The commit is pushed to "branch-rh7-3.10.0-693.1.1.vz7.37.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-693.1.1.vz7.37.21
------>
commit f8168436b4eb925096fe7f14bfc18b0789aa6b3c
Author: Pavel Tikhomirov <ptikhomi...@virtuozzo.com>
Date: Tue Nov 7 12:06:19 2017 +0300
ve/cgroup: remove rcu_read_lock from cgroup_get_ve_root
It is likely a leftover from __cgroup_path where it protects cgrp->name
in cgroup_get_ve_root there is nothing rcu_dereferenced, also in
cgroup_is_descendant there is no rcu for cgrp->parent.
https://jira.sw.ru/browse/PSBM-69678
Signed-off-by: Pavel Tikhomirov <ptikhomi...@virtuozzo.com>
Reviewed-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
---
kernel/cgroup.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index f960c34..06863de 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4284,7 +4284,6 @@ static struct cgroup *cgroup_get_ve_root(struct cgroup
*cgrp)
{
struct cgroup *ve_root = NULL;
- rcu_read_lock();
do {
if (test_bit(CGRP_VE_ROOT, &cgrp->flags)) {
ve_root = cgrp;
@@ -4292,7 +4291,6 @@ static struct cgroup *cgroup_get_ve_root(struct cgroup
*cgrp)
}
cgrp = cgrp->parent;
} while (cgrp);
- rcu_read_unlock();
return ve_root;
}
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