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Commit a705a34a authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Alasdair G Kergon
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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: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 6f13f6fb

drivers/md/dm-kcopyd.c

+1 −1
Original line number Original line 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->fn = fn;

	job->context = context;

	job->context = context;





	if (job->source.count < SUB_JOB_SIZE)

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

		dispatch_job(job);

		dispatch_job(job);





	else {

	else {