[PATCH] fix NMI lockup with CFQ scheduler
[linux-3.10.git] / include / linux / blkdev.h
index 70ac2860a605342199b4d68c2215154eb2921645..ef1afc178c0a2df9569daf3312e33911a0e89bf2 100644 (file)
@@ -355,8 +355,11 @@ struct request_queue
        unsigned long           queue_flags;
 
        /*
-        * protects queue structures from reentrancy
+        * protects queue structures from reentrancy. ->__queue_lock should
+        * _never_ be used directly, it is queue private. always use
+        * ->queue_lock.
         */
+       spinlock_t              __queue_lock;
        spinlock_t              *queue_lock;
 
        /*