+#define QUEUE_FLAG_NOMERGES 10 /* disable merge attempts */
+
+static inline int queue_is_locked(struct request_queue *q)
+{
+#ifdef CONFIG_SMP
+ spinlock_t *lock = q->queue_lock;
+ return lock && spin_is_locked(lock);
+#else
+ return 1;
+#endif
+}
+
+static inline void queue_flag_set_unlocked(unsigned int flag,
+ struct request_queue *q)
+{
+ __set_bit(flag, &q->queue_flags);
+}
+
+static inline void queue_flag_set(unsigned int flag, struct request_queue *q)
+{
+ WARN_ON_ONCE(!queue_is_locked(q));
+ __set_bit(flag, &q->queue_flags);
+}
+
+static inline void queue_flag_clear_unlocked(unsigned int flag,
+ struct request_queue *q)
+{
+ __clear_bit(flag, &q->queue_flags);
+}
+
+static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
+{
+ WARN_ON_ONCE(!queue_is_locked(q));
+ __clear_bit(flag, &q->queue_flags);
+}