blob: f5e9937f9bdb5266e2702c9c653cb7a683f09a2f [file] [log] [blame]
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 Sandeenb6e32222009-01-14 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 Sandeenb6e32222009-01-14 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
Linus Torvalds1da177e2005-04-16 15:20:36 -070068/*
69 * Prototypes and functions for the Data Migration subsystem.
70 */
71
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110072typedef int (*xfs_send_data_t)(int, struct xfs_inode *,
Christoph Hellwig126468b2008-03-06 13:44:57 +110073 xfs_off_t, size_t, int, int *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110075typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
Christoph Hellwigb267ce92007-08-30 17:21:30 +100076typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110077 struct xfs_inode *, dm_right_t,
78 struct xfs_inode *, dm_right_t,
Barry Naujok556b8b12008-04-10 12:22:07 +100079 const char *, const char *, mode_t, int, int);
Christoph Hellwig293688e2007-08-29 11:59:36 +100080typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
81 char *, char *);
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110082typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 dm_right_t, mode_t, int, int);
84
85typedef struct xfs_dmops {
86 xfs_send_data_t xfs_send_data;
87 xfs_send_mmap_t xfs_send_mmap;
88 xfs_send_destroy_t xfs_send_destroy;
89 xfs_send_namesp_t xfs_send_namesp;
Christoph Hellwig293688e2007-08-29 11:59:36 +100090 xfs_send_mount_t xfs_send_mount;
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 xfs_send_unmount_t xfs_send_unmount;
92} xfs_dmops_t;
93
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110094#define XFS_SEND_DATA(mp, ev,ip,off,len,fl,lock) \
95 (*(mp)->m_dm_ops->xfs_send_data)(ev,ip,off,len,fl,lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -070096#define XFS_SEND_MMAP(mp, vma,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +100097 (*(mp)->m_dm_ops->xfs_send_mmap)(vma,fl)
Christoph Hellwigbc4ac742008-03-06 13:45:58 +110098#define XFS_SEND_DESTROY(mp, ip,right) \
99 (*(mp)->m_dm_ops->xfs_send_destroy)(ip,right)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
Christoph Hellwig293688e2007-08-29 11:59:36 +1000101 (*(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 +1000102#define XFS_SEND_PREUNMOUNT(mp,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
103 (*(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 +1000104#define XFS_SEND_MOUNT(mp,right,path,name) \
105 (*(mp)->m_dm_ops->xfs_send_mount)(mp,right,path,name)
Christoph Hellwigbc4ac742008-03-06 13:45:58 +1100106#define XFS_SEND_UNMOUNT(mp, ip,right,mode,rval,fl) \
107 (*(mp)->m_dm_ops->xfs_send_unmount)(mp,ip,right,mode,rval,fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
109
110/*
111 * Prototypes and functions for the Quota Management subsystem.
