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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2017-09-04 09:22:54 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-09-04 09:22:54 -0700
commita6cbfa1e6d38c4b3ab0ce7e3aea4bb4e744f24b8 (patch)
tree8960e571a398b5d32e72bdb9c89ce965daa870ab /kernel/cgroup/cgroup.c
parentf5308d1b83eba20e69df5e0926ba7257c8dd9074 (diff)
parent08d6ac9ee5fedd82040bc878705981b67a116a3f (diff)
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Merge branch 'next' into for-linus
Prepare input updates for 4.14 merge window.
Diffstat (limited to 'kernel/cgroup/cgroup.c')
-rw-r--r--kernel/cgroup/cgroup.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index c3c9a0e1b3c9..8d4e85eae42c 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -4265,6 +4265,11 @@ static void kill_css(struct cgroup_subsys_state *css)
{
lockdep_assert_held(&cgroup_mutex);
+ if (css->flags & CSS_DYING)
+ return;
+
+ css->flags |= CSS_DYING;
+
/*
* This must happen before css is disassociated with its cgroup.
* See seq_css() for details.