blk-mq: get rid of ->cmd_size in the hardware queue

We store it in the tag set, we don't need it in the hardware queue.
While removing cmd_size, place ->queue_num further down to avoid
a hole on 64-bit archs. It's not used in any fast paths, so we
can safely move it.

Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 1a41d7aefbd5..cbd2a55d69b8 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1615,7 +1615,6 @@ static int blk_mq_init_hctx(struct request_queue *q,
         hctx->queue = q;
         hctx->queue_num = hctx_idx;
         hctx->flags = set->flags;
-        hctx->cmd_size = set->cmd_size;
 
         blk_mq_init_cpu_notifier(&hctx->cpu_notifier,
                                         blk_mq_hctx_notify, hctx);