112 */
113
114struct xfs_dquot;
115struct xfs_dqtrxops;
116struct xfs_quotainfo;
117
118typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
Christoph Hellwig42490232008-08-13 16:49:32 +1000119typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint);
Christoph Hellwige57481d2008-12-03 12:20:36 +0100120typedef void (*xfs_qmunmount_t)(struct xfs_mount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121typedef void (*xfs_qmdone_t)(struct xfs_mount *);
122typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
123typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
124typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
125typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
126typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000127 struct xfs_inode *, uid_t, gid_t, prid_t, uint,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 struct xfs_dquot **, struct xfs_dquot **);
129typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
130 struct xfs_dquot *, struct xfs_dquot *);
131typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
132typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
133 struct xfs_trans *, struct xfs_inode *,
134 struct xfs_dquot **, struct xfs_dquot *);
135typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
136 struct xfs_dquot *, struct xfs_dquot *, uint);
Christoph Hellwig00dd4022008-11-28 14:23:36 +1100137typedef void (*xfs_dqstatvfs_t)(struct xfs_inode *, struct kstatfs *);
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000138typedef int (*xfs_dqsync_t)(struct xfs_mount *, int flags);
139typedef int (*xfs_quotactl_t)(struct xfs_mount *, int, int, xfs_caddr_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
141typedef struct xfs_qmops {
142 xfs_qminit_t xfs_qminit;
143 xfs_qmdone_t xfs_qmdone;
144 xfs_qmmount_t xfs_qmmount;
145 xfs_qmunmount_t xfs_qmunmount;
146 xfs_dqrele_t xfs_dqrele;
147 xfs_dqattach_t xfs_dqattach;
148 xfs_dqdetach_t xfs_dqdetach;
149 xfs_dqpurgeall_t xfs_dqpurgeall;
150 xfs_dqvopalloc_t xfs_dqvopalloc;
151 xfs_dqvopcreate_t xfs_dqvopcreate;
152 xfs_dqvoprename_t xfs_dqvoprename;
153 xfs_dqvopchown_t xfs_dqvopchown;
154 xfs_dqvopchownresv_t xfs_dqvopchownresv;
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000155 xfs_dqstatvfs_t xfs_dqstatvfs;
156 xfs_dqsync_t xfs_dqsync;
157 xfs_quotactl_t xfs_quotactl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 struct xfs_dqtrxops *xfs_dqtrxops;
159} xfs_qmops_t;
160
161#define XFS_QM_INIT(mp, mnt, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000162 (*(mp)->m_qm_ops->xfs_qminit)(mp, mnt, fl)
Christoph Hellwig42490232008-08-13 16:49:32 +1000163#define XFS_QM_MOUNT(mp, mnt, fl) \
164 (*(mp)->m_qm_ops->xfs_qmmount)(mp, mnt, fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165#define XFS_QM_UNMOUNT(mp) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000166 (*(mp)->m_qm_ops->xfs_qmunmount)(mp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#define XFS_QM_DONE(mp) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000168 (*(mp)->m_qm_ops->xfs_qmdone)(mp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169#define XFS_QM_DQRELE(mp, dq) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000170 (*(mp)->m_qm_ops->xfs_dqrele)(dq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171#define XFS_QM_DQATTACH(mp, ip, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000172 (*(mp)->m_qm_ops->xfs_dqattach)(ip, fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173#define XFS_QM_DQDETACH(mp, ip) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000174 (*(mp)->m_qm_ops->xfs_dqdetach)(ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175#define XFS_QM_DQPURGEALL(mp, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000176 (*(mp)->m_qm_ops->xfs_dqpurgeall)(mp, fl)
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000177#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000178 (*(mp)->m_qm_ops->xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000180 (*(mp)->m_qm_ops->xfs_dqvopcreate)(tp, ip, dq1, dq2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181#define XFS_QM_DQVOPRENAME(mp, ip) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000182 (*(mp)->m_qm_ops->xfs_dqvoprename)(ip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000184 (*(mp)->m_qm_ops->xfs_dqvopchown)(tp, ip, dqp, dq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000186 (*(mp)->m_qm_ops->xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
187#define XFS_QM_DQSTATVFS(ip, statp) \
188 (*(ip)->i_mount->m_qm_ops->xfs_dqstatvfs)(ip, statp)
189#define XFS_QM_DQSYNC(mp, flags) \
190 (*(mp)->m_qm_ops->xfs_dqsync)(mp, flags)
191#define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
192 (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193
David Chinner8d280b92006-03-14 13:13:09 +1100194#ifdef HAVE_PERCPU_SB
195
196/*
197 * Valid per-cpu incore superblock counters. Note that if you add new counters,
198 * you may need to define new counter disabled bit field descriptors as there
199 * are more possible fields in the superblock that can fit in a bitfield on a
200 * 32 bit platform. The XFS_SBS_* values for the current current counters just
201 * fit.
