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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 cred;
57struct log;
Linus Torvalds1da177e2005-04-16 15:20:36 -070058struct xfs_mount_args;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059struct xfs_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -070060struct xfs_bmbt_irec;
61struct xfs_bmap_free;
Olaf Weber3e57ecf2006-06-09 14:48:12 +100062struct xfs_extdelta;
63struct xfs_swapext;
David Chinner2a82b8b2007-07-11 11:09:12 +100064struct xfs_mru_cache;
Barry Naujok5163f952008-05-21 16:41:01 +100065struct xfs_nameops;
David Chinner82fa9012008-10-30 17:38:26 +110066struct xfs_ail;
Christoph Hellwig7d095252009-06-08 15:33:32 +020067struct xfs_quotainfo;
68
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Linus Torvalds1da177e2005-04-16 15:20:36 -070070/*
71 * Prototypes and functions for the Data Migration subsystem.
72 */
73
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110074typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
Christoph Hellwig126468b2008-03-06 13:44:57 +110075 xfs_off_t, size_t, int, int *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070076typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110077typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
Christoph Hellwigb267ce92007-08-30 17:21:30 +100078typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110079 struct xfs_inode *, dm_right_t,
80 struct xfs_inode *, dm_right_t,
Barry Naujok556b8b12008-04-10 12:22:07 +100081 const char *, const char *, mode_t, int, int);
Christoph Hellwig293688e2007-08-29 11:59:36 +100082typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
83 char *, char *);
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110084typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 dm_right_t, mode_t, int, int);
86
87typedef struct xfs_dmops {
88 xfs_send_data_t xfs_send_data;
89 xfs_send_mmap_t xfs_send_mmap;
90 xfs_send_destroy_t xfs_send_destroy;
91 xfs_send_namesp_t xfs_send_namesp;
Christoph Hellwig293688e2007-08-29 11:59:36 +100092 xfs_send_mount_t xfs_send_mount;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 xfs_send_unmount_t xfs_send_unmount;
94} xfs_dmops_t;
95
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110096#define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
97 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098#define XFS_SEND_MMAP(mp, vma,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100099 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
Christoph Hellwigbc4ac742008-03-06 13:45:58 +1100100#define XFS_SEND_DESTROY(mp, ip,right) \
101 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +1000103 (*(mp)->m_dm_ops->xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000104#define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
105 (*(mp)->m_dm_ops->xfs_send_namesp)(DM_EVENT_PREUNMOUNT,mp,b1,r1,b2,r2,n1,n2,mode,rval,fl)
Christoph Hellwig293688e2007-08-29 11:59:36 +1000106#define XFS_SEND_MOUNT(mp,right,path,name) \
107 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
Christoph Hellwigbc4ac742008-03-06 13:45:58 +1100108#define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
109 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
111
David Chinner8d280b92006-03-14 13:13:09 +1100112#ifdef HAVE_PERCPU_SB
113
114/*
115 * Valid per-cpu incore superblock counters. Note that if you add new counters,
116 * you may need to define new counter disabled bit field descriptors as there
117 * are more possible fields in the superblock that can fit in a bitfield on a
118 * 32 bit platform. The XFS_SBS_* values for the current current counters just
119 * fit.
