X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fblkdev.h;h=1171abd7eb173d215210663e32fbc800985e1272;hb=681a561b7ec7fdcd8f35b68e44ac6d6c70aecc04;hp=d17032c347c07e8bd25b2f14f34c8ed98aa83a6d;hpb=2a4aa30c5f967eb6ae874c67fa6fceeee84815f9;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index d17032c347c..1171abd7eb1 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -215,8 +215,9 @@ struct request {
 	/*
 	 * when request is used as a packet command carrier
 	 */
-	unsigned int cmd_len;
-	unsigned char cmd[BLK_MAX_CDB];
+	unsigned short cmd_len;
+	unsigned char __cmd[BLK_MAX_CDB];
+	unsigned char *cmd;
 
 	unsigned int data_len;
 	unsigned int extra_len;	/* length of alignment and padding */
@@ -407,6 +408,17 @@ struct request_queue
 #define QUEUE_FLAG_PLUGGED	7	/* queue is plugged */
 #define QUEUE_FLAG_ELVSWITCH	8	/* don't use elevator, just do FIFO */
 #define QUEUE_FLAG_BIDI		9	/* queue supports bidi requests */
+#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)
@@ -416,7 +428,7 @@ static inline void queue_flag_set_unlocked(unsigned int flag,
 
 static inline void queue_flag_set(unsigned int flag, struct request_queue *q)
 {
-	WARN_ON_ONCE(!spin_is_locked(q->queue_lock));
+	WARN_ON_ONCE(!queue_is_locked(q));
 	__set_bit(flag, &q->queue_flags);
 }
 
@@ -428,7 +440,7 @@ static inline void queue_flag_clear_unlocked(unsigned int flag,
 
 static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
 {
-	WARN_ON_ONCE(!spin_is_locked(q->queue_lock));
+	WARN_ON_ONCE(!queue_is_locked(q));
 	__clear_bit(flag, &q->queue_flags);
 }
 
@@ -475,6 +487,7 @@ enum {
 #define blk_queue_plugged(q)	test_bit(QUEUE_FLAG_PLUGGED, &(q)->queue_flags)
 #define blk_queue_tagged(q)	test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags)
 #define blk_queue_stopped(q)	test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
+#define blk_queue_nomerges(q)	test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
 #define blk_queue_flushing(q)	((q)->ordseq)
 
 #define blk_fs_request(rq)	((rq)->cmd_type == REQ_TYPE_FS)
@@ -610,7 +623,6 @@ extern void generic_make_request(struct bio *bio);
 extern void blk_rq_init(struct request_queue *q, struct request *rq);
 extern void blk_put_request(struct request *);
 extern void __blk_put_request(struct request_queue *, struct request *);
-extern void blk_end_sync_rq(struct request *rq, int error);
 extern struct request *blk_get_request(struct request_queue *, int, gfp_t);
 extern void blk_insert_request(struct request_queue *, struct request *, int, void *);
 extern void blk_requeue_request(struct request_queue *, struct request *);