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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;
Barry Naujok5163f952008-05-21 16:41:01 +100064struct xfs_nameops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Linus Torvalds1da177e2005-04-16 15:20:36 -070066/*
67 * Prototypes and functions for the Data Migration subsystem.
68 */
69
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110070typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
Christoph Hellwig126468b2008-03-06 13:44:57 +110071 xfs_off_t, size_t, int, int *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110073typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
Christoph Hellwigb267ce92007-08-30 17:21:30 +100074typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110075 struct xfs_inode *, dm_right_t,
76 struct xfs_inode *, dm_right_t,
Barry Naujok556b8b12008-04-10 12:22:07 +100077 const char *, const char *, mode_t, int, int);
Christoph Hellwig293688e2007-08-29 11:59:36 +100078typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
79 char *, char *);
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110080typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 dm_right_t, mode_t, int, int);
82
83typedef struct xfs_dmops {
84 xfs_send_data_t xfs_send_data;
85 xfs_send_mmap_t xfs_send_mmap;
86 xfs_send_destroy_t xfs_send_destroy;
87 xfs_send_namesp_t xfs_send_namesp;
Christoph Hellwig293688e2007-08-29 11:59:36 +100088 xfs_send_mount_t xfs_send_mount;
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 xfs_send_unmount_t xfs_send_unmount;
90} xfs_dmops_t;
91
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110092#define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
93 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -070094#define XFS_SEND_MMAP(mp, vma,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100095 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110096#define XFS_SEND_DESTROY(mp, ip,right) \
97 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100099 (*(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 +1000100#define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
101 (*(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 +1000102#define XFS_SEND_MOUNT(mp,right,path,name) \
103 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
Christoph Hellwigbc4ac742008-03-06 13:45:58 +1100104#define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
105 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
107
108/*
109 * Prototypes and functions for the Quota Management subsystem.
110 */
111
112struct xfs_dquot;
113struct xfs_dqtrxops;
114struct xfs_quotainfo;
115
116typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
Christoph Hellwig42490232008-08-13 16:49:32 +1000117typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
119typedef void (*xfs_qmdone_t)(struct xfs_mount *);
120typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
121typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
122typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
123typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
124typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000125 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 struct xfs_dquot **, struct xfs_dquot **);
127typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
128 struct xfs_dquot *, struct xfs_dquot *);
129typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
130typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
131 struct xfs_trans *, struct xfs_inode *,
132 struct xfs_dquot **, struct xfs_dquot *);
133typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
134 struct xfs_dquot *, struct xfs_dquot *, uint);
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000135typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, bhv_statvfs_t *);
136typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags);
137typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
139typedef struct xfs_qmops {
140 xfs_qminit_t xfs_qminit;
141 xfs_qmdone_t xfs_qmdone;
142 xfs_qmmount_t xfs_qmmount;
143 xfs_qmunmount_t xfs_qmunmount;
144 xfs_dqrele_t xfs_dqrele;
145 xfs_dqattach_t xfs_dqattach;
146 xfs_dqdetach_t xfs_dqdetach;
147 xfs_dqpurgeall_t xfs_dqpurgeall;
148 xfs_dqvopalloc_t xfs_dqvopalloc;
149 xfs_dqvopcreate_t xfs_dqvopcreate;
150 xfs_dqvoprename_t xfs_dqvoprename;
151 xfs_dqvopchown_t xfs_dqvopchown;
152 xfs_dqvopchownresv_t xfs_dqvopchownresv;
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000153 xfs_dqstatvfs_t xfs_dqstatvfs;
154 xfs_dqsync_t xfs_dqsync;
155 xfs_quotactl_t xfs_quotactl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 struct xfs_dqtrxops *xfs_dqtrxops;
157} xfs_qmops_t;
158
159#define XFS_QM_INIT(mp, mnt, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000160 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
Christoph Hellwig42490232008-08-13 16:49:32 +1000161#define XFS_QM_MOUNT(mp, mnt, fl) \
162 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163#define XFS_QM_UNMOUNT(mp) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000164 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165#define XFS_QM_DONE(mp) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000166 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#define XFS_QM_DQRELE(mp, dq) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000168 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169#define XFS_QM_DQATTACH(mp, ip, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000170 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171#define XFS_QM_DQDETACH(mp, ip) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000172 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173#define XFS_QM_DQPURGEALL(mp, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000174 (*(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) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000176 (*(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) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000178 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179#define XFS_QM_DQVOPRENAME(mp, ip) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000180 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000182 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000184 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
185#define XFS_QM_DQSTATVFS(ip, statp) \
186 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
187#define XFS_QM_DQSYNC(mp, flags) \
188 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
189#define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
190 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191
David Chinner8d280b92006-03-14 13:13:09 +1100192#ifdef HAVE_PERCPU_SB
193
194/*
195 * Valid per-cpu incore superblock counters. Note that if you add new counters,
196 * you may need to define new counter disabled bit field descriptors as there
197 * are more possible fields in the superblock that can fit in a bitfield on a
198 * 32 bit platform. The XFS_SBS_* values for the current current counters just
199 * fit.
