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authorShaohua Li <shaohua.li@intel.com>2011-11-01 04:08:02 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-01 04:30:47 +0400
commit16fb951237c2b0b28037b992ee44e7ee401c30d1 (patch)
tree756ba52239d304d8f45deb102f17960f0a8517ec /mm
parent49ea7eb65e7c5060807fb9312b1ad4c3eab82e2c (diff)
downloadlinux-16fb951237c2b0b28037b992ee44e7ee401c30d1.tar.xz
vmscan: count pages into balanced for zone with good watermark
It's possible a zone watermark is ok when entering the balance_pgdat() loop, while the zone is within the requested classzone_idx. Count pages from this zone into `balanced'. In this way, we can skip shrinking zones too much for high order allocation. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Acked-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/vmscan.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a297603d35bc..77ee24fc891a 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2748,6 +2748,8 @@ out:
/* If balanced, clear the congested flag */
zone_clear_flag(zone, ZONE_CONGESTED);
+ if (i <= *classzone_idx)
+ balanced += zone->present_pages;
}
}