Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 1dce071e authored by Shaohua Li's avatar Shaohua Li Committed by Linus Torvalds
Browse files

vmscan: avoid setting zone congested if no page dirty 



nr_dirty and nr_congested are increased only when the page is dirty.  So
if all pages are clean, both them will be zero.  In this case, we should
not mark the zone congested.

Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
Reviewed-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Reviewed-by: default avatarMinchan Kim <minchan.kim@gmail.com>
Acked-by: default avatarMel Gorman <mel@csn.ul.ie>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 38715258

mm/vmscan.c

+1 −1
Original line number Diff line number Diff line
@@ -913,7 +913,7 @@ keep_lumpy: 
	 * back off and wait for congestion to clear because further reclaim

	 * will encounter the same problem

	 */

	if (nr_dirty == nr_congested)

	if (nr_dirty == nr_congested && nr_dirty != 0)

		zone_set_flag(zone, ZONE_CONGESTED);



	free_page_list(&free_pages);