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]>
goeke · Aug 11, 2010 · b8f5c56 · b8f5c56
1 parent f75ca96
commit b8f5c56
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/mm/vmscan.c b/mm/vmscan.c
@@ -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,