tree 3da37edba537ca5860eae97f47fb1204bc5a55b3
parent 9d7fef74b23fe57803c5f71fab11630d9ec2cb4b
author Dave Chinner <david@fromorbit.com> 1239036294 +0200
committer Christoph Hellwig <hch@brick.lst.de> 1239036294 +0200

xfs: use xfs_sync_inodes() for device flushing

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>