120 */
121typedef struct xfs_icsb_cnts {
122 uint64_t icsb_fdblocks;
123 uint64_t icsb_ifree;
124 uint64_t icsb_icount;
David Chinner01e1b692006-03-14 13:29:16 +1100125 unsigned long icsb_flags;
David Chinner8d280b92006-03-14 13:13:09 +1100126} xfs_icsb_cnts_t;
127
David Chinner01e1b692006-03-14 13:29:16 +1100128#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
129
David Chinner8d280b92006-03-14 13:13:09 +1100130#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
131
132extern int xfs_icsb_init_counters(struct xfs_mount *);
Lachlan McIlroy5478eea2007-02-10 18:36:29 +1100133extern void xfs_icsb_reinit_counters(struct xfs_mount *);
Christoph Hellwigc962fb72008-05-20 15:10:52 +1000134extern void xfs_icsb_destroy_counters(struct xfs_mount *);
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000135extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
136extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
David Chinner8d280b92006-03-14 13:13:09 +1100137
138#else
Christoph Hellwigc962fb72008-05-20 15:10:52 +1000139#define xfs_icsb_init_counters(mp) (0)
140#define xfs_icsb_destroy_counters(mp) do { } while (0)
141#define xfs_icsb_reinit_counters(mp) do { } while (0)
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000142#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
Eric Sandeen71550542008-04-29 12:53:00 +1000143#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
David Chinner8d280b92006-03-14 13:13:09 +1100144#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146typedef struct xfs_mount {
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000147 struct super_block *m_super;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 xfs_tid_t m_tid; /* next unused tid for fs */
David Chinner82fa9012008-10-30 17:38:26 +1100149 struct xfs_ail *m_ail; /* fs active log item list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 xfs_sb_t m_sb; /* copy of fs superblock */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000151 spinlock_t m_sb_lock; /* sb counter lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 struct xfs_buf *m_sb_bp; /* buffer for superblock */
153 char *m_fsname; /* filesystem name */
154 int m_fsname_len; /* strlen of fs name */
Nathan Scottfc1f8c12005-11-02 11:44:33 +1100155 char *m_rtname; /* realtime device name */
156 char *m_logname; /* external log device name */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 int m_bsize; /* fs logical block size */
158 xfs_agnumber_t m_agfrotor; /* last ag where space found */
159 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
Eric Sandeen36e41ee2007-10-11 17:43:43 +1000160 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 uint m_readio_log; /* min read size log bytes */
163 uint m_readio_blocks; /* min read size blocks */
164 uint m_writeio_log; /* min write size log bytes */
165 uint m_writeio_blocks; /* min write size blocks */
166 struct log *m_log; /* log specific stuff */
167 int m_logbufs; /* number of log buffers */
168 int m_logbsize; /* size of each log buffer */
169 uint m_rsumlevels; /* rt summary levels */
170 uint m_rsumsize; /* size of rt summary, bytes */
171 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
172 struct xfs_inode *m_rsumip; /* pointer to summary inode */
173 struct xfs_inode *m_rootip; /* pointer to root directory */
174 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
175 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
176 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
177 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 __uint8_t m_blkbit_log; /* blocklog + NBBY */
179 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
180 __uint8_t m_agno_log; /* log #ag's */
181 __uint8_t m_agino_log; /* #bits for agino in inum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 __uint16_t m_inode_cluster_size;/* min inode buf size */
183 uint m_blockmask; /* sb_blocksize-1 */
184 uint m_blockwsize; /* sb_blocksize in words */
185 uint m_blockwmask; /* blockwsize-1 */
Christoph Hellwig60197e82008-10-30 17:11:19 +1100186 uint m_alloc_mxr[2]; /* max alloc btree records */
187 uint m_alloc_mnr[2]; /* min alloc btree records */
188 uint m_bmap_dmxr[2]; /* max bmap btree records */
189 uint m_bmap_dmnr[2]; /* min bmap btree records */
190 uint m_inobt_mxr[2]; /* max inobt btree records */
191 uint m_inobt_mnr[2]; /* min inobt btree records */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
193 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100194 uint m_in_maxlevels; /* max inobt btree levels. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 struct xfs_perag *m_perag; /* per-ag accounting info */
196 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000197 struct mutex m_growlock; /* growfs mutex */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 int m_fixedfsid[2]; /* unchanged for life of FS */
199 uint m_dmevmask; /* DMI events for this FS */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100200 __uint64_t m_flags; /* global mount flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 uint m_dir_node_ents; /* #entries in a dir danode */
202 uint m_attr_node_ents; /* #entries in attr danode */
203 int m_ialloc_inos; /* inodes in inode allocation */
204 int m_ialloc_blks; /* blocks in inode allocation */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 int m_inoalign_mask;/* mask sb_inoalignmt if used */
206 uint m_qflags; /* quota status flags */
207 xfs_trans_reservations_t m_reservations;/* precomputed res values */
208 __uint64_t m_maxicount; /* maximum inode count */
209 __uint64_t m_maxioffset; /* maximum inode offset */
210 __uint64_t m_resblks; /* total reserved blocks */
211 __uint64_t m_resblks_avail;/* available reserved blocks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 int m_dalign; /* stripe unit */
213 int m_swidth; /* stripe width */
Nathan Scottc41564b2006-03-29 08:55:14 +1000214 int m_sinoalign; /* stripe unit inode alignment */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 int m_attr_magicpct;/* 37% of the blocksize */
216 int m_dir_magicpct; /* 37% of the dir blocksize */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
