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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
David Chinner03135cf2007-02-10 18:35:15 +110021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022typedef 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#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;
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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
Linus Torvalds1da177e2005-04-16 15:20:36 -070065/*
66 * Prototypes and functions for the Data Migration subsystem.
67 */
68
Christoph Hellwig0a74cd12007-08-29 11:53:12 +100069typedef int (*xfs_send_data_t)(int, bhv_vnode_t *,
Nathan Scott8285fb52006-06-09 17:07:12 +100070 xfs_off_t, size_t, int, bhv_vrwlock_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
Christoph Hellwig0a74cd12007-08-29 11:53:12 +100072typedef int (*xfs_send_destroy_t)(bhv_vnode_t *, dm_right_t);
Christoph Hellwigb267ce92007-08-30 17:21:30 +100073typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
Christoph Hellwig0a74cd12007-08-29 11:53:12 +100074 bhv_vnode_t *,
75 dm_right_t, bhv_vnode_t *, dm_right_t,
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 char *, char *, mode_t, int, int);
Christoph Hellwig293688e2007-08-29 11:59:36 +100077typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
78 char *, char *);
Christoph Hellwigb267ce92007-08-30 17:21:30 +100079typedef void (*xfs_send_unmount_t)(struct xfs_mount *, bhv_vnode_t *,
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 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;
Christoph Hellwig293688e2007-08-29 11:59:36 +100087 xfs_send_mount_t xfs_send_mount;
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 xfs_send_unmount_t xfs_send_unmount;
89} xfs_dmops_t;
90
91#define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100092 (*(mp)->m_dm_ops->xfs_send_data)(ev,vp,off,len,fl,lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -070093#define XFS_SEND_MMAP(mp, vma,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100094 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -070095#define XFS_SEND_DESTROY(mp, vp,right) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100096 (*(mp)->m_dm_ops->xfs_send_destroy)(vp,right)
Linus Torvalds1da177e2005-04-16 15:20:36 -070097#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100098 (*(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 +100099#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)
Christoph Hellwig293688e2007-08-29 11:59:36 +1000101#define XFS_SEND_MOUNT(mp,right,path,name) \
102 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000103#define XFS_SEND_UNMOUNT(mp, vp,right,mode,rval,fl) \
104 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,vp,right,mode,rval,fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
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 *,
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000124 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 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);
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000134typedef 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
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;
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000152 xfs_dqstatvfs_t xfs_dqstatvfs;
153 xfs_dqsync_t xfs_dqsync;
154 xfs_quotactl_t xfs_quotactl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 struct xfs_dqtrxops *xfs_dqtrxops;
156} xfs_qmops_t;
157
158#define XFS_QM_INIT(mp, mnt, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000159 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160#define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000161 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl, mfsi_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162#define XFS_QM_UNMOUNT(mp) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000163 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164#define XFS_QM_DONE(mp) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000165 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166#define XFS_QM_DQRELE(mp, dq) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000167 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168#define XFS_QM_DQATTACH(mp, ip, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000169 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170#define XFS_QM_DQDETACH(mp, ip) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000171 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172#define XFS_QM_DQPURGEALL(mp, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000173 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000174#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000175 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000177 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178#define XFS_QM_DQVOPRENAME(mp, ip) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000179 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000181 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000183 (*(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)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190
David Chinner8d280b92006-03-14 13:13:09 +1100191#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;
David Chinner01e1b692006-03-14 13:29:16 +1100204 unsigned long icsb_flags;
David Chinner8d280b92006-03-14 13:13:09 +1100205} xfs_icsb_cnts_t;
206
David Chinner01e1b692006-03-14 13:29:16 +1100207#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
208
David Chinner8d280b92006-03-14 13:13:09 +1100209#define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */
210#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
211
212extern int xfs_icsb_init_counters(struct xfs_mount *);
Lachlan McIlroy5478eea2007-02-10 18:36:29 +1100213extern void xfs_icsb_reinit_counters(struct xfs_mount *);
David Chinnerdbcabad2007-02-10 18:36:17 +1100214extern void xfs_icsb_sync_counters_flags(struct xfs_mount *, int);
David Chinner8d280b92006-03-14 13:13:09 +1100215
216#else
217#define xfs_icsb_init_counters(mp) (0)
Lachlan McIlroy5478eea2007-02-10 18:36:29 +1100218#define xfs_icsb_reinit_counters(mp) do { } while (0)
Kevin Jamiesonc97be732007-02-10 18:36:23 +1100219#define xfs_icsb_sync_counters_flags(mp, flags) do { } while (0)
David Chinner8d280b92006-03-14 13:13:09 +1100220#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
David Chinner249a8c12008-02-05 12:13:32 +1100222typedef struct xfs_ail {
223 xfs_ail_entry_t xa_ail;
224 uint xa_gen;
225 struct task_struct *xa_task;
226 xfs_lsn_t xa_target;
227} xfs_ail_t;
228
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229typedef struct xfs_mount {
