diff options
| author | Christoph Hellwig <hch@lst.de> | 2014-04-14 10:30:07 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-04-15 14:03:02 -0600 |
| commit | 9d74e25737d73e93ccddeb5a61bcd56b7b8eb57b (patch) | |
| tree | c36c53290f8b5ed7f1ae9a89b534a9c3155c0491 /drivers/block/null_blk.c | |
| parent | 742ee69b92d9559e968f70cf0a49157866f8fbef (diff) | |
| download | blackbird-op-linux-9d74e25737d73e93ccddeb5a61bcd56b7b8eb57b.tar.gz blackbird-op-linux-9d74e25737d73e93ccddeb5a61bcd56b7b8eb57b.zip | |
blk-mq: do not initialize req->special
Drivers can reach their private data easily using the blk_mq_rq_to_pdu
helper and don't need req->special. By not initializing it code can
be simplified nicely, and we also shave off a few more instructions from
the I/O path.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/null_blk.c')
| -rw-r--r-- | drivers/block/null_blk.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index 091b9ea14feb..71df69d90900 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -226,7 +226,7 @@ static void null_cmd_end_timer(struct nullb_cmd *cmd) static void null_softirq_done_fn(struct request *rq) { - end_cmd(rq->special); + end_cmd(blk_mq_rq_to_pdu(rq)); } static inline void null_handle_cmd(struct nullb_cmd *cmd) @@ -311,7 +311,7 @@ static void null_request_fn(struct request_queue *q) static int null_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *rq) { - struct nullb_cmd *cmd = rq->special; + struct nullb_cmd *cmd = blk_mq_rq_to_pdu(rq); cmd->rq = rq; cmd->nq = hctx->driver_data; |
