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xfs: use xfs_sync_inodes() for device flushing

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Currently xfs_device_flush calls sync_blockdev() which is
a no-op for XFS as all it's metadata is held in a different
address to the one sync_blockdev() works on.

Call xfs_sync_inodes() instead to flush all the delayed
allocation blocks out. To do this as efficiently as possible,
do it via two passes - one to do an async flush of all the
dirty blocks and a second to wait for all the IO to complete.
This requires some modification to the xfs-sync_inodes_ag()
flush code to do efficiently.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Dave Chinner
2009-04-06 18:44:54 +02:00
committed by Christoph Hellwig
parent 9d7fef74b2
commit a8d770d987
5 changed files with 38 additions and 30 deletions
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2
fs/xfs/xfs_mount.h
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@ -313,7 +313,7 @@ typedef struct xfs_mount {
#endif
struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
struct task_struct *m_sync_task; /* generalised sync thread */
bhv_vfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
xfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
struct list_head m_sync_list; /* sync thread work item list */
spinlock_t m_sync_lock; /* work item list lock */
int m_sync_seq; /* sync thread generation no. */