diff options
| author | Michal Hocko <mhocko@suse.cz> | 2011-07-08 16:39:41 +0400 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-07-09 00:21:58 +0400 |
| commit | d8bf4ca9ca9576548628344c9725edd3786e90b1 (patch) | |
| tree | df338f50a5af6bc3651bd863b79fa91e6b1e9e20 /include/linux | |
| parent | eb032b9837a958e21ca000358a5bde5e17192ddb (diff) | |
| download | linux-d8bf4ca9ca9576548628344c9725edd3786e90b1.tar.xz | |
rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check
Since ca5ecddf (rcu: define __rcu address space modifier for sparse)
rcu_dereference_check use rcu_read_lock_held as a part of condition
automatically so callers do not have to do that as well.
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cgroup.h | 1 | ||||
| -rw-r--r-- | include/linux/cred.h | 1 | ||||
| -rw-r--r-- | include/linux/fdtable.h | 1 | ||||
| -rw-r--r-- | include/linux/rtnetlink.h | 3 |
4 files changed, 1 insertions, 5 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index ab4ac0ccb857..da7e4bc34e8c 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -539,7 +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)) diff --git a/include/linux/cred.h b/include/linux/cred.h index 82607992f308..f240f2fa0197 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -284,7 +284,6 @@ static inline void put_cred(const struct cred *_cred) ({ \ const struct task_struct *__t = (task); \ rcu_dereference_check(__t->real_cred, \ - rcu_read_lock_held() || \ task_is_dead(__t)); \ }) diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h index 133c0ba25e30..df7e3cf82e97 100644 --- a/include/linux/fdtable.h +++ b/include/linux/fdtable.h @@ -60,7 +60,6 @@ struct files_struct { #define rcu_dereference_check_fdtable(files, fdtfd) \ (rcu_dereference_check((fdtfd), \ - rcu_read_lock_held() || \ lockdep_is_held(&(files)->file_lock) || \ atomic_read(&(files)->count) == 1 || \ rcu_my_thread_group_empty())) diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index bbad657a3725..27576aa05e8c 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -758,8 +758,7 @@ extern int lockdep_rtnl_is_held(void); * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference() */ #define rcu_dereference_rtnl(p) \ - rcu_dereference_check(p, rcu_read_lock_held() || \ - lockdep_rtnl_is_held()) + rcu_dereference_check(p, lockdep_rtnl_is_held()) /** * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL |