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    Subject[PATCH 33/42] block: convert rq_data_dir helper to use REQ_OPs
    Date
    From: Mike Christie <mchristi@redhat.com>

    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@redhat.com>
    Reviewed-by: Christoph Hellwig <hch@lst.de>
    Reviewed-by: Hannes Reinecke <hare@suse.com>
    ---
    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
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