202 */
203typedef struct xfs_icsb_cnts {
204 uint64_t icsb_fdblocks;
205 uint64_t icsb_ifree;
206 uint64_t icsb_icount;
David Chinner01e1b692006-03-14 13:29:16 +1100207 unsigned long icsb_flags;
David Chinner8d280b92006-03-14 13:13:09 +1100208} xfs_icsb_cnts_t;
209
David Chinner01e1b692006-03-14 13:29:16 +1100210#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
211
David Chinner8d280b92006-03-14 13:13:09 +1100212#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
213
214extern int xfs_icsb_init_counters(struct xfs_mount *);
Lachlan McIlroy5478eea2007-02-10 18:36:29 +1100215extern void xfs_icsb_reinit_counters(struct xfs_mount *);
Christoph Hellwigc962fb72008-05-20 15:10:52 +1000216extern void xfs_icsb_destroy_counters(struct xfs_mount *);
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000217extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
218extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
David Chinner8d280b92006-03-14 13:13:09 +1100219
220#else
Christoph Hellwigc962fb72008-05-20 15:10:52 +1000221#define xfs_icsb_init_counters(mp) (0)
222#define xfs_icsb_destroy_counters(mp) do { } while (0)
223#define xfs_icsb_reinit_counters(mp) do { } while (0)
Christoph Hellwigd4d90b52008-04-22 17:34:37 +1000224#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
Eric Sandeen71550542008-04-29 12:53:00 +1000225#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
David Chinner8d280b92006-03-14 13:13:09 +1100226#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227
228typedef struct xfs_mount {
Christoph Hellwigb267ce92007-08-30 17:21:30 +1000229 struct super_block *m_super;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 xfs_tid_t m_tid; /* next unused tid for fs */
David Chinner82fa9012008-10-30 17:38:26 +1100231 struct xfs_ail *m_ail; /* fs active log item list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 xfs_sb_t m_sb; /* copy of fs superblock */
Eric Sandeen3685c2a2007-10-11 17:42:32 +1000233 spinlock_t m_sb_lock; /* sb counter lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 struct xfs_buf *m_sb_bp; /* buffer for superblock */
235 char *m_fsname; /* filesystem name */
236 int m_fsname_len; /* strlen of fs name */
Nathan Scottfc1f8c12005-11-02 11:44:33 +1100237 char *m_rtname; /* realtime device name */
238 char *m_logname; /* external log device name */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 int m_bsize; /* fs logical block size */
240 xfs_agnumber_t m_agfrotor; /* last ag where space found */
241 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
Eric Sandeen36e41ee2007-10-11 17:43:43 +1000242 spinlock_t m_agirotor_lock;/* .. and lock protecting it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 uint m_readio_log; /* min read size log bytes */
245 uint m_readio_blocks; /* min read size blocks */
246 uint m_writeio_log; /* min write size log bytes */
247 uint m_writeio_blocks; /* min write size blocks */
248 struct log *m_log; /* log specific stuff */
249 int m_logbufs; /* number of log buffers */
250 int m_logbsize; /* size of each log buffer */
251 uint m_rsumlevels; /* rt summary levels */
252 uint m_rsumsize; /* size of rt summary, bytes */
253 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
254 struct xfs_inode *m_rsumip; /* pointer to summary inode */
255 struct xfs_inode *m_rootip; /* pointer to root directory */
256 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
257 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
258 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
259 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 __uint8_t m_blkbit_log; /* blocklog + NBBY */
261 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
262 __uint8_t m_agno_log; /* log #ag's */
263 __uint8_t m_agino_log; /* #bits for agino in inum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 __uint16_t m_inode_cluster_size;/* min inode buf size */
265 uint m_blockmask; /* sb_blocksize-1 */
266 uint m_blockwsize; /* sb_blocksize in words */
267 uint m_blockwmask; /* blockwsize-1 */
Christoph Hellwig60197e82008-10-30 17:11:19 +1100268 uint m_alloc_mxr[2]; /* max alloc btree records */
