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Commit 00d8089c authored by Rik van Riel's avatar Rik van Riel Committed by Linus Torvalds
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vmscan: fix get_scan_ratio() comment 



Fix the old comment on the scan ratio calculations.

Signed-off-by: default avatarRik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8e324c19

mm/vmscan.c

+3 −3
Original line number Diff line number Diff line
@@ -1389,9 +1389,9 @@ static void get_scan_ratio(struct zone *zone, struct scan_control *sc, 
	file_prio = 200 - sc->swappiness;



	/*

	 *                  anon       recent_rotated[0]

	 * %anon = 100 * ----------- / ----------------- * IO cost

	 *               anon + file      rotate_sum

	 * The amount of pressure on anon vs file pages is inversely

	 * proportional to the fraction of recently scanned pages on

	 * each list that were recently referenced and in active use.

	 */

	ap = (anon_prio + 1) * (zone->recent_scanned[0] + 1);

	ap /= zone->recent_rotated[0] + 1;