size blocks */
136 struct log *m_log; /* log specific stuff */
137 int m_logbufs; /* number of log buffers */
138 int m_logbsize; /* size of each log buffer */
139 uint m_rsumlevels; /* rt summary levels */
140 uint m_rsumsize; /* size of rt summary, bytes */
141 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
142 struct xfs_inode *m_rsumip; /* pointer to summary inode */
143 struct xfs_inode *m_rootip; /* pointer to root directory */
144 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
145 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
146 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
147 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 __uint8_t m_blkbit_log; /* blocklog + NBBY */
149 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
150 __uint8_t m_agno_log; /* log #ag's */
151 __uint8_t m_agino_log; /* #bits for agino in inum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 __uint16_t m_inode_cluster_size;/* min inode buf size */
153 uint m_blockmask; /* sb_blocksize-1 */
154 uint m_blockwsize; /* sb_blocksize in words */
155 uint m_blockwmask; /* blockwsize-1 */
Christoph Hellwig60197e82008-10-30 17:11:19 +1100156 uint m_alloc_mxr[2]; /* max alloc btree records */
157 uint m_alloc_mnr[2]; /* min alloc btree records */
158 uint m_bmap_dmxr[2]; /* max bmap btree records */
159 uint m_bmap_dmnr[2]; /* min bmap btree records */
160 uint m_inobt_mxr[2]; /* max inobt btree records */
161 uint m_inobt_mnr[2]; /* min inobt btree records */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
163 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100164 uint m_in_maxlevels; /* max inobt btree levels. */
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000165 struct radix_tree_root m_perag_tree; /* per-ag accounting info */
166 spinlock_t m_perag_lock; /* lock for m_perag_tree */
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000167 struct mutex m_growlock; /* growfs mutex */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 int m_fixedfsid[2]; /* unchanged for life of FS */
169 uint m_dmevmask; /* DMI events for this FS */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100170 __uint64_t m_flags; /* global mount flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 uint m_dir_node_ents; /* #entries in a dir danode */
172 uint m_attr_node_ents; /* #entries in attr danode */
173 int m_ialloc_inos; /* inodes in inode allocation */
174 int m_ialloc_blks; /* blocks in inode allocation */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 int m_inoalign_mask;/* mask sb_inoalignmt if used */
176 uint m_qflags; /* quota status flags */
177 xfs_trans_reservations_t m_reservations;/* precomputed res values */
178 __uint64_t m_maxicount; /* maximum inode count */
179 __uint64_t m_maxioffset; /* maximum inode offset */
180 __uint64_t m_resblks; /* total reserved blocks */
181 __uint64_t m_resblks_avail;/* available reserved blocks */
Dave Chinnercbe132a2010-01-26 15:08:49 +1100182 __uint64_t m_resblks_save; /* reserved blks @ remount,ro */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 int m_dalign; /* stripe unit */
184 int m_swidth; /* stripe width */
Nathan Scottc41564b2006-03-29 08:55:14 +1000185 int m_sinoalign; /* stripe unit inode alignment */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 int m_attr_magicpct;/* 37% of the blocksize */
187 int m_dir_magicpct; /* 37% of the dir blocksize */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
Barry Naujok5163f952008-05-21 16:41:01 +1000189 const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 int m_dirblksize; /* directory block sz--bytes */
191 int m_dirblkfsbs; /* directory block sz--fsbs */
192 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
193 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
194 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
195 uint m_chsize; /* size of next field */
196 struct xfs_chash *m_chash; /* fs private inode per-cluster
197 * hash table */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 atomic_t m_active_trans; /* number trans frozen */
David Chinner8d280b92006-03-14 13:13:09 +1100199#ifdef HAVE_PERCPU_SB
Tejun Heo003cb602010-02-02 14:39:01 +0900200 xfs_icsb_cnts_t __percpu *m_sb_cnts; /* per-cpu superblock counters */
David Chinner8d280b92006-03-14 13:13:09 +1100201 unsigned long m_icsb_counters; /* disabled per-cpu counters */
David Chinnere8234a62006-03-14 13:23:52 +1100202 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
David Chinner20b64282007-02-10 18:35:09 +1100203 struct mutex m_icsb_mutex; /* balancer sync lock */
David Chinner8d280b92006-03-14 13:13:09 +1100204#endif
David Chinner2a82b8b2007-07-11 11:09:12 +1000205 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
Dave Chinnerc6d09b62011-04-08 12:45:07 +1000206 struct delayed_work m_sync_work; /* background sync work */
Dave Chinnera7b339f2011-04-08 12:45:07 +1000207 struct delayed_work m_reclaim_work; /* background inode reclaim */
Dave Chinner89e4cb52011-04-08 12:45:07 +1000208 struct work_struct m_flush_work; /* background inode flush */
Christoph Hellwig7884bc82009-01-19 02:04:07 +0100209 __int64_t m_update_flags; /* sb flags we need to update
210 on the next remount,rw */
Dave Chinner70e60ce2010-07-20 08:07:02 +1000211 struct shrinker m_inode_shrink; /* inode reclaim shrinker */
Dave Chinner055388a2011-01-04 11:35:03 +1100212 int64_t m_low_space[XFS_LOWSP_MAX];
213 /* low free space thresholds */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214} xfs_mount_t;
215
216/*
217 * Flags for m_flags.
