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authorKonstantin Khlebnikov <khlebnikov@openvz.org>2012-05-29 15:06:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-29 16:22:26 -0700
commit3d58ab5c97fa2d145050242137ac39ca7d3bc2fc (patch)
treee9d11fc9ababf9eafcb54cc60facd793eeafaf74 /mm/vmscan.c
parent748dad36d645f5c4517a115d60bb3a0e8f877ac0 (diff)
downloadlinux-3d58ab5c97fa2d145050242137ac39ca7d3bc2fc.tar.bz2
mm/memcg: use vm_swappiness from target memory cgroup
Use vm_swappiness from memory cgroup which is triggered this memory reclaim. This is more reasonable and allows to kill one argument. [akpm@linux-foundation.org: fix build (patch skew)] Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujtisu.com> Cc: Hugh Dickins <hughd@google.com> Cc: Glauber Costa <glommer@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Minchan Kim <minchan@kernel.org> 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.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index c94d17d75d73..0e2131deb2d3 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1622,12 +1622,11 @@ static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan,
return shrink_inactive_list(nr_to_scan, mz, sc, priority, lru);
}
-static int vmscan_swappiness(struct mem_cgroup_zone *mz,
- struct scan_control *sc)
+static int vmscan_swappiness(struct scan_control *sc)
{
if (global_reclaim(sc))
return vm_swappiness;
- return mem_cgroup_swappiness(mz->mem_cgroup);
+ return mem_cgroup_swappiness(sc->target_mem_cgroup);
}
/*
@@ -1695,8 +1694,8 @@ static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
* With swappiness at 100, anonymous and file have the same priority.
* This scanning priority is essentially the inverse of IO cost.
*/
- anon_prio = vmscan_swappiness(mz, sc);
- file_prio = 200 - vmscan_swappiness(mz, sc);
+ anon_prio = vmscan_swappiness(sc);
+ file_prio = 200 - vmscan_swappiness(sc);
/*
* OK, so we have swap space and a fair amount of page cache
@@ -1741,7 +1740,7 @@ out:
unsigned long scan;
scan = zone_nr_lru_pages(mz, lru);
- if (priority || noswap || !vmscan_swappiness(mz, sc)) {
+ if (priority || noswap || !vmscan_swappiness(sc)) {
scan >>= priority;
if (!scan && force_scan)
scan = SWAP_CLUSTER_MAX;