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Commit 043bcbe5 authored by Hugh Dickins's avatar Hugh Dickins Committed by Linus Torvalds
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mm: test PageSwapBacked in lumpy reclaim 



Lumpy reclaim does well to stop at a PageAnon when there's no swap, but
better is to stop at any PageSwapBacked, which includes shmem/tmpfs too.

Signed-off-by: default avatarHugh Dickins <hughd@google.com>
Reviewed-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: default avatarMinchan Kim <minchan@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent faed836a

mm/vmscan.c

+1 −1
Original line number Diff line number Diff line
@@ -1166,7 +1166,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, 
			 * anon page which don't already have a swap slot is

			 * pointless.

			 */

			if (nr_swap_pages <= 0 && PageAnon(cursor_page) &&

			if (nr_swap_pages <= 0 && PageSwapBacked(cursor_page) &&

			    !PageSwapCache(cursor_page))

				break;