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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2010-01-15 17:01:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-16 16:53:55 -0800
commit6ccf80eb15ccaca4d3f1ab5162b9ded5eecd9971 (patch)
tree23dad05636e88a743755bfd3e7a5dad4ef5e49e0 /mm/page_alloc.c
parent1f0b8b95543118f97197a978560438c1ce88cd00 (diff)
downloadconfigs-6ccf80eb15ccaca4d3f1ab5162b9ded5eecd9971.tar.gz
page allocator: update NR_FREE_PAGES only when necessary
commit f2260e6b (page allocator: update NR_FREE_PAGES only as necessary) made one minor regression. if __rmqueue() was failed, NR_FREE_PAGES stat go wrong. this patch fixes it. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Reported-by: Huang Shijie <shijie8@gmail.com> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6ea4966a633..d2a8889b4c5 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1222,10 +1222,10 @@ again:
}
spin_lock_irqsave(&zone->lock, flags);
page = __rmqueue(zone, order, migratetype);
- __mod_zone_page_state(zone, NR_FREE_PAGES, -(1 << order));
spin_unlock(&zone->lock);
if (!page)
goto failed;
+ __mod_zone_page_state(zone, NR_FREE_PAGES, -(1 << order));
}
__count_zone_vm_events(PGALLOC, zone, 1 << order);