diff options
| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2010-01-15 17:01:18 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-22 15:18:12 -0800 |
| commit | c91ab0438c6700e4be078d64cfb01879986e3bde (patch) | |
| tree | 81249cc818c5af7904d0ebc6eefd683666973969 | |
| parent | d4c893f20758ff549e4aaa4a02a79e563deaebb9 (diff) | |
page allocator: update NR_FREE_PAGES only when necessary
commit 6ccf80eb15ccaca4d3f1ab5162b9ded5eecd9971 upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | mm/page_alloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 2bc2ac63f41e..3a78e2e864e8 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1225,10 +1225,10 @@ 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); |