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null_blk: Delete nullb.{queue_depth, nr_queues} 

Since commit 8b631f9cf0 ("null_blk: remove the bio based I/O path"),
struct nullb members queue_depth and nr_queues are only ever written, so
delete them.

With that, null_exit_hctx() can also be deleted.

Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240222083420.6026-1-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
John Garry 2024-02-22 08:34:20 +00:00 committed by Jens Axboe
parent 4068550870
commit 0f225f8787
2 changed files with 0 additions and 13 deletions
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11
drivers/block/null_blk/main.c
View File

@ -1620,14 +1620,6 @@ static void null_queue_rqs(struct request **rqlist)
*rqlist = requeue_list;
}
static void null_exit_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx)
{
struct nullb_queue *nq = hctx->driver_data;
struct nullb *nullb = nq->dev->nullb;
nullb->nr_queues--;
}
static void null_init_queue(struct nullb *nullb, struct nullb_queue *nq)
{
nq->dev = nullb->dev;
@ -1647,7 +1639,6 @@ static int null_init_hctx(struct blk_mq_hw_ctx *hctx, void *driver_data,
nq = &nullb->queues[hctx_idx];
hctx->driver_data = nq;
null_init_queue(nullb, nq);
nullb->nr_queues++;
return 0;
}
@ -1660,7 +1651,6 @@ static const struct blk_mq_ops null_mq_ops = {
.poll = null_poll,
.map_queues = null_map_queues,
.init_hctx = null_init_hctx,
.exit_hctx = null_exit_hctx,
};
static void null_del_dev(struct nullb *nullb)
@ -1731,7 +1721,6 @@ static int setup_queues(struct nullb *nullb)
if (!nullb->queues)
return -ENOMEM;
nullb->queue_depth = nullb->dev->hw_queue_depth;
return 0;
}

2
drivers/block/null_blk/null_blk.h
View File

@ -114,14 +114,12 @@ struct nullb {
struct gendisk *disk;
struct blk_mq_tag_set *tag_set;
struct blk_mq_tag_set __tag_set;
unsigned int queue_depth;
atomic_long_t cur_bytes;
struct hrtimer bw_timer;
unsigned long cache_flush_pos;
spinlock_t lock;
struct nullb_queue *queues;
unsigned int nr_queues;
char disk_name[DISK_NAME_LEN];
};