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1 | /* |
2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * 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. | |
13 | * | |
14 | * 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 | |
17 | */ | |
fe4fa4b8 DC |
18 | #ifndef XFS_SYNC_H |
19 | #define XFS_SYNC_H 1 | |
20 | ||
a167b17e DC |
21 | struct xfs_mount; |
22 | ||
23 | typedef struct bhv_vfs_sync_work { | |
24 | struct list_head w_list; | |
25 | struct xfs_mount *w_mount; | |
26 | void *w_data; /* syncer routine argument */ | |
27 | void (*w_syncer)(struct xfs_mount *, void *); | |
28 | } bhv_vfs_sync_work_t; | |
29 | ||
30 | #define SYNC_ATTR 0x0001 /* sync attributes */ | |
31 | #define SYNC_CLOSE 0x0002 /* close file system down */ | |
32 | #define SYNC_DELWRI 0x0004 /* look at delayed writes */ | |
33 | #define SYNC_WAIT 0x0008 /* wait for i/o to complete */ | |
34 | #define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */ | |
35 | #define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */ | |
36 | #define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */ | |
37 | #define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */ | |
38 | #define SYNC_IOWAIT 0x0100 /* wait for all I/O to complete */ | |
39 | ||
40 | /* | |
41 | * When remounting a filesystem read-only or freezing the filesystem, | |
42 | * we have two phases to execute. This first phase is syncing the data | |
43 | * before we quiesce the fielsystem, and the second is flushing all the | |
44 | * inodes out after we've waited for all the transactions created by | |
45 | * the first phase to complete. The second phase uses SYNC_INODE_QUIESCE | |
46 | * to ensure that the inodes are written to their location on disk | |
47 | * rather than just existing in transactions in the log. This means | |
48 | * after a quiesce there is no log replay required to write the inodes | |
49 | * to disk (this is the main difference between a sync and a quiesce). | |
50 | */ | |
51 | #define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT) | |
a167b17e DC |
52 | |
53 | int xfs_syncd_init(struct xfs_mount *mp); | |
54 | void xfs_syncd_stop(struct xfs_mount *mp); | |
55 | ||
fe4fa4b8 | 56 | int xfs_sync(struct xfs_mount *mp, int flags); |
2030b5ab | 57 | int xfs_sync_inodes(struct xfs_mount *mp, int flags); |
fe4fa4b8 | 58 | |
a167b17e DC |
59 | void xfs_flush_inode(struct xfs_inode *ip); |
60 | void xfs_flush_device(struct xfs_inode *ip); | |
61 | ||
fe4fa4b8 | 62 | #endif |