diff options
| author | Vladimir Davydov <vdavydov@parallels.com> | 2014-01-23 15:53:05 -0800 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-09-28 15:14:28 +0200 |
| commit | 3c24bbc144755b300e75d802d3cabc882e78c729 (patch) | |
| tree | cb7c5cbbebd461bc3169e4401ded36a194ee5b6b | |
| parent | 10a7418a0eb5461c03d4ba6cb4059a8112ba3c6a (diff) | |
slab: do not panic if we fail to create memcg cache
There is no point in flooding logs with warnings or especially crashing
the system if we fail to create a cache for a memcg. In this case we
will be accounting the memcg allocation to the root cgroup until we
succeed to create its own cache, but it isn't that critical.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: W4TCH0UT <ateekujjawal@gmail.com>
| -rw-r--r-- | mm/slab_common.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c index 28e439faa..0bd29f70b 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -222,7 +222,14 @@ out_unlock: mutex_unlock(&slab_mutex); put_online_cpus(); - if (err) { + /* + * There is no point in flooding logs with warnings or especially + * crashing the system if we fail to create a cache for a memcg. In + * this case we will be accounting the memcg allocation to the root + * cgroup until we succeed to create its own cache, but it isn't that + * critical. + */ + if (err && !memcg) { if (flags & SLAB_PANIC) panic("kmem_cache_create: Failed to create slab '%s'. Error %d\n", name, err); |