CRED: Restore const to current_cred()

Commit 3295514 ("fix rcu annotations noise in cred.h") accidentally dropped the const of current->cred inside current_cred() by the insertion of a cast to deal with an RCU annotation loss warning from sparce. Use an appropriate RCU wrapper instead so as not to lose the const. Signed-off-by: David Howells <[email protected]> Reviewed-by: Paul E. McKenney <[email protected]> cc: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
pageman · Aug 8, 2011 · 27e4e43 · 27e4e43
1 parent 322a8b0
commit 27e4e43
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/linux/cred.h b/include/linux/cred.h
@@ -269,7 +269,7 @@ static inline void put_cred(const struct cred *_cred)
  * since nobody else can modify it.
  */
 #define current_cred() \
-	(*(__force struct cred **)&current->cred)
+	rcu_dereference_protected(current->cred, 1)
 
 /**
  * __task_cred - Access a task's objective credentials