From: Wanpeng Li <liwp.linux@gmail.com>
To: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>, Minchan Kim <minchan@kernel.org>,
linux-kernel@vger.kernel.org, trivial@kernel.org,
Gavin Shan <shangw@linux.vnet.ibm.com>,
Wanpeng Li <liwp.linux@gmail.com>
Subject: [PATCH] mm: fix page relaim comment error
Date: Thu, 14 Jun 2012 20:36:48 +0800 [thread overview]
Message-ID: <1339677408-25253-1-git-send-email-liwp.linux@gmail.com> (raw)
From: Wanpeng Li <liwp@linux.vnet.ibm.com>
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>
---
mm/vmscan.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index eeb3bc9..ed823df 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1567,7 +1567,8 @@ static int vmscan_swappiness(struct scan_control *sc)
* 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 lruvec *lruvec, struct scan_control *sc,
unsigned long *nr)
--
1.7.9.5
--
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reply other threads:[~2012-06-14 12:37 UTC|newest]
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