diff options
| author | Ying Han <yinghan@google.com> | 2011-05-26 16:25:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-26 17:12:35 -0700 |
| commit | d149e3b25d7c5f33de9aa866303926fa53535aa7 (patch) | |
| tree | 160c8c3136246921458c96ab8257381d702208aa /mm/vmscan.c | |
| parent | 0ae5e89c60c9eb87da36a2614836bc434b0ec2ad (diff) | |
| download | lwn-d149e3b25d7c5f33de9aa866303926fa53535aa7.tar.gz lwn-d149e3b25d7c5f33de9aa866303926fa53535aa7.zip | |
memcg: add the soft_limit reclaim in global direct reclaim.
We recently added the change in global background reclaim which counts the
return value of soft_limit reclaim. Now this patch adds the similar logic
on global direct reclaim.
We should skip scanning global LRU on shrink_zone if soft_limit reclaim
does enough work. This is the first step where we start with counting the
nr_scanned and nr_reclaimed from soft_limit reclaim into global
scan_control.
Signed-off-by: Ying Han <yinghan@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 9ce6ec84328e..884ae08c16cc 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1977,11 +1977,14 @@ restart: * If a zone is deemed to be full of pinned pages then just give it a light * scan then give up on it. */ -static void shrink_zones(int priority, struct zonelist *zonelist, +static unsigned long shrink_zones(int priority, struct zonelist *zonelist, struct scan_control *sc) { struct zoneref *z; struct zone *zone; + unsigned long nr_soft_reclaimed; + unsigned long nr_soft_scanned; + unsigned long total_scanned = 0; for_each_zone_zonelist_nodemask(zone, z, zonelist, gfp_zone(sc->gfp_mask), sc->nodemask) { @@ -1998,8 +2001,17 @@ static void shrink_zones(int priority, struct zonelist *zonelist, continue; /* Let kswapd poll it */ } + nr_soft_scanned = 0; + nr_soft_reclaimed = mem_cgroup_soft_limit_reclaim(zone, + sc->order, sc->gfp_mask, + &nr_soft_scanned); + sc->nr_reclaimed += nr_soft_reclaimed; + total_scanned += nr_soft_scanned; + shrink_zone(priority, zone, sc); } + + return total_scanned; } static bool zone_reclaimable(struct zone *zone) @@ -2064,7 +2076,7 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist, sc->nr_scanned = 0; if (!priority) disable_swap_token(); - shrink_zones(priority, zonelist, sc); + total_scanned += shrink_zones(priority, zonelist, sc); /* * Don't shrink slabs when reclaiming memory from * over limit cgroups |