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| author |   Vladimir Davydov <vdavydov@parallels.com> | 2015-02-12 14:58:54 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-12 18:54:09 -0800 |
| commit | cb731d6c62bbc2f890b08ea3d0386d5dad887326 (patch) | |
| tree | 1c597a1018d8258585aa65b3c4872a9c5d177d46 /mm/memory-failure.c | |
| parent | fs: consolidate {nr,free}_cached_objects args in shrink_control (diff) | |
| download | wireguard-linux-cb731d6c62bbc2f890b08ea3d0386d5dad887326.tar.xz wireguard-linux-cb731d6c62bbc2f890b08ea3d0386d5dad887326.zip | |
vmscan: per memory cgroup slab shrinkers
This patch adds SHRINKER_MEMCG_AWARE flag. If a shrinker has this flag
set, it will be called per memory cgroup. The memory cgroup to scan
objects from is passed in shrink_control->memcg. If the memory cgroup
is NULL, a memcg aware shrinker is supposed to scan objects from the
global list. Unaware shrinkers are only called on global pressure with
memcg=NULL.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Greg Thelen <gthelen@google.com>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index feb803bf3443..1a735fad2a13 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -242,15 +242,8 @@ void shake_page(struct page *p, int access) * Only call shrink_node_slabs here (which would also shrink * other caches) if access is not potentially fatal. */ - if (access) { - int nr; - int nid = page_to_nid(p); - do { - nr = shrink_node_slabs(GFP_KERNEL, nid, 1000, 1000); - if (page_count(p) == 1) - break; - } while (nr > 10); - } + if (access) + drop_slab_node(page_to_nid(p)); } EXPORT_SYMBOL_GPL(shake_page); |