block: kill rq->data

Now that all block request data transfer is done via bio, rq->data
isn't used.  Kill it.

While at it, make the roles of rq->special and buffer clear.

[ Impact: drop now unncessary field from struct request ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Boaz Harrosh <bharrosh@panasas.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 756ac7c93de0..aa9fc572e45f 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1088,7 +1088,6 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
                         return ret;
         } else {
                 BUG_ON(req->data_len);
-                BUG_ON(req->data);
 
                 memset(&cmd->sdb, 0, sizeof(cmd->sdb));
                 req->buffer = NULL;