David Chinner | a167b17 | 2008-10-30 17:06:18 +1100 | [diff] [blame^] | 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 | */ |
David Chinner | fe4fa4b | 2008-10-30 17:06:08 +1100 | [diff] [blame] | 18 | #ifndef XFS_SYNC_H |
| 19 | #define XFS_SYNC_H 1 |
| 20 | |
David Chinner | a167b17 | 2008-10-30 17:06:18 +1100 | [diff] [blame^] | 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) |
| 52 | #define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT) |
| 53 | |
| 54 | int xfs_syncd_init(struct xfs_mount *mp); |
| 55 | void xfs_syncd_stop(struct xfs_mount *mp); |
| 56 | |
David Chinner | fe4fa4b | 2008-10-30 17:06:08 +1100 | [diff] [blame] | 57 | int xfs_sync(struct xfs_mount *mp, int flags); |
| 58 | int xfs_syncsub(struct xfs_mount *mp, int flags, int *bypassed); |
| 59 | |
David Chinner | a167b17 | 2008-10-30 17:06:18 +1100 | [diff] [blame^] | 60 | void xfs_flush_inode(struct xfs_inode *ip); |
| 61 | void xfs_flush_device(struct xfs_inode *ip); |
| 62 | |
David Chinner | fe4fa4b | 2008-10-30 17:06:08 +1100 | [diff] [blame] | 63 | #endif |