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vmscan: synchronous lumpy reclaim should not call congestion_wait()

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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 <[email protected]>
Signed-off-by: Mel Gorman <[email protected]>
Reviewed-by: Minchan Kim <[email protected]>
Reviewed-by: Johannes Weiner <[email protected]>
Reviewed-by: Wu Fengguang <[email protected]>
Reviewed-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: Rik van Riel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KOSAKI Motohiro 2010-10-26 14:21:41 -07:00 • committed by Linus Torvalds
commit bc57e00f5e
1 changed files with 0 additions and 2 deletions
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mm/vmscan.c
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@ -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.