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000230 struct super_block *m_super;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 xfs_tid_t m_tid; /* next unused tid for fs */
Donald Douwsma287f3da2007-10-11 17:36:05 +1000232 spinlock_t m_ail_lock; /* fs AIL mutex */
David Chinner249a8c12008-02-05 12:13:32 +1100233 xfs_ail_t m_ail; /* fs active log item list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 xfs_sb_t m_sb; /* copy of fs superblock */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000235 spinlock_t m_sb_lock; /* sb counter lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 struct xfs_buf *m_sb_bp; /* buffer for superblock */
237 char *m_fsname; /* filesystem name */
238 int m_fsname_len; /* strlen of fs name */
Nathan Scottfc1f8c12005-11-02 11:44:33 +1100239 char *m_rtname; /* realtime device name */
240 char *m_logname; /* external log device name */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 int m_bsize; /* fs logical block size */
242 xfs_agnumber_t m_agfrotor; /* last ag where space found */
243 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
Eric Sandeen36e41ee2007-10-11 17:43:43 +1000244 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 struct xfs_inode *m_inodes; /* active inode list */
247 struct list_head m_del_inodes; /* inodes to reclaim */
248 mutex_t m_ilock; /* inode list mutex */
249 uint m_ireclaims; /* count of calls to reclaim*/
250 uint m_readio_log; /* min read size log bytes */
251 uint m_readio_blocks; /* min read size blocks */
252 uint m_writeio_log; /* min write size log bytes */
253 uint m_writeio_blocks; /* min write size blocks */
254 struct log *m_log; /* log specific stuff */
255 int m_logbufs; /* number of log buffers */
256 int m_logbsize; /* size of each log buffer */
257 uint m_rsumlevels; /* rt summary levels */
258 uint m_rsumsize; /* size of rt summary, bytes */
259 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
260 struct xfs_inode *m_rsumip; /* pointer to summary inode */
261 struct xfs_inode *m_rootip; /* pointer to root directory */
262 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
263 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
264 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
265 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
267 __uint8_t m_blkbit_log; /* blocklog + NBBY */
268 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
269 __uint8_t m_agno_log; /* log #ag's */
270 __uint8_t m_agino_log; /* #bits for agino in inum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 __uint16_t m_inode_cluster_size;/* min inode buf size */
272 uint m_blockmask; /* sb_blocksize-1 */
273 uint m_blockwsize; /* sb_blocksize in words */
274 uint m_blockwmask; /* blockwsize-1 */
275 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
276 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
277 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
278 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
279 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
280 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
281 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
282 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
283 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
284 struct xfs_perag *m_perag; /* per-ag accounting info */
285 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000286 struct mutex m_growlock; /* growfs mutex */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 int m_fixedfsid[2]; /* unchanged for life of FS */
288 uint m_dmevmask; /* DMI events for this FS */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100289 __uint64_t m_flags; /* global mount flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 uint m_attroffset; /* inode attribute offset */
291 uint m_dir_node_ents; /* #entries in a dir danode */
292 uint m_attr_node_ents; /* #entries in attr danode */
293 int m_ialloc_inos; /* inodes in inode allocation */
294 int m_ialloc_blks; /* blocks in inode allocation */
295 int m_litino; /* size of inode union area */
296 int m_inoalign_mask;/* mask sb_inoalignmt if used */
297 uint m_qflags; /* quota status flags */
298 xfs_trans_reservations_t m_reservations;/* precomputed res values */
299 __uint64_t m_maxicount; /* maximum inode count */
300 __uint64_t m_maxioffset; /* maximum inode offset */
301 __uint64_t m_resblks; /* total reserved blocks */
302 __uint64_t m_resblks_avail;/* available reserved blocks */
303#if XFS_BIG_INUMS
304 xfs_ino_t m_inoadd; /* add value for ino64_offset */
305#endif
306 int m_dalign; /* stripe unit */
307 int m_swidth; /* stripe width */
Nathan Scottc41564b2006-03-29 08:55:14 +1000308 int m_sinoalign; /* stripe unit inode alignment */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 int m_attr_magicpct;/* 37% of the blocksize */
310 int m_dir_magicpct; /* 37% of the dir blocksize */
311 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
312 __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
313 field governed by m_ilock */
314 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 int m_dirblksize; /* directory block sz--bytes */
316 int m_dirblkfsbs; /* directory block sz--fsbs */
317 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
318 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
319 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
320 uint m_chsize; /* size of next field */
321 struct xfs_chash *m_chash; /* fs private inode per-cluster
322 * hash table */
Christoph Hellwig293688e2007-08-29 11:59:36 +1000323 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000324 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 atomic_t m_active_trans; /* number trans frozen */
David Chinner8d280b92006-03-14 13:13:09 +1100326#ifdef HAVE_PERCPU_SB
327 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
328 unsigned long m_icsb_counters; /* disabled per-cpu counters */
David Chinnere8234a62006-03-14 13:23:52 +1100329 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
David Chinner20b64282007-02-10 18:35:09 +1100330 struct mutex m_icsb_mutex; /* balancer sync lock */
David Chinner8d280b92006-03-14 13:13:09 +1100331#endif
David Chinner2a82b8b2007-07-11 11:09:12 +1000332 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
Christoph Hellwig74394492007-08-30 17:21:22 +1000333 struct task_struct *m_sync_task; /* generalised sync thread */
334 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
335 struct list_head m_sync_list; /* sync thread work item list */
336 spinlock_t m_sync_lock; /* work item list lock */
337 int m_sync_seq; /* sync thread generation no. */
338 wait_queue_head_t m_wait_single_sync_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339} xfs_mount_t;
340
341/*
342 * Flags for m_flags.
