rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check

[platform/adaptation/renesas_rcar/renesas_kernel.git] / include / linux / cgroup.h

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 5ac7ebc..da7e4bc 100644 (file)
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -467,12 +467,14 @@ struct cgroup_subsys {
        int (*pre_destroy)(struct cgroup_subsys *ss, struct cgroup *cgrp);
        void (*destroy)(struct cgroup_subsys *ss, struct cgroup *cgrp);
        int (*can_attach)(struct cgroup_subsys *ss, struct cgroup *cgrp,
-                         struct task_struct *tsk, bool threadgroup);
+                         struct task_struct *tsk);
+       int (*can_attach_task)(struct cgroup *cgrp, struct task_struct *tsk);
        void (*cancel_attach)(struct cgroup_subsys *ss, struct cgroup *cgrp,
-                         struct task_struct *tsk, bool threadgroup);
+                             struct task_struct *tsk);
+       void (*pre_attach)(struct cgroup *cgrp);
+       void (*attach_task)(struct cgroup *cgrp, struct task_struct *tsk);
        void (*attach)(struct cgroup_subsys *ss, struct cgroup *cgrp,
-                       struct cgroup *old_cgrp, struct task_struct *tsk,
-                       bool threadgroup);
+                      struct cgroup *old_cgrp, struct task_struct *tsk);
        void (*fork)(struct cgroup_subsys *ss, struct task_struct *task);
        void (*exit)(struct cgroup_subsys *ss, struct cgroup *cgrp,
                        struct cgroup *old_cgrp, struct task_struct *task);
@@ -537,7 +539,6 @@ static inline struct cgroup_subsys_state *cgroup_subsys_state(
  */
 #define task_subsys_state_check(task, subsys_id, __c)                  \
        rcu_dereference_check(task->cgroups->subsys[subsys_id],         \
-                             rcu_read_lock_held() ||                   \
                              lockdep_is_held(&task->alloc_lock) ||     \
                              cgroup_lock_is_held() || (__c))
 
@@ -553,9 +554,6 @@ static inline struct cgroup* task_cgroup(struct task_struct *task,
        return task_subsys_state(task, subsys_id)->cgroup;
 }
 
-int cgroup_clone(struct task_struct *tsk, struct cgroup_subsys *ss,
-                                                       char *nodename);
-
 /* A cgroup_iter should be treated as an opaque object */
 struct cgroup_iter {
        struct list_head *cg_link;