From: Wanpeng Li <liwp@linux.vnet.ibm.com>
Date: Thu, 14 Jun 2012 12:41:02 +0000 (+0800)
Subject: mm: fix page reclaim comment error
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=be7bd59db71dfb6dc011c9880fec5a659430003a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

mm: fix page reclaim comment error

Since there are five lists in LRU cache, the array nr in get_scan_count
should be:

nr[0] = anon inactive pages to scan; nr[1] = anon active pages to scan
nr[2] = file inactive pages to scan; nr[3] = file active pages to scan

Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 33dc256033b5..091ab8f88333 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1894,7 +1894,8 @@ static int vmscan_swappiness(struct mem_cgroup_zone *mz,
  * by looking at the fraction of the pages scanned we did rotate back
  * onto the active list instead of evict.
  *
- * nr[0] = anon pages to scan; nr[1] = file pages to scan
+ * nr[0] = anon inactive pages to scan; nr[1] = anon active pages to scan
+ * nr[2] = file inactive pages to scan; nr[3] = file active pages to scan
  */
 static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
 			   unsigned long *nr, int priority)