diff options
| author | Caleb Sander Mateos <csander@purestorage.com> | 2025-09-17 19:49:41 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-09-20 06:36:27 -0600 |
| commit | 5125535f90564117506d926d0de92c4c2622b720 (patch) | |
| tree | c269252f9530eba99085799142e898585e69b141 | |
| parent | d74a383ec70de33ae6577af889556747d6693269 (diff) | |
ublk: don't dereference ublk_queue in ublk_ch_uring_cmd_local()
For ublk servers with many ublk queues, accessing the ublk_queue to
handle a ublk command is a frequent cache miss. Get the queue depth from
the ublk_device instead, which is accessed just before.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/block/ublk_drv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index 04b8613ce623..58f688eac742 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -2333,7 +2333,7 @@ static int ublk_ch_uring_cmd_local(struct io_uring_cmd *cmd, ubq = ublk_get_queue(ub, q_id); - if (tag >= ubq->q_depth) + if (tag >= ub->dev_info.queue_depth) goto out; io = &ubq->ios[tag]; |