diff options
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_sync.h')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_sync.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index f4c3b1ea64c..3746d153ec8 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -1,7 +1,63 @@ +/* + * Copyright (c) 2000-2006 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ #ifndef XFS_SYNC_H #define XFS_SYNC_H 1 +struct xfs_mount; + +typedef struct bhv_vfs_sync_work { + struct list_head w_list; + struct xfs_mount *w_mount; + void *w_data; /* syncer routine argument */ + void (*w_syncer)(struct xfs_mount *, void *); +} bhv_vfs_sync_work_t; + +#define SYNC_ATTR 0x0001 /* sync attributes */ +#define SYNC_CLOSE 0x0002 /* close file system down */ +#define SYNC_DELWRI 0x0004 /* look at delayed writes */ +#define SYNC_WAIT 0x0008 /* wait for i/o to complete */ +#define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */ +#define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */ +#define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */ +#define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */ +#define SYNC_IOWAIT 0x0100 /* wait for all I/O to complete */ + +/* + * When remounting a filesystem read-only or freezing the filesystem, + * we have two phases to execute. This first phase is syncing the data + * before we quiesce the fielsystem, and the second is flushing all the + * inodes out after we've waited for all the transactions created by + * the first phase to complete. The second phase uses SYNC_INODE_QUIESCE + * to ensure that the inodes are written to their location on disk + * rather than just existing in transactions in the log. This means + * after a quiesce there is no log replay required to write the inodes + * to disk (this is the main difference between a sync and a quiesce). + */ +#define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT) +#define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT) + +int xfs_syncd_init(struct xfs_mount *mp); +void xfs_syncd_stop(struct xfs_mount *mp); + int xfs_sync(struct xfs_mount *mp, int flags); int xfs_syncsub(struct xfs_mount *mp, int flags, int *bypassed); +void xfs_flush_inode(struct xfs_inode *ip); +void xfs_flush_device(struct xfs_inode *ip); + #endif |