From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx171.postini.com [74.125.245.171]) by kanga.kvack.org (Postfix) with SMTP id DC9036B0062 for ; Wed, 12 Dec 2012 16:44:36 -0500 (EST) From: Johannes Weiner Subject: [patch 1/8] mm: memcg: only evict file pages when we have plenty Date: Wed, 12 Dec 2012 16:43:33 -0500 Message-Id: <1355348620-9382-2-git-send-email-hannes@cmpxchg.org> In-Reply-To: <1355348620-9382-1-git-send-email-hannes@cmpxchg.org> References: <1355348620-9382-1-git-send-email-hannes@cmpxchg.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Rik van Riel , Michal Hocko , Mel Gorman , Hugh Dickins , linux-mm@kvack.org, linux-kernel@vger.kernel.org dc0422c "mm: vmscan: only evict file pages when we have plenty" makes a point of not going for anonymous memory while there is still enough inactive cache around. The check was added only for global reclaim, but it is just as useful for memory cgroup reclaim. Signed-off-by: Johannes Weiner --- mm/vmscan.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 157bb11..3874dcb 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1671,6 +1671,16 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc, denominator = 1; goto out; } + /* + * There is enough inactive page cache, do not reclaim + * anything from the anonymous working set right now. + */ + if (!inactive_file_is_low(lruvec)) { + fraction[0] = 0; + fraction[1] = 1; + denominator = 1; + goto out; + } anon = get_lru_size(lruvec, LRU_ACTIVE_ANON) + get_lru_size(lruvec, LRU_INACTIVE_ANON); @@ -1688,15 +1698,6 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc, fraction[1] = 0; denominator = 1; goto out; - } else if (!inactive_file_is_low_global(zone)) { - /* - * There is enough inactive page cache, do not - * reclaim anything from the working set right now. - */ - fraction[0] = 0; - fraction[1] = 1; - denominator = 1; - goto out; } } -- 1.7.11.7 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org