diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-06-17 02:33:24 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-17 06:47:46 +0400 |
| commit | ee993b135ec75a93bd5c45e636bb210d2975159b (patch) | |
| tree | edc7ca495c20b0ecd9c78ce22dad121c01459511 | |
| parent | 24cf72518c79cdcda486ed26074ff8151291cf65 (diff) | |
| download | linux-ee993b135ec75a93bd5c45e636bb210d2975159b.tar.xz | |
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>
| -rw-r--r-- | mm/vmscan.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 3018ad756133..4139aa52b941 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -929,18 +929,10 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, /* Check that we have not crossed a zone boundary. */ if (unlikely(page_zone_id(cursor_page) != zone_id)) continue; - switch (__isolate_lru_page(cursor_page, mode, file)) { - case 0: + if (__isolate_lru_page(cursor_page, mode, file) == 0) { list_move(&cursor_page->lru, dst); nr_taken++; scan++; - break; - - case -EBUSY: - /* else it is being freed elsewhere */ - list_move(&cursor_page->lru, src); - default: - break; /* ! on LRU or wrong list */ } } } |