Barry Naujok5163f952008-05-21 16:41:01 +1000218 const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 int m_dirblksize; /* directory block sz--bytes */
220 int m_dirblkfsbs; /* directory block sz--fsbs */
221 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
222 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
223 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
224 uint m_chsize; /* size of next field */
225 struct xfs_chash *m_chash; /* fs private inode per-cluster
226 * hash table */
Christoph Hellwig293688e2007-08-29 11:59:36 +1000227 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000228 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 atomic_t m_active_trans; /* number trans frozen */
David Chinner8d280b92006-03-14 13:13:09 +1100230#ifdef HAVE_PERCPU_SB
231 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
232 unsigned long m_icsb_counters; /* disabled per-cpu counters */
David Chinnere8234a62006-03-14 13:23:52 +1100233 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
David Chinner20b64282007-02-10 18:35:09 +1100234 struct mutex m_icsb_mutex; /* balancer sync lock */
David Chinner8d280b92006-03-14 13:13:09 +1100235#endif
David Chinner2a82b8b2007-07-11 11:09:12 +1000236 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
Christoph Hellwig74394492007-08-30 17:21:22 +1000237 struct task_struct *m_sync_task; /* generalised sync thread */
Dave Chinnera8d770d2009-04-06 18:44:54 +0200238 xfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
Christoph Hellwig74394492007-08-30 17:21:22 +1000239 struct list_head m_sync_list; /* sync thread work item list */
240 spinlock_t m_sync_lock; /* work item list lock */
241 int m_sync_seq; /* sync thread generation no. */
242 wait_queue_head_t m_wait_single_sync_task;
Christoph Hellwig7884bc82009-01-19 02:04:07 +0100243 __int64_t m_update_flags; /* sb flags we need to update
244 on the next remount,rw */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245} xfs_mount_t;
246
247/*
248 * Flags for m_flags.
249 */
David Chinner92821e22007-05-24 15:26:31 +1000250#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 must be synchronous except
252 for space allocations */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000253#define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
David Chinner92821e22007-05-24 15:26:31 +1000254#define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
Nathan Scotte718eeb2005-11-02 15:09:22 +1100255#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 operations, typically for
257 disk errors in metadata */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100258#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 user */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100260#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 allocations */
Nathan Scott13059ff2006-01-11 15:32:01 +1100262#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000263#define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100264#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100265#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
266#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 /* osyncisdsync is now default*/
Nathan Scotte718eeb2005-11-02 15:09:22 +1100268#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 * 32 bits in size */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000270#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100271#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
272#define XFS_MOUNT_BARRIER (1ULL << 17)
Josef Jeff Sipek1bd960e2008-02-29 13:58:40 +1100273#define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
Nathan Scotte718eeb2005-11-02 15:09:22 +1100274#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 * allocation */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000276#define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
Nathan Scotte718eeb2005-11-02 15:09:22 +1100277#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
278#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
David Chinnere8c8b3a2005-11-02 10:33:05 +1100279 * I/O size in stat() */
David Chinner8d280b92006-03-14 13:13:09 +1100280#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
281 counters */
David Chinner2a82b8b2007-07-11 11:09:12 +1000282#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
283 allocator */
Tim Shimmin7c12f292008-04-30 18:15:28 +1000284#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
David Chinnere8c8b3a2005-11-02 10:33:05 +1100285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286
287/*
288 * Default minimum read and write sizes.
289 */
290#define XFS_READIO_LOG_LARGE 16
291#define XFS_WRITEIO_LOG_LARGE 16
292
293/*
Nathan Scott1f443ad2005-05-05 13:28:29 -0700294 * Max and min values for mount-option defined I/O
295 * preallocation sizes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 */
Nathan Scott1f443ad2005-05-05 13:28:29 -0700297#define XFS_MAX_IO_LOG 30 /* 1G */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298#define XFS_MIN_IO_LOG PAGE_SHIFT
299
300/*
301 * Synchronous read and write sizes. This should be
302 * better for NFSv2 wsync filesystems.
303 */
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200304#define XFS_WSYNC_READIO_LOG 15 /* 32k */
305#define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
David Chinnere8c8b3a2005-11-02 10:33:05 +1100307/*
308 * Allow large block sizes to be reported to userspace programs if the
Barry Naujok556b8b12008-04-10 12:22:07 +1000309 * "largeio" mount option is used.
David Chinnere8c8b3a2005-11-02 10:33:05 +1100310 *
311 * If compatibility mode is specified, simply return the basic unit of caching
312 * so that we don't get inefficient read/modify/write I/O from user apps.
313 * Otherwise....
314 *
315 * If the underlying volume is a stripe, then return the stripe width in bytes
316 * as the recommended I/O size. It is not a stripe and we've set a default
317 * buffered I/O size, return that, otherwise return the compat default.
318 */
319static inline unsigned long
320xfs_preferred_iosize(xfs_mount_t *mp)
321{
322 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
323 return PAGE_CACHE_SIZE;
324 return (mp->m_swidth ?