269 uint m_alloc_mnr[2]; /* min alloc btree records */
270 uint m_bmap_dmxr[2]; /* max bmap btree records */
271 uint m_bmap_dmnr[2]; /* min bmap btree records */
272 uint m_inobt_mxr[2]; /* max inobt btree records */
273 uint m_inobt_mnr[2]; /* min inobt btree records */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
275 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
276 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
277 struct xfs_perag *m_perag; /* per-ag accounting info */
278 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
Christoph Hellwigcc92e7a2007-08-30 17:21:54 +1000279 struct mutex m_growlock; /* growfs mutex */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 int m_fixedfsid[2]; /* unchanged for life of FS */
281 uint m_dmevmask; /* DMI events for this FS */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100282 __uint64_t m_flags; /* global mount flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 uint m_attroffset; /* inode attribute offset */
284 uint m_dir_node_ents; /* #entries in a dir danode */
285 uint m_attr_node_ents; /* #entries in attr danode */
286 int m_ialloc_inos; /* inodes in inode allocation */
287 int m_ialloc_blks; /* blocks in inode allocation */
288 int m_litino; /* size of inode union area */
289 int m_inoalign_mask;/* mask sb_inoalignmt if used */
290 uint m_qflags; /* quota status flags */
291 xfs_trans_reservations_t m_reservations;/* precomputed res values */
292 __uint64_t m_maxicount; /* maximum inode count */
293 __uint64_t m_maxioffset; /* maximum inode offset */
294 __uint64_t m_resblks; /* total reserved blocks */
295 __uint64_t m_resblks_avail;/* available reserved blocks */
296#if XFS_BIG_INUMS
297 xfs_ino_t m_inoadd; /* add value for ino64_offset */
298#endif
299 int m_dalign; /* stripe unit */
300 int m_swidth; /* stripe width */
Nathan Scottc41564b2006-03-29 08:55:14 +1000301 int m_sinoalign; /* stripe unit inode alignment */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302 int m_attr_magicpct;/* 37% of the blocksize */
303 int m_dir_magicpct; /* 37% of the dir blocksize */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
Barry Naujok5163f952008-05-21 16:41:01 +1000305 const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 int m_dirblksize; /* directory block sz--bytes */
307 int m_dirblkfsbs; /* directory block sz--fsbs */
308 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
309 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
310 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
311 uint m_chsize; /* size of next field */
312 struct xfs_chash *m_chash; /* fs private inode per-cluster
313 * hash table */
Christoph Hellwig293688e2007-08-29 11:59:36 +1000314 struct xfs_dmops *m_dm_ops; /* vector of DMI ops */
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000315 struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 atomic_t m_active_trans; /* number trans frozen */
David Chinner8d280b92006-03-14 13:13:09 +1100317#ifdef HAVE_PERCPU_SB
318 xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
319 unsigned long m_icsb_counters; /* disabled per-cpu counters */
David Chinnere8234a62006-03-14 13:23:52 +1100320 struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
David Chinner20b64282007-02-10 18:35:09 +1100321 struct mutex m_icsb_mutex; /* balancer sync lock */
David Chinner8d280b92006-03-14 13:13:09 +1100322#endif
David Chinner2a82b8b2007-07-11 11:09:12 +1000323 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
Christoph Hellwig74394492007-08-30 17:21:22 +1000324 struct task_struct *m_sync_task; /* generalised sync thread */
325 bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
326 struct list_head m_sync_list; /* sync thread work item list */
327 spinlock_t m_sync_lock; /* work item list lock */
328 int m_sync_seq; /* sync thread generation no. */
329 wait_queue_head_t m_wait_single_sync_task;
Christoph Hellwig49739142009-01-19 02:04:07 +0100330 __int64_t m_update_flags; /* sb flags we need to update
331 on the next remount,rw */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332} xfs_mount_t;
333
334/*
335 * Flags for m_flags.
