[PATCH 02/27] mm, vmscan: Check if cpusets are enabled during direct reclaim

Mel Gorman
2016-02-23T15:15:00Z

Direct reclaim obeys cpusets but misses the cpusets_enabled() check.
The overhead is unlikely to be measurable in the direct reclaim
path which is expensive but there is no harm is doing it.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
---
mm/vmscan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 86eb21491867..de8d6226e026 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2566,7 +2566,7 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
* to global LRU.
*/
if (global_reclaim(sc)) {
- if (!cpuset_zone_allowed(zone,
+ if (cpusets_enabled() && !cpuset_zone_allowed(zone,
GFP_KERNEL | __GFP_HARDWALL))
continue;

--
2.6.4