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| H A D | dm-snap-persistent.c | diff 239c8dd533e74de4a7f3c85c4f9f430eb08867c1 Thu Jan 13 13:59:59 CST 2011 Tejun Heo <tj@kernel.org> dm snapshot: persistent make metadata_wq multithreaded
metadata_wq serves on-stack work items from chunk_io(). Even if
multiple chunk_io() are simultaneously in progress, each is
independent and queued only once, so multithreaded workqueue can be
safely used.
Switch metadata_wq to multithread and flush the work item instead of
the workqueue in chunk_io().
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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