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