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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2010-08-10 00:19:14 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-10 03:44:59 (GMT)
commitc6a8a8c589b53f90854a07db3b5806ce111e826b (patch)
treec806b2f0d8f6f5b315f94daf864999b273d9530f /mm/vmscan.c
parentb00d3ea7cfe44e177ad5cd8141209d46478a7a51 (diff)
vmscan: recalculate lru_pages on each priority
shrink_zones() need relatively long time and lru_pages can change dramatically during shrink_zones(). So lru_pages should be recalculated for each priority. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Rik van Riel <riel@redhat.com> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r--mm/vmscan.c21
1 files changed, 8 insertions, 13 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 5b594d6..6dafa45 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1787,7 +1787,6 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
bool all_unreclaimable;
unsigned long total_scanned = 0;
struct reclaim_state *reclaim_state = current->reclaim_state;
- unsigned long lru_pages = 0;
struct zoneref *z;
struct zone *zone;
enum zone_type high_zoneidx = gfp_zone(sc->gfp_mask);
@@ -1798,18 +1797,6 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
if (scanning_global_lru(sc))
count_vm_event(ALLOCSTALL);
- /*
- * mem_cgroup will not do shrink_slab.
- */
- if (scanning_global_lru(sc)) {
- for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
-
- if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL))
- continue;
-
- lru_pages += zone_reclaimable_pages(zone);
- }
- }
for (priority = DEF_PRIORITY; priority >= 0; priority--) {
sc->nr_scanned = 0;
@@ -1821,6 +1808,14 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
* over limit cgroups
*/
if (scanning_global_lru(sc)) {
+ unsigned long lru_pages = 0;
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
+ if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL))
+ continue;
+
+ lru_pages += zone_reclaimable_pages(zone);
+ }
+
shrink_slab(sc->nr_scanned, sc->gfp_mask, lru_pages);
if (reclaim_state) {
sc->nr_reclaimed += reclaim_state->reclaimed_slab;

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