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[dm-devel] [PATCH] Don't split SUB_JOB_SIZE jobs



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>

---
 drivers/md/dm-kcopyd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.39-rc7-fast/drivers/md/dm-kcopyd.c
===================================================================
--- linux-2.6.39-rc7-fast.orig/drivers/md/dm-kcopyd.c	2011-05-18 18:20:42.000000000 +0200
+++ linux-2.6.39-rc7-fast/drivers/md/dm-kcopyd.c	2011-05-18 18:20:52.000000000 +0200
@@ -577,7 +577,7 @@ int dm_kcopyd_copy(struct dm_kcopyd_clie
 	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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