200 */
201typedef struct xfs_icsb_cnts {
202 uint64_t icsb_fdblocks;
203 uint64_t icsb_ifree;
204 uint64_t icsb_icount;
David Chinner01e1b692006-03-14 13:29:16 +1100205 unsigned long icsb_flags;
David Chinner8d280b92006-03-14 13:13:09 +1100206} xfs_icsb_cnts_t;
207
David Chinner01e1b692006-03-14 13:29:16 +1100208#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
209
David Chinner8d280b92006-03-14 13:13:09 +1100210#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 *);
Christoph Hellwigc962fb72008-05-20 15:10:52 +1000214extern void xfs_icsb_destroy_counters(struct xfs_mount *);
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000215extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
216extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
David Chinner8d280b92006-03-14 13:13:09 +1100217
218#else
Christoph Hellwigc962fb72008-05-20 15:10:52 +1000219#define xfs_icsb_init_counters(mp) (0)
220#define xfs_icsb_destroy_counters(mp) do { } while (0)
221#define xfs_icsb_reinit_counters(mp) do { } while (0)
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000222#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
Eric Sandeen71550542008-04-29 12:53:00 +1000223#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
David Chinner8d280b92006-03-14 13:13:09 +1100224#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
David Chinner249a8c12008-02-05 12:13:32 +1100226typedef struct xfs_ail {
Josef 'Jeff' Sipek535f6b32008-03-27 17:58:27 +1100227 struct list_head xa_ail;
David Chinner249a8c12008-02-05 12:13:32 +1100228 uint xa_gen;
229 struct task_struct *xa_task;
230 xfs_lsn_t xa_target;
231} xfs_ail_t;
232
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233typedef struct xfs_mount {
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000234 struct super_block *m_super;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 xfs_tid_t m_tid; /* next unused tid for fs */
Donald Douwsma287f3da2007-10-11 17:36:05 +1000236 spinlock_t m_ail_lock; /* fs AIL mutex */
David Chinner249a8c12008-02-05 12:13:32 +1100237 xfs_ail_t m_ail; /* fs active log item list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 xfs_sb_t m_sb; /* copy of fs superblock */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000239 spinlock_t m_sb_lock; /* sb counter lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 struct xfs_buf *m_sb_bp; /* buffer for superblock */
241 char *m_fsname; /* filesystem name */
242 int m_fsname_len; /* strlen of fs name */
Nathan Scottfc1f8c12005-11-02 11:44:33 +1100243 char *m_rtname; /* realtime device name */
244 char *m_logname; /* external log device name */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 int m_bsize; /* fs logical block size */
246 xfs_agnumber_t m_agfrotor; /* last ag where space found */
247 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
Eric Sandeen36e41ee2007-10-11 17:43:43 +1000248 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 struct xfs_inode *m_inodes; /* active inode list */
251 struct list_head m_del_inodes; /* inodes to reclaim */
252 mutex_t m_ilock; /* inode list mutex */
253 uint m_ireclaims; /* count of calls to reclaim*/
254 uint m_readio_log; /* min read size log bytes */
255 uint m_readio_blocks; /* min read size blocks */
256 uint m_writeio_log; /* min write size log bytes */
257 uint m_writeio_blocks; /* min write size blocks */
258 struct log *m_log; /* log specific stuff */
259 int m_logbufs; /* number of log buffers */
260 int m_logbsize; /* size of each log buffer */
261 uint m_rsumlevels; /* rt summary levels */
262 uint m_rsumsize; /* size of rt summary, bytes */
263 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
264 struct xfs_inode *m_rsumip; /* pointer to summary inode */
265 struct xfs_inode *m_rootip; /* pointer to root directory */
266 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
267 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
268 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
269 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
271 __uint8_t m_blkbit_log; /* blocklog + NBBY */
272 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
273 __uint8_t m_agno_log; /* log #ag's */
274 __uint8_t m_agino_log; /* #bits for agino in inum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 __uint16_t m_inode_cluster_size;/* min inode buf size */
