[PATCH] xfs: use proper interfaces for on-stack plugging

[Alex Elder]

On Wed, 2011-03-30 at 07:05 -0400, Christoph Hellwig wrote:
> Add proper blk_start_plug/blk_finish_plug pairs for the two places where
> we issue buffer I/O, and remove the blk_flush_plug in xfs_buf_lock and
> xfs_buf_iowait, given that context switches already flush the per-process
> plugging lists.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Looks good.

Reviewed-by: Alex Elder <aelder at sgi.com>