[PATCH 33/42] block: convert rq_data_dir helper to use REQ_OPs

[mchristi@xxxxxxxxxx]

From: Mike Christie <mchristi@xxxxxxxxxx>

The request->op field is now always setup up with a REQ_OP.
This patch has the rq_data_dir helper convert the operation
to a WRITE or READ direction based on that.

Signed-off-by: Mike Christie <mchristi@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
---
 include/linux/blkdev.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 42711ef..5694894 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -598,7 +598,7 @@ static inline void queue_flag_clear(unsigned int flag, 
struct request_queue *q)
 
 #define list_entry_rq(ptr)     list_entry((ptr), struct request, queuelist)
 
-#define rq_data_dir(rq)                ((int)((rq)->cmd_flags & 1))
+#define rq_data_dir(rq)                (op_is_write(rq->op) ? WRITE : READ)
 
 /*
  * Driver can handle struct request, if it either has an old style
-- 
2.7.2