218 */
David Chinner92821e22007-05-24 15:26:31 +1000219#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 must be synchronous except
221 for space allocations */
David Chinner92821e22007-05-24 15:26:31 +1000222#define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
Nathan Scotte718eeb42005-11-02 15:09:22 +1100223#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 operations, typically for
225 disk errors in metadata */
Christoph Hellwige84661a2011-05-20 13:45:32 +0000226#define XFS_MOUNT_DISCARD (1ULL << 5) /* discard unused blocks */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100227#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 user */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100229#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 allocations */
Nathan Scott13059ff2006-01-11 15:32:01 +1100231#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000232#define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100233#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100234#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100235#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 * 32 bits in size */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000237#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100238#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
239#define XFS_MOUNT_BARRIER (1ULL << 17)
Josef Jeff Sipek1bd960e2008-02-29 13:58:40 +1100240#define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
Nathan Scotte718eeb42005-11-02 15:09:22 +1100241#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 * allocation */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000243#define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100244#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
245#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
David Chinnere8c8b3a2005-11-02 10:33:05 +1100246 * I/O size in stat() */
David Chinner2a82b8b2007-07-11 11:09:12 +1000247#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
248 allocator */
Tim Shimmin7c12f292008-04-30 18:15:28 +1000249#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
David Chinnere8c8b3a2005-11-02 10:33:05 +1100250
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
252/*
253 * Default minimum read and write sizes.
254 */
255#define XFS_READIO_LOG_LARGE 16
256#define XFS_WRITEIO_LOG_LARGE 16
257
258/*
Nathan Scott1f443ad2005-05-05 13:28:29 -0700259 * Max and min values for mount-option defined I/O
260 * preallocation sizes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 */
Nathan Scott1f443ad2005-05-05 13:28:29 -0700262#define XFS_MAX_IO_LOG 30 /* 1G */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263#define XFS_MIN_IO_LOG PAGE_SHIFT
264
265/*
266 * Synchronous read and write sizes. This should be
267 * better for NFSv2 wsync filesystems.
268 */
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200269#define XFS_WSYNC_READIO_LOG 15 /* 32k */
270#define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
David Chinnere8c8b3a2005-11-02 10:33:05 +1100272/*
273 * Allow large block sizes to be reported to userspace programs if the
Barry Naujok556b8b12008-04-10 12:22:07 +1000274 * "largeio" mount option is used.
David Chinnere8c8b3a2005-11-02 10:33:05 +1100275 *
276 * If compatibility mode is specified, simply return the basic unit of caching
277 * so that we don't get inefficient read/modify/write I/O from user apps.
278 * Otherwise....
279 *
280 * If the underlying volume is a stripe, then return the stripe width in bytes
281 * as the recommended I/O size. It is not a stripe and we've set a default
282 * buffered I/O size, return that, otherwise return the compat default.
283 */
284static inline unsigned long
285xfs_preferred_iosize(xfs_mount_t *mp)
286{
287 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
288 return PAGE_CACHE_SIZE;
289 return (mp->m_swidth ?
