path: root/mm
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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2010-10-26 14:21:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 16:52:07 -0700
commitbc57e00f5e0b2480ef222c775c49552d3a930db7 (patch)
tree51aa33378602a41fb73b9b2fbee2ca04706aa9d6 /mm
parent52bb9198668968506f9d12bf35d7f5d3f094921e (diff)
vmscan: synchronous lumpy reclaim should not call congestion_wait()
congestion_wait() means "wait until queue congestion is cleared". However, synchronous lumpy reclaim does not need this congestion_wait() as shrink_page_list(PAGEOUT_IO_SYNC) uses wait_on_page_writeback() and it provides the necessary waiting. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Reviewed-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 4a6dccb5758..399d54e8a82 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1340,8 +1340,6 @@ shrink_inactive_list(unsigned long nr_to_scan, struct zone *zone,
/* Check if we should syncronously wait for writeback */
if (should_reclaim_stall(nr_taken, nr_reclaimed, priority, sc)) {
- congestion_wait(BLK_RW_ASYNC, HZ/10);
* The attempt at page out may have made some
* of the pages active, mark them inactive again.