mm: fix lumpy reclaim lru handling at isolate_lru_pages
authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Tue, 16 Jun 2009 22:33:24 +0000 (15:33 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 17 Jun 2009 02:47:46 +0000 (19:47 -0700)
commitee993b135ec75a93bd5c45e636bb210d2975159b
treeedc7ca495c20b0ecd9c78ce22dad121c01459511
parent24cf72518c79cdcda486ed26074ff8151291cf65
mm: fix lumpy reclaim lru handling at isolate_lru_pages

At lumpy reclaim, a page failed to be taken by __isolate_lru_page() can be
pushed back to "src" list by list_move().  But the page may not be from
"src" list.  This pushes the page back to wrong LRU.  And list_move()
itself is unnecessary because the page is not on top of LRU.  Then, leave
it as it is if __isolate_lru_page() fails.

Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/vmscan.c