Commit a705a34a authored May 29, 2011 by Mikulas Patocka Committed by Alasdair G Kergon May 29, 2011

dm kcopyd: avoid pointless job splitting



Don't split SUB_JOB_SIZE jobs

If the job size equals SUB_JOB_SIZE, there is no point in splitting it.
Splitting it just unnecessarily wastes time, because the split job size
is SUB_JOB_SIZE too.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

parent 6f13f6fb

drivers/md/dm-kcopyd.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -578,7 +578,7 @@ int dm_kcopyd_copy(struct dm_kcopyd_client kc, struct dm_io_region from,
		job->fn = fn;
		job->context = context;

		if (job->source.count < SUB_JOB_SIZE)
		if (job->source.count <= SUB_JOB_SIZE)
		dispatch_job(job);

		else {

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