343 */
David Chinner92821e22007-05-24 15:26:31 +1000344#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 must be synchronous except
346 for space allocations */
David Chinner92821e22007-05-24 15:26:31 +1000347#define XFS_MOUNT_INO64 (1ULL << 1)
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000348#define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
David Chinner92821e22007-05-24 15:26:31 +1000349#define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
Nathan Scotte718eeb42005-11-02 15:09:22 +1100350#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 operations, typically for
352 disk errors in metadata */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100353#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 user */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100355#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 allocations */
Nathan Scott13059ff2006-01-11 15:32:01 +1100357#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000358#define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100359#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
360#define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
361#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
362#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 /* osyncisdsync is now default*/
Nathan Scotte718eeb42005-11-02 15:09:22 +1100364#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 * 32 bits in size */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000366#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100367#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
368#define XFS_MOUNT_BARRIER (1ULL << 17)
Josef Jeff Sipek1bd960e2008-02-29 13:58:40 +1100369#define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
Nathan Scotte718eeb42005-11-02 15:09:22 +1100370#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 * allocation */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000372#define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100373#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
374#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
David Chinnere8c8b3a2005-11-02 10:33:05 +1100375 * I/O size in stat() */
David Chinner8d280b92006-03-14 13:13:09 +1100376#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
377 counters */
David Chinner2a82b8b2007-07-11 11:09:12 +1000378#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
379 allocator */
David Chinnere8c8b3a2005-11-02 10:33:05 +1100380
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381
382/*
383 * Default minimum read and write sizes.
384 */
385#define XFS_READIO_LOG_LARGE 16
386#define XFS_WRITEIO_LOG_LARGE 16
387
388/*
Nathan Scott1f443ad2005-05-05 13:28:29 -0700389 * Max and min values for mount-option defined I/O
390 * preallocation sizes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 */
Nathan Scott1f443ad2005-05-05 13:28:29 -0700392#define XFS_MAX_IO_LOG 30 /* 1G */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393#define XFS_MIN_IO_LOG PAGE_SHIFT
394
395/*
396 * Synchronous read and write sizes. This should be
397 * better for NFSv2 wsync filesystems.
398 */
399#define XFS_WSYNC_READIO_LOG 15 /* 32K */
400#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
401
David Chinnere8c8b3a2005-11-02 10:33:05 +1100402/*
403 * Allow large block sizes to be reported to userspace programs if the
404 * "largeio" mount option is used.
405 *
406 * If compatibility mode is specified, simply return the basic unit of caching
407 * so that we don't get inefficient read/modify/write I/O from user apps.
408 * Otherwise....
409 *
410 * If the underlying volume is a stripe, then return the stripe width in bytes
411 * as the recommended I/O size. It is not a stripe and we've set a default
412 * buffered I/O size, return that, otherwise return the compat default.
413 */
414static inline unsigned long
415xfs_preferred_iosize(xfs_mount_t *mp)
416{
417 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
418 return PAGE_CACHE_SIZE;
419 return (mp->m_swidth ?