336 */
David Chinner92821e22007-05-24 15:26:31 +1000337#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 must be synchronous except
339 for space allocations */
David Chinner92821e22007-05-24 15:26:31 +1000340#define XFS_MOUNT_INO64 (1ULL << 1)
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000341#define XFS_MOUNT_DMAPI (1ULL << 2) /* dmapi is enabled */
David Chinner92821e22007-05-24 15:26:31 +1000342#define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
Nathan Scotte718eeb42005-11-02 15:09:22 +1100343#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 operations, typically for
345 disk errors in metadata */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100346#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 user */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100348#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 allocations */
Nathan Scott13059ff2006-01-11 15:32:01 +1100350#define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000351#define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100352#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100353#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
354#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 /* osyncisdsync is now default*/
Nathan Scotte718eeb42005-11-02 15:09:22 +1100356#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 * 32 bits in size */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000358#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100359#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
360#define XFS_MOUNT_BARRIER (1ULL << 17)
Josef Jeff Sipek1bd960e2008-02-29 13:58:40 +1100361#define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
Nathan Scotte718eeb42005-11-02 15:09:22 +1100362#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 * allocation */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000364#define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
Nathan Scotte718eeb42005-11-02 15:09:22 +1100365#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
366#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
David Chinnere8c8b3a2005-11-02 10:33:05 +1100367 * I/O size in stat() */
David Chinner8d280b92006-03-14 13:13:09 +1100368#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
369 counters */
David Chinner2a82b8b2007-07-11 11:09:12 +1000370#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
371 allocator */
Tim Shimmin7c12f292008-04-30 18:15:28 +1000372#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
David Chinnere8c8b3a2005-11-02 10:33:05 +1100373
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374
375/*
376 * Default minimum read and write sizes.
377 */
378#define XFS_READIO_LOG_LARGE 16
379#define XFS_WRITEIO_LOG_LARGE 16
380
381/*
Nathan Scott1f443ad2005-05-05 13:28:29 -0700382 * Max and min values for mount-option defined I/O
383 * preallocation sizes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 */
Nathan Scott1f443ad2005-05-05 13:28:29 -0700385#define XFS_MAX_IO_LOG 30 /* 1G */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386#define XFS_MIN_IO_LOG PAGE_SHIFT
387
388/*
389 * Synchronous read and write sizes. This should be
390 * better for NFSv2 wsync filesystems.
391 */
392#define XFS_WSYNC_READIO_LOG 15 /* 32K */
393#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
394
David Chinnere8c8b3a2005-11-02 10:33:05 +1100395/*
396 * Allow large block sizes to be reported to userspace programs if the
Barry Naujok556b8b12008-04-10 12:22:07 +1000397 * "largeio" mount option is used.
David Chinnere8c8b3a2005-11-02 10:33:05 +1100398 *
399 * If compatibility mode is specified, simply return the basic unit of caching
400 * so that we don't get inefficient read/modify/write I/O from user apps.
401 * Otherwise....
402 *
403 * If the underlying volume is a stripe, then return the stripe width in bytes
404 * as the recommended I/O size. It is not a stripe and we've set a default
405 * buffered I/O size, return that, otherwise return the compat default.
406 */
407static inline unsigned long
408xfs_preferred_iosize(xfs_mount_t *mp)
409{
410 if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
411 return PAGE_CACHE_SIZE;
412 return (mp->m_swidth ?
