From a705a34a565a5445bf731bd8006d51ea4d2b4236 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Sun, 29 May 2011 13:02:58 +0100 Subject: [PATCH] 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 Signed-off-by: Alasdair G Kergon --- drivers/md/dm-kcopyd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c index 1bb73a1..505b6f5 100644 --- a/drivers/md/dm-kcopyd.c +++ b/drivers/md/dm-kcopyd.c @@ -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 { -- 2.7.4