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authorDavid Chinner <david@fromorbit.com>2008-10-30 17:06:18 +1100
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 17:06:18 +1100
commita167b17e899a930758506bbc18748078d6fd8c89 (patch)
tree698f8efbe5085ae75e0b46e1b71c7bfc7186d3b2 /fs/xfs/linux-2.6/xfs_sync.h
parentfe4fa4b8e463fa5848ef9e86ed75d27501d0da1e (diff)
[XFS] move xfssyncd code to xfs_sync.c
Move all the xfssyncd code to the new xfs_sync.c file. This places it closer to the actual code that it interacts with, rather than just being associated with high level VFS code. SGI-PV: 988139 SGI-Modid: xfs-linux-melb:xfs-kern:32283a Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_sync.h')
-rw-r--r--fs/xfs/linux-2.6/xfs_sync.h56
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