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| author | Jens Axboe <axboe@fb.com> | 2015-01-07 10:44:04 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-01-07 10:44:04 -0700 |
| commit | 17ded320706c6316376059cfbe9dccab32c62b42 (patch) | |
| tree | 86301826f0fe57700c97828bf9fc2657c11c0c4e | |
| parent | 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 (diff) | |
| download | linux-17ded320706c6316376059cfbe9dccab32c62b42.tar.gz linux-17ded320706c6316376059cfbe9dccab32c62b42.tar.bz2 linux-17ded320706c6316376059cfbe9dccab32c62b42.zip | |
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>
| -rw-r--r-- | block/blk-mq.c | 1 | ||||
| -rw-r--r-- | include/linux/blk-mq.h | 3 |
2 files changed, 1 insertions, 3 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); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 3b43f509432c..d0de259e92b2 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -34,7 +34,6 @@ struct blk_mq_hw_ctx { unsigned long flags; /* BLK_MQ_F_* flags */ struct request_queue *queue; - unsigned int queue_num; struct blk_flush_queue *fq; void *driver_data; @@ -54,7 +53,7 @@ struct blk_mq_hw_ctx { unsigned long dispatched[BLK_MQ_MAX_DISPATCH_ORDER]; unsigned int numa_node; - unsigned int cmd_size; /* per-request extra data */ + unsigned int queue_num; atomic_t nr_active; |