413 (mp->m_swidth << mp->m_sb.sb_blocklog) :
414 ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
415 (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
416 PAGE_CACHE_SIZE));
417}
418
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
420
David Chinner92821e22007-05-24 15:26:31 +1000421#define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
422 ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
Christoph Hellwig745f6912007-08-30 17:20:39 +1000424void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
425 int lnnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426#define xfs_force_shutdown(m,f) \
Christoph Hellwig745f6912007-08-30 17:20:39 +1000427 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Christoph Hellwig2b5decd2008-11-28 14:23:36 +1100429#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
430#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
431#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
432#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
433#define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
434#define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
435
436#define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen)
437#define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l))
438
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 * Flags for xfs_mountfs
441 */
Nathan Scott764d1f82006-03-31 13:04:17 +1000442#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443
Nathan Scotta844f452005-11-02 14:38:42 +1100444static inline xfs_agnumber_t
445xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446{
Nathan Scotta844f452005-11-02 14:38:42 +1100447 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
448 do_div(ld, mp->m_sb.sb_agblocks);
449 return (xfs_agnumber_t) ld;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450}
451
Nathan Scotta844f452005-11-02 14:38:42 +1100452static inline xfs_agblock_t
453xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454{
Nathan Scotta844f452005-11-02 14:38:42 +1100455 xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
456 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457}
458
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459/*
David Chinnerda353b02007-08-28 14:00:13 +1000460 * perag get/put wrappers for eventual ref counting
461 */
462static inline xfs_perag_t *
463xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
464{
465 return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
466}
467
468static inline void
469xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
470{
471 /* nothing to see here, move along */
472}
473
474/*
David Chinner03135cf2007-02-10 18:35:15 +1100475 * Per-cpu superblock locking functions
476 */
477#ifdef HAVE_PERCPU_SB
478STATIC_INLINE void
479xfs_icsb_lock(xfs_mount_t *mp)
480{
481 mutex_lock(&mp->m_icsb_mutex);
482}
483
484STATIC_INLINE void
485xfs_icsb_unlock(xfs_mount_t *mp)
486{
487 mutex_unlock(&mp->m_icsb_mutex);
488}
489#else
490#define xfs_icsb_lock(mp)
491#define xfs_icsb_unlock(mp)
492#endif
493
494/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
David Chinner20f4ebf2007-02-10 18:36:10 +1100496 * xfs_growfs can specify a few fields which are more than int limit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 */
498typedef struct xfs_mod_sb {
499 xfs_sb_field_t msb_field; /* Field to modify, see below */
David Chinner20f4ebf2007-02-10 18:36:10 +1100500 int64_t msb_delta; /* Change to make to specified field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501} xfs_mod_sb_t;
502
Jes Sorensen794ee1b2006-01-09 15:59:21 -0800503#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505
David Chinner92821e22007-05-24 15:26:31 +1000506extern int xfs_log_sbcount(xfs_mount_t *, uint);
Christoph Hellwig42490232008-08-13 16:49:32 +1000507extern int xfs_mountfs(xfs_mount_t *mp);
Christoph Hellwigf538d4d2005-11-02 10:26:59 +1100508extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
Christoph Hellwig41b5c2e2008-08-13 16:49:57 +1000510extern void xfs_unmountfs(xfs_mount_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511extern int xfs_unmountfs_writesb(xfs_mount_t *);
David Chinner20f4ebf2007-02-10 18:36:10 +1100512extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
David Chinner8d280b92006-03-14 13:13:09 +1100513extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t,
David Chinner20f4ebf2007-02-10 18:36:10 +1100514 int64_t, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
516 uint, int);
Christoph Hellwig49739142009-01-19 02:04:07 +0100517extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
Nathan Scott764d1f82006-03-31 13:04:17 +1000519extern int xfs_readsb(xfs_mount_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520extern void xfs_freesb(xfs_mount_t *);
David Chinner92821e22007-05-24 15:26:31 +1000521extern int xfs_fs_writable(xfs_mount_t *);
Nathan Scott4cc929e2007-05-14 18:24:02 +1000522extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100524extern int xfs_dmops_get(struct xfs_mount *);
Christoph Hellwig293688e2007-08-29 11:59:36 +1000525extern void xfs_dmops_put(struct xfs_mount *);
Christoph Hellwig9d565ff2008-10-30 17:53:24 +1100526extern int xfs_qmops_get(struct xfs_mount *);
Christoph Hellwigb09cc772007-08-30 17:19:57 +1000527extern void xfs_qmops_put(struct xfs_mount *);
Christoph Hellwig293688e2007-08-29 11:59:36 +1000528
529extern struct xfs_dmops xfs_dmcore_xfs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531#endif /* __KERNEL__ */
532
Barry Naujok847fff52008-10-30 17:05:38 +1100533extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
534extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t);
535extern 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);
537
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538#endif /* __XFS_MOUNT_H__ */