325 (mp->m_swidth << mp->m_sb.sb_blocklog) :
326 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
327 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
328 PAGE_CACHE_SIZE));
329}
330
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
332
David Chinner92821e22007-05-24 15:26:31 +1000333#define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
334 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
Christoph Hellwig745f6912007-08-30 17:20:39 +1000336void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
337 int lnnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338#define xfs_force_shutdown(m,f) \
Christoph Hellwig745f6912007-08-30 17:20:39 +1000339 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Christoph Hellwig2b5decd2008-11-28 14:23:36 +1100341#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
342#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
343#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
344#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
345#define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
346#define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
347
348#define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen)
349#define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l))
350
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 * Flags for xfs_mountfs
353 */
Nathan Scott764d1f82006-03-31 13:04:17 +1000354#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
Nathan Scotta844f452005-11-02 14:38:42 +1100356static inline xfs_agnumber_t
357xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358{
Nathan Scotta844f452005-11-02 14:38:42 +1100359 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
360 do_div(ld, mp->m_sb.sb_agblocks);
361 return (xfs_agnumber_t) ld;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362}
363
Nathan Scotta844f452005-11-02 14:38:42 +1100364static inline xfs_agblock_t
365xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366{
Nathan Scotta844f452005-11-02 14:38:42 +1100367 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
368 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369}
370
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371/*
David Chinnerda353b02007-08-28 14:00:13 +1000372 * perag get/put wrappers for eventual ref counting
373 */
374static inline xfs_perag_t *
375xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
376{
377 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
378}
379
380static inline void
381xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
382{
383 /* nothing to see here, move along */
384}
385
386/*
David Chinner03135cf2007-02-10 18:35:15 +1100387 * Per-cpu superblock locking functions
388 */
389#ifdef HAVE_PERCPU_SB
390STATIC_INLINE void
391xfs_icsb_lock(xfs_mount_t *mp)
392{
393 mutex_lock(&mp->m_icsb_mutex);
394}
395
396STATIC_INLINE void
397xfs_icsb_unlock(xfs_mount_t *mp)
398{
399 mutex_unlock(&mp->m_icsb_mutex);
400}
401#else
402#define xfs_icsb_lock(mp)
403#define xfs_icsb_unlock(mp)
404#endif
405
406/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
David Chinner20f4ebf2007-02-10 18:36:10 +1100408 * xfs_growfs can specify a few fields which are more than int limit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 */
410typedef struct xfs_mod_sb {
411 xfs_sb_field_t msb_field; /* Field to modify, see below */
David Chinner20f4ebf2007-02-10 18:36:10 +1100412 int64_t msb_delta; /* Change to make to specified field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413} xfs_mod_sb_t;
414
David Chinner92821e22007-05-24 15:26:31 +1000415extern int xfs_log_sbcount(xfs_mount_t *, uint);
Christoph Hellwig42490232008-08-13 16:49:32 +1000416extern int xfs_mountfs(xfs_mount_t *mp);
Christoph Hellwigf538d4d2005-11-02 10:26:59 +1100417extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
Christoph Hellwig41b5c2e2008-08-13 16:49:57 +1000419extern void xfs_unmountfs(xfs_mount_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420extern int xfs_unmountfs_writesb(xfs_mount_t *);
David Chinner20f4ebf2007-02-10 18:36:10 +1100421extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
David Chinner8d280b92006-03-14 13:13:09 +1100422extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
David Chinner20f4ebf2007-02-10 18:36:10 +1100423 int64_t, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
425 uint, int);
Christoph Hellwig7884bc82009-01-19 02:04:07 +0100426extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
Nathan Scott764d1f82006-03-31 13:04:17 +1000428extern int xfs_readsb(xfs_mount_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429extern void xfs_freesb(xfs_mount_t *);
David Chinner92821e22007-05-24 15:26:31 +1000430extern int xfs_fs_writable(xfs_mount_t *);
Nathan Scott4cc929e2007-05-14 18:24:02 +1000431extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100433extern int xfs_dmops_get(struct xfs_mount *);
Christoph Hellwig293688e2007-08-29 11:59:36 +1000434extern void xfs_dmops_put(struct xfs_mount *);
435
436extern struct xfs_dmops xfs_dmcore_xfs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438#endif /* __KERNEL__ */
439
Barry Naujok847fff52008-10-30 17:05:38 +1100440extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
441extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t);
442extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
443extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
444
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445#endif /* __XFS_MOUNT_H__ */