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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-02-22 17:04:50 -0800
committerIngo Molnar <mingo@elte.hu>2010-02-25 10:34:26 +0100
commitd11c563dd20ff35da5652c3e1c989d9e10e1d6d0 (patch)
treeb189f50de7a01d7603935d4da7e755d764dfe67e /include/linux/cred.h
parenta898def29e4119bc01ebe7ca97423181f4c0ea2d (diff)
downloadlinux-d11c563dd20ff35da5652c3e1c989d9e10e1d6d0.tar.gz
sched: Use lockdep-based checking on rcu_dereference()
Update the rcu_dereference() usages to take advantage of the new lockdep-based checking. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com LKML-Reference: <1266887105-1528-6-git-send-email-paulmck@linux.vnet.ibm.com> [ -v2: fix allmodconfig missing symbol export build failure on x86 ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/cred.h')
-rw-r--r--include/linux/cred.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 4e3387a89cb..4db09f89b63 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -280,7 +280,7 @@ static inline void put_cred(const struct cred *_cred)
* task or by holding tasklist_lock to prevent it from being unlinked.
*/
#define __task_cred(task) \
- ((const struct cred *)(rcu_dereference((task)->real_cred)))
+ ((const struct cred *)(rcu_dereference_check((task)->real_cred, rcu_read_lock_held() || lockdep_is_held(&tasklist_lock))))
/**
* get_task_cred - Get another task's objective credentials