memcg: sc.nr_to_reclaim should be initialized

Currently, mem_cgroup_shrink_node_zone() initialize sc.nr_to_reclaim as 0.
 It mean shrink_zone() only scan 32 pages and immediately return even if
it doesn't reclaim any pages.

This patch fixes it.

Signed-off-by: KOSAKI Motohiro <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Nishimura Daisuke <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KOSAKI Motohiro 2010-08-10 18:03:02 -07:00 • committed by Linus Torvalds
commit b8f5c5664d

View file

@ -1972,6 +1972,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
struct zone *zone, int nid)
{
struct scan_control sc = {
.nr_to_reclaim = SWAP_CLUSTER_MAX,
.may_writepage = !laptop_mode,
.may_unmap = 1,
.may_swap = !noswap,