290 (mp->m_swidth << mp->m_sb.sb_blocklog) :
291 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
292 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
293 PAGE_CACHE_SIZE));
294}
295
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
297
David Chinner92821e22007-05-24 15:26:31 +1000298#define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
299 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
Christoph Hellwig745f6912007-08-30 17:20:39 +1000301void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
302 int lnnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303#define xfs_force_shutdown(m,f) \
Christoph Hellwig745f6912007-08-30 17:20:39 +1000304 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305
Christoph Hellwig2b5decd2008-11-28 14:23:36 +1100306#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
307#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
308#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
309#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
310#define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
311#define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
312
313#define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen)
314#define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l))
315
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 * Flags for xfs_mountfs
318 */
Nathan Scott764d1f82006-03-31 13:04:17 +1000319#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Nathan Scotta844f452005-11-02 14:38:42 +1100321static inline xfs_agnumber_t
322xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323{
Nathan Scotta844f452005-11-02 14:38:42 +1100324 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
325 do_div(ld, mp->m_sb.sb_agblocks);
326 return (xfs_agnumber_t) ld;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327}
328
Nathan Scotta844f452005-11-02 14:38:42 +1100329static inline xfs_agblock_t
330xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331{
Nathan Scotta844f452005-11-02 14:38:42 +1100332 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
333 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334}
335
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336/*
Dave Chinneraed3bb92010-01-11 11:47:45 +0000337 * perag get/put wrappers for ref counting
David Chinnerda353b02007-08-28 14:00:13 +1000338 */
Dave Chinner0fa800f2010-01-11 11:47:46 +0000339struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno);
Dave Chinner65d0f202010-09-24 18:40:15 +1000340struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *mp, xfs_agnumber_t agno,
341 int tag);
Dave Chinner0fa800f2010-01-11 11:47:46 +0000342void xfs_perag_put(struct xfs_perag *pag);
David Chinnerda353b02007-08-28 14:00:13 +1000343
344/*
David Chinner03135cf2007-02-10 18:35:15 +1100345 * Per-cpu superblock locking functions
346 */
347#ifdef HAVE_PERCPU_SB
Christoph Hellwigb8f82a42009-11-14 16:17:22 +0000348static inline void
David Chinner03135cf2007-02-10 18:35:15 +1100349xfs_icsb_lock(xfs_mount_t *mp)
350{
351 mutex_lock(&mp->m_icsb_mutex);
352}
353
Christoph Hellwigb8f82a42009-11-14 16:17:22 +0000354static inline void
David Chinner03135cf2007-02-10 18:35:15 +1100355xfs_icsb_unlock(xfs_mount_t *mp)
356{
357 mutex_unlock(&mp->m_icsb_mutex);
358}
359#else
360#define xfs_icsb_lock(mp)
361#define xfs_icsb_unlock(mp)
362#endif
363
364/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
David Chinner20f4ebf2007-02-10 18:36:10 +1100366 * xfs_growfs can specify a few fields which are more than int limit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 */
368typedef struct xfs_mod_sb {
369 xfs_sb_field_t msb_field; /* Field to modify, see below */
David Chinner20f4ebf2007-02-10 18:36:10 +1100370 int64_t msb_delta; /* Change to make to specified field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371} xfs_mod_sb_t;
372
Chandra Seetharamanadab0f62011-06-29 22:10:14 +0000373extern int xfs_log_sbcount(xfs_mount_t *);
Eric Sandeend5db0f92010-02-05 22:59:53 +0000374extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
Christoph Hellwig42490232008-08-13 16:49:32 +1000375extern int xfs_mountfs(xfs_mount_t *mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
Christoph Hellwig41b5c2e2008-08-13 16:49:57 +1000377extern void xfs_unmountfs(xfs_mount_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378extern int xfs_unmountfs_writesb(xfs_mount_t *);
David Chinner20f4ebf2007-02-10 18:36:10 +1100379extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
381 uint, int);
Christoph Hellwig7884bc82009-01-19 02:04:07 +0100382extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
Nathan Scott764d1f82006-03-31 13:04:17 +1000384extern int xfs_readsb(xfs_mount_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385extern void xfs_freesb(xfs_mount_t *);
David Chinner92821e22007-05-24 15:26:31 +1000386extern int xfs_fs_writable(xfs_mount_t *);
Nathan Scott4cc929e2007-05-14 18:24:02 +1000387extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
Christoph Hellwigd7658d42010-02-17 19:36:13 +0000389extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
390
Dave Chinner055388a2011-01-04 11:35:03 +1100391extern void xfs_set_low_space_thresholds(struct xfs_mount *);
392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393#endif /* __KERNEL__ */
394
Barry Naujok847fff52008-10-30 17:05:38 +1100395extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
Dave Chinner1c1c6eb2010-01-11 11:47:44 +0000396extern int xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t,
397 xfs_agnumber_t *);
Barry Naujok847fff52008-10-30 17:05:38 +1100398extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
399extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
400
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401#endif /* __XFS_MOUNT_H__ */