From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mel Gorman Subject: [PATCH 04/10] vmscan: Synchronous lumpy reclaim should not call congestion_wait() Date: Mon, 6 Sep 2010 11:47:27 +0100 Message-ID: <1283770053-18833-5-git-send-email-mel@csn.ul.ie> References: <1283770053-18833-1-git-send-email-mel@csn.ul.ie> Cc: Linux Kernel List , Rik van Riel , Johannes Weiner , Minchan Kim , Wu Fengguang , Andrea Arcangeli , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Dave Chinner , Chris Mason , Christoph Hellwig , Andrew Morton , Mel Gorman To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Return-path: In-Reply-To: <1283770053-18833-1-git-send-email-mel@csn.ul.ie> Sender: owner-linux-mm@kvack.org List-Id: linux-fsdevel.vger.kernel.org From: KOSAKI Motohiro congestion_wait() mean "waiting 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 Signed-off-by: Mel Gorman --- mm/vmscan.c | 2 -- 1 files changed, 0 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index eabe987..5979850 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1341,8 +1341,6 @@ 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)) { - wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10); - /* * The attempt at page out may have made some * of the pages active, mark them inactive again. -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org