cgroup: make css_set_rwsem a spinlock and rename it to css_set_lock

[cascardo/linux.git] / include / linux / cgroup.h

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index a9dcf0e..4602073 100644 (file)
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -13,7 +13,6 @@
 #include <linux/nodemask.h>
 #include <linux/rculist.h>
 #include <linux/cgroupstats.h>
-#include <linux/rwsem.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
 #include <linux/kernfs.h>
@@ -367,11 +366,11 @@ static inline void css_put_many(struct cgroup_subsys_state *css, unsigned int n)
  */
 #ifdef CONFIG_PROVE_RCU
 extern struct mutex cgroup_mutex;
-extern struct rw_semaphore css_set_rwsem;
+extern spinlock_t css_set_lock;
 #define task_css_set_check(task, __c)                                  \
        rcu_dereference_check((task)->cgroups,                          \
                lockdep_is_held(&cgroup_mutex) ||                       \
-               lockdep_is_held(&css_set_rwsem) ||                      \
+               lockdep_is_held(&css_set_lock) ||                       \
                ((task)->flags & PF_EXITING) || (__c))
 #else
 #define task_css_set_check(task, __c)                                  \