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ublk: remove check IO_URING_F_SQE128 in ublk_ch_uring_