276 uint m_blockmask; /* sb_blocksize-1 */
277 uint m_blockwsize; /* sb_blocksize in words */
278 uint m_blockwmask; /* blockwsize-1 */
279 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
280 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
281 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
282 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
283 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
284 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
285 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
286 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
287 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
288 struct xfs_perag *m_perag; /* per-ag accounting info */
289 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000290 struct mutex m_growlock; /* growfs mutex */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 int m_fixedfsid[2]; /* unchanged for life of FS */
292 uint m_dmevmask; /* DMI events for this FS */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100293 __uint64_t m_flags; /* global mount flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 uint m_attroffset; /* inode attribute offset */
295 uint m_dir_node_ents; /* #entries in a dir danode */
296 uint m_attr_node_ents; /* #entries in attr danode */
297 int m_ialloc_inos; /* inodes in inode allocation */
298 int m_ialloc_blks; /* blocks in inode allocation */
299 int m_litino; /* size of inode union area */
300 int m_inoalign_mask;/* mask sb_inoalignmt if used */
301 uint m_qflags; /* quota status flags */
302 xfs_trans_reservations_t m_reservations;/* precomputed res values */
303 __uint64_t m_maxicount; /* maximum inode count */
304 __uint64_t m_maxioffset; /* maximum inode offset */
305 __uint64_t m_resblks; /* total reserved blocks */
306 __uint64_t m_resblks_avail;/* available reserved blocks */
307#if XFS_BIG_INUMS
308 xfs_ino_t m_inoadd; /* add value for ino64_offset */
309#endif
310 int m_dalign; /* stripe unit */
311 int m_swidth; /* stripe width */
Nathan Scottc41564b2006-03-29 08:55:14 +1000312 int m_sinoalign; /* stripe unit inode alignment */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 int m_attr_magicpct;/* 37% of the blocksize */
314 int m_dir_magicpct; /* 37% of the dir blocksize */
315 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
316 __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
317 field governed by m_ilock */
318 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
Barry Naujok5163f952008-05-21 16:41:01 +1000319 const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 int m_dirblksize; /* directory block sz--bytes */
321 int m_dirblkfsbs; /* directory block sz--fsbs */
322 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
323 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
324 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
325 uint m_chsize; /* size of next field */
326 struct xfs_chash *m_chash; /* fs private inode per-cluster
327 * hash table */
Christoph Hellwig293688e2007-08-29 11:59:36 +1000328 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000329 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 atomic_t m_active_trans; /* number trans frozen */
David Chinner8d280b92006-03-14 13:13:09 +1100331#ifdef HAVE_PERCPU_SB
332 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
333 unsigned long m_icsb_counters; /* disabled per-cpu counters */
David Chinnere8234a62006-03-14 13:23:52 +1100334 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
David Chinner20b64282007-02-10 18:35:09 +1100335 struct mutex m_icsb_mutex; /* balancer sync lock */
David Chinner8d280b92006-03-14 13:13:09 +1100336#endif
David Chinner2a82b8b2007-07-11 11:09:12 +1000337 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
Christoph Hellwig74394492007-08-30 17:21:22 +1000338 struct task_struct *m_sync_task; /* generalised sync thread */
339 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
340 struct list_head m_sync_list; /* sync thread work item list */
341 spinlock_t m_sync_lock; /* work item list lock */
342 int m_sync_seq; /* sync thread generation no. */
343 wait_queue_head_t m_wait_single_sync_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344} xfs_mount_t;
345
346/*
347 * Flags for m_flags.
