rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check

[can-eth-gw-linux.git] / kernel / cgroup.c

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 2731d115d725c0a216f06d18cd60367eab4210da..5ae71d6e274bf4174179b7dd1c6a97e89732d428 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1697,7 +1697,6 @@ int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen)
 {
        char *start;
        struct dentry *dentry = rcu_dereference_check(cgrp->dentry,
-                                                     rcu_read_lock_held() ||
                                                      cgroup_lock_is_held());
 
        if (!dentry || cgrp == dummytop) {
@@ -1723,7 +1722,6 @@ int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen)
                        break;
 
                dentry = rcu_dereference_check(cgrp->dentry,
-                                              rcu_read_lock_held() ||
                                               cgroup_lock_is_held());
                if (!cgrp->parent)
                        continue;
@@ -4813,8 +4811,7 @@ unsigned short css_id(struct cgroup_subsys_state *css)
         * on this or this is under rcu_read_lock(). Once css->id is allocated,
         * it's unchanged until freed.
         */
-       cssid = rcu_dereference_check(css->id,
-                       rcu_read_lock_held() || atomic_read(&css->refcnt));
+       cssid = rcu_dereference_check(css->id, atomic_read(&css->refcnt));
 
        if (cssid)
                return cssid->id;
@@ -4826,8 +4823,7 @@ unsigned short css_depth(struct cgroup_subsys_state *css)
 {
        struct css_id *cssid;
 
-       cssid = rcu_dereference_check(css->id,
-                       rcu_read_lock_held() || atomic_read(&css->refcnt));
+       cssid = rcu_dereference_check(css->id, atomic_read(&css->refcnt));
 
        if (cssid)
                return cssid->depth;