From c6a8a8c589b53f90854a07db3b5806ce111e826b Mon Sep 17 00:00:00 2001 From: KOSAKI Motohiro Date: Mon, 9 Aug 2010 17:19:14 -0700 Subject: 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 Acked-by: Rik van Riel Reviewed-by: Minchan Kim Acked-by: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmscan.c | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-) (limited to 'mm/vmscan.c') diff --git a/mm/vmscan.c b/mm/vmscan.c index 5b594d62ca0..6dafa45d79e 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; -- cgit v1.2.3-70-g09d2