348 */
David Chinner92821e22007-05-24 15:26:31 +1000349#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 must be synchronous except
351 for space allocations */
David Chinner92821e22007-05-24 15:26:31 +1000352#define XFS_MOUNT_INO64 (1ULL << 1)
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000353#define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
David Chinner92821e22007-05-24 15:26:31 +1000354#define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
Nathan Scotte718eeb42005-11-02 15:09:22 +1100355#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 operations, typically for
357 disk errors in metadata */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100358#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 user */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100360#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 allocations */
Nathan Scott13059ff2006-01-11 15:32:01 +1100362#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000363#define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100364#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
365#define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
366#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
367#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 /* osyncisdsync is now default*/
Nathan Scotte718eeb42005-11-02 15:09:22 +1100369#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 * 32 bits in size */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000371#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100372#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
373#define XFS_MOUNT_BARRIER (1ULL << 17)
Josef Jeff Sipek1bd960e2008-02-29 13:58:40 +1100374#define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
Nathan Scotte718eeb42005-11-02 15:09:22 +1100375#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 * allocation */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000377#define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100378#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
379#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
David Chinnere8c8b3a2005-11-02 10:33:05 +1100380 * I/O size in stat() */
David Chinner8d280b92006-03-14 13:13:09 +1100381#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
382 counters */
David Chinner2a82b8b2007-07-11 11:09:12 +1000383#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
384 allocator */
Tim Shimmin7c12f292008-04-30 18:15:28 +1000385#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
David Chinnere8c8b3a2005-11-02 10:33:05 +1100386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387
388/*
389 * Default minimum read and write sizes.
390 */
391#define XFS_READIO_LOG_LARGE 16
392#define XFS_WRITEIO_LOG_LARGE 16
393
394/*
Nathan Scott1f443ad2005-05-05 13:28:29 -0700395 * Max and min values for mount-option defined I/O
396 * preallocation sizes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 */
Nathan Scott1f443ad2005-05-05 13:28:29 -0700398#define XFS_MAX_IO_LOG 30 /* 1G */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399#define XFS_MIN_IO_LOG PAGE_SHIFT
400
401/*
402 * Synchronous read and write sizes. This should be
403 * better for NFSv2 wsync filesystems.
404 */
405#define XFS_WSYNC_READIO_LOG 15 /* 32K */
406#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
407
David Chinnere8c8b3a2005-11-02 10:33:05 +1100408/*
409 * Allow large block sizes to be reported to userspace programs if the
Barry Naujok556b8b12008-04-10 12:22:07 +1000410 * "largeio" mount option is used.
David Chinnere8c8b3a2005-11-02 10:33:05 +1100411 *
412 * If compatibility mode is specified, simply return the basic unit of caching
413 * so that we don't get inefficient read/modify/write I/O from user apps.
414 * Otherwise....
415 *
416 * If the underlying volume is a stripe, then return the stripe width in bytes
417 * as the recommended I/O size. It is not a stripe and we've set a default
418 * buffered I/O size, return that, otherwise return the compat default.
419 */
420static inline unsigned long
421xfs_preferred_iosize(xfs_mount_t *mp)
422{
423 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
424 return PAGE_CACHE_SIZE;
425 return (mp->m_swidth ?