420 (mp->m_swidth << mp->m_sb.sb_blocklog) :
421 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
422 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
423 PAGE_CACHE_SIZE));
424}
425
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
427
David Chinner92821e22007-05-24 15:26:31 +1000428#define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
429 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
Christoph Hellwig745f6912007-08-30 17:20:39 +1000431void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
432 int lnnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433#define xfs_force_shutdown(m,f) \
Christoph Hellwig745f6912007-08-30 17:20:39 +1000434 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435
436/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 * Flags for xfs_mountfs
438 */
439#define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
440#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
Nathan Scott764d1f82006-03-31 13:04:17 +1000441/* XFS_MFSI_RRINODES */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
443 /* log recovery */
444#define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
Nathan Scott764d1f82006-03-31 13:04:17 +1000445/* XFS_MFSI_CONVERT_SUNIT */
446#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
Nathan Scotta844f452005-11-02 14:38:42 +1100449static inline xfs_agnumber_t
450xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451{
Nathan Scotta844f452005-11-02 14:38:42 +1100452 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
453 do_div(ld, mp->m_sb.sb_agblocks);
454 return (xfs_agnumber_t) ld;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455}
456
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
Nathan Scotta844f452005-11-02 14:38:42 +1100458static inline xfs_agblock_t
459xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460{
Nathan Scotta844f452005-11-02 14:38:42 +1100461 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
462 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463}
464
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465/*
David Chinnerda353b02007-08-28 14:00:13 +1000466 * perag get/put wrappers for eventual ref counting
467 */
468static inline xfs_perag_t *
469xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
470{
471 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
472}
473
474static inline void
475xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
476{
477 /* nothing to see here, move along */
478}
479
480/*
David Chinner03135cf2007-02-10 18:35:15 +1100481 * Per-cpu superblock locking functions
482 */
483#ifdef HAVE_PERCPU_SB
484STATIC_INLINE void
485xfs_icsb_lock(xfs_mount_t *mp)
486{
487 mutex_lock(&mp->m_icsb_mutex);
488}
489
490STATIC_INLINE void
491xfs_icsb_unlock(xfs_mount_t *mp)
492{
493 mutex_unlock(&mp->m_icsb_mutex);
494}
495#else
496#define xfs_icsb_lock(mp)
497#define xfs_icsb_unlock(mp)
498#endif
499
500/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
David Chinner20f4ebf2007-02-10 18:36:10 +1100502 * xfs_growfs can specify a few fields which are more than int limit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 */
504typedef struct xfs_mod_sb {
505 xfs_sb_field_t msb_field; /* Field to modify, see below */
David Chinner20f4ebf2007-02-10 18:36:10 +1100506 int64_t msb_delta; /* Change to make to specified field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507} xfs_mod_sb_t;
508
Jes Sorensen794ee1b2006-01-09 15:59:21 -0800509#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511
512extern xfs_mount_t *xfs_mount_init(void);
513extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
David Chinner92821e22007-05-24 15:26:31 +1000514extern int xfs_log_sbcount(xfs_mount_t *, uint);
Christoph Hellwig745f6912007-08-30 17:20:39 +1000515extern void xfs_mount_free(xfs_mount_t *mp);
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000516extern int xfs_mountfs(xfs_mount_t *mp, int);
Christoph Hellwigf538d4d2005-11-02 10:26:59 +1100517extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
519extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *);
521extern int xfs_unmountfs_writesb(xfs_mount_t *);
522extern int xfs_unmount_flush(xfs_mount_t *, int);
David Chinner20f4ebf2007-02-10 18:36:10 +1100523extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
David Chinner8d280b92006-03-14 13:13:09 +1100524extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
David Chinner20f4ebf2007-02-10 18:36:10 +1100525 int64_t, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
527 uint, int);
528extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
Nathan Scott764d1f82006-03-31 13:04:17 +1000529extern int xfs_readsb(xfs_mount_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530extern void xfs_freesb(xfs_mount_t *);
David Chinner92821e22007-05-24 15:26:31 +1000531extern int xfs_fs_writable(xfs_mount_t *);
Lachlan McIlroy1f9b3b62007-02-10 18:35:33 +1100532extern int xfs_syncsub(xfs_mount_t *, int, int *);
533extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000534extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
Christoph Hellwig2bdf7cd2007-08-28 13:58:06 +1000535extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
536extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
Nathan Scott4cc929e2007-05-14 18:24:02 +1000537extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538
Christoph Hellwig293688e2007-08-29 11:59:36 +1000539extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *);
540extern void xfs_dmops_put(struct xfs_mount *);
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000541extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *);
542extern void xfs_qmops_put(struct xfs_mount *);
Christoph Hellwig293688e2007-08-29 11:59:36 +1000543
544extern struct xfs_dmops xfs_dmcore_xfs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545
546extern int xfs_init(void);
547extern void xfs_cleanup(void);
548
549#endif /* __KERNEL__ */
550
551#endif /* __XFS_MOUNT_H__ */