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2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
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.
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.
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
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
;
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 */
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).
51 #define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT)
52 #define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT)
54 int xfs_syncd_init(struct xfs_mount
*mp
);
55 void xfs_syncd_stop(struct xfs_mount
*mp
);
57 int xfs_sync(struct xfs_mount
*mp
, int flags
);
58 int xfs_syncsub(struct xfs_mount
*mp
, int flags
, int *bypassed
);
60 void xfs_flush_inode(struct xfs_inode
*ip
);
61 void xfs_flush_device(struct xfs_inode
*ip
);