Commit 949d49ec authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Mike Snitzer
Browse files

dm kcopyd: use __GFP_HIGHMEM when allocating pages 



dm-kcopyd doesn't access the allocated pages directly, it only passes
them to dm-io which adds them to a bio list - thus, we can allocate
the pages from high memory. This will reduce pressure on the low
memory when there are a large number of kcopyd jobs in progress.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
parent ca7dc242

drivers/md/dm-kcopyd.c

+1 −1
Original line number Diff line number Diff line
@@ -219,7 +219,7 @@ static struct page_list *alloc_pl(gfp_t gfp) 
	if (!pl)

		return NULL;



	pl->page = alloc_page(gfp);

	pl->page = alloc_page(gfp | __GFP_HIGHMEM);

	if (!pl->page) {

		kfree(pl);

		return NULL;