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| author | Hillf Danton <dhillf@gmail.com> | 2011-12-19 17:11:57 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-06 14:13:55 -0800 |
| commit | 4875f39a0548a1fa5f55b4a90dca0f4a7ad8f237 (patch) | |
| tree | 0904055a723946e36bb9bab6dad25055b99417a5 /mm | |
| parent | a37fd0740a9d2b261dc3d7781e3f3923f9076bb1 (diff) | |
| download | lwn-4875f39a0548a1fa5f55b4a90dca0f4a7ad8f237.tar.gz lwn-4875f39a0548a1fa5f55b4a90dca0f4a7ad8f237.zip | |
memcg: keep root group unchanged if creation fails
commit a41c58a6665cc995e237303b05db42100b71b65e upstream.
If the request is to create non-root group and we fail to meet it, we
should leave the root unchanged.
Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 59ac5d6de478..d99217b322aa 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4963,9 +4963,9 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont) int cpu; enable_swap_cgroup(); parent = NULL; - root_mem_cgroup = mem; if (mem_cgroup_soft_limit_tree_init()) goto free_out; + root_mem_cgroup = mem; for_each_possible_cpu(cpu) { struct memcg_stock_pcp *stock = &per_cpu(memcg_stock, cpu); @@ -5004,7 +5004,6 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont) return &mem->css; free_out: __mem_cgroup_free(mem); - root_mem_cgroup = NULL; return ERR_PTR(error); } |