426 (mp->m_swidth << mp->m_sb.sb_blocklog) :
427 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
428 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
429 PAGE_CACHE_SIZE));
430}
431
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
433
David Chinner92821e22007-05-24 15:26:31 +1000434#define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
435 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
Christoph Hellwig745f6912007-08-30 17:20:39 +1000437void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
438 int lnnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439#define xfs_force_shutdown(m,f) \
Christoph Hellwig745f6912007-08-30 17:20:39 +1000440 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
442/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 * Flags for xfs_mountfs
444 */
Nathan Scott764d1f82006-03-31 13:04:17 +1000445#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
Nathan Scotta844f452005-11-02 14:38:42 +1100448static inline xfs_agnumber_t
449xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450{
Nathan Scotta844f452005-11-02 14:38:42 +1100451 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
452 do_div(ld, mp->m_sb.sb_agblocks);
453 return (xfs_agnumber_t) ld;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454}
455
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
Nathan Scotta844f452005-11-02 14:38:42 +1100457static inline xfs_agblock_t
458xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459{
Nathan Scotta844f452005-11-02 14:38:42 +1100460 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
461 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462}
463
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464/*
David Chinnerda353b02007-08-28 14:00:13 +1000465 * perag get/put wrappers for eventual ref counting
466 */
467static inline xfs_perag_t *
468xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
469{
470 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
471}
472
473static inline void
474xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
475{
476 /* nothing to see here, move along */
477}
478
479/*
David Chinner03135cf2007-02-10 18:35:15 +1100480 * Per-cpu superblock locking functions
481 */
482#ifdef HAVE_PERCPU_SB
483STATIC_INLINE void
484xfs_icsb_lock(xfs_mount_t *mp)
485{
486 mutex_lock(&mp->m_icsb_mutex);
487}
488
489STATIC_INLINE void
490xfs_icsb_unlock(xfs_mount_t *mp)
491{
492 mutex_unlock(&mp->m_icsb_mutex);
493}
494#else
495#define xfs_icsb_lock(mp)
496#define xfs_icsb_unlock(mp)
497#endif
498
499/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
David Chinner20f4ebf2007-02-10 18:36:10 +1100501 * xfs_growfs can specify a few fields which are more than int limit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 */
503typedef struct xfs_mod_sb {
504 xfs_sb_field_t msb_field; /* Field to modify, see below */
David Chinner20f4ebf2007-02-10 18:36:10 +1100505 int64_t msb_delta; /* Change to make to specified field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506} xfs_mod_sb_t;
507
Jes Sorensen794ee1b2006-01-09 15:59:21 -0800508#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
David Chinner92821e22007-05-24 15:26:31 +1000512extern int xfs_log_sbcount(xfs_mount_t *, uint);
Christoph Hellwig42490232008-08-13 16:49:32 +1000513extern int xfs_mountfs(xfs_mount_t *mp);
Christoph Hellwigf538d4d2005-11-02 10:26:59 +1100514extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
Christoph Hellwig41b5c2e2008-08-13 16:49:57 +1000516extern void xfs_unmountfs(xfs_mount_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517extern int xfs_unmountfs_writesb(xfs_mount_t *);
518extern int xfs_unmount_flush(xfs_mount_t *, int);
David Chinner20f4ebf2007-02-10 18:36:10 +1100519extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
David Chinner8d280b92006-03-14 13:13:09 +1100520extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
David Chinner20f4ebf2007-02-10 18:36:10 +1100521 int64_t, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
523 uint, int);
524extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
Nathan Scott764d1f82006-03-31 13:04:17 +1000525extern int xfs_readsb(xfs_mount_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526extern void xfs_freesb(xfs_mount_t *);
David Chinner92821e22007-05-24 15:26:31 +1000527extern int xfs_fs_writable(xfs_mount_t *);
Lachlan McIlroy1f9b3b62007-02-10 18:35:33 +1100528extern int xfs_syncsub(xfs_mount_t *, int, int *);
529extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000530extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
Christoph Hellwig2bdf7cd2007-08-28 13:58:06 +1000531extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
532extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
Nathan Scott4cc929e2007-05-14 18:24:02 +1000533extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534
Christoph Hellwig293688e2007-08-29 11:59:36 +1000535extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *);
536extern void xfs_dmops_put(struct xfs_mount *);
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000537extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *);
538extern void xfs_qmops_put(struct xfs_mount *);
Christoph Hellwig293688e2007-08-29 11:59:36 +1000539
540extern struct xfs_dmops xfs_dmcore_xfs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542#endif /* __KERNEL__ */
543
544#endif /* __XFS_MOUNT_H__ */