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ublk: remove unnecessary ubq checks

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ublk_init_queues() ensures that all nr_hw_queues queues are initialized,
with each ublk_queue's q_id set to its index. And ublk_init_queues() is
called before ublk_add_chdev(), which creates the cdev. Is is therefore
impossible for the !ubq || ub_cmd->q_id != ubq->q_id condition to hit in
__ublk_ch_uring_cmd(). Remove it to avoids some branches in the I/O path.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Uday Shankar <ushankar@purestorage.com>
Link: https://lore.kernel.org/r/20250416170154.3621609-1-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Caleb Sander Mateos 2025-04-16 11:01:53 -06:00 committed by Jens Axboe
parent 98b995660b
commit 4c7d3c88c7
1 changed files with 0 additions and 3 deletions
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3
drivers/block/ublk_drv.c
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@ -2035,9 +2035,6 @@ static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
goto out;
ubq = ublk_get_queue(ub, ub_cmd->q_id);
if (!ubq || ub_cmd->q_id != ubq->q_id)
goto out;
if (ubq->ubq_daemon && ubq->ubq_daemon != current)
goto out;