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mm: fix page reclaim comment error

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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>
This commit is contained in:
Wanpeng Li 2012-06-14 20:41:02 +08:00 committed by Jiri Kosina
parent 422aa27420
commit be7bd59db7
1 changed files with 2 additions and 1 deletions
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3
mm/vmscan.c
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@ -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)