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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2009-06-23 08:57:55 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-23 10:17:28 -0700
commitcb4cbcf6b3cf79f80c157afdc8dd8221643d8481 (patch)
treea328516967ad0daeff9702a2cf5760fb25fd26a7
parentd888a4c76c51092993643f8992bf55b3c28da483 (diff)
downloadvexpress-lsk-cb4cbcf6b3cf79f80c157afdc8dd8221643d8481.tar.gz
mm: fix incorrect page removal from LRU
The isolated page is "cursor_page" not "page". This could cause LRU list corruption under memory pressure, caught by CONFIG_DEBUG_LIST. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Balbir Singh <balbir@linux.vnet.ibm.com> Tested-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/vmscan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index e8fa2d9eb21..54155268dfc 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -932,7 +932,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
continue;
if (__isolate_lru_page(cursor_page, mode, file) == 0) {
list_move(&cursor_page->lru, dst);
- mem_cgroup_del_lru(page);
+ mem_cgroup_del_lru(cursor_page);
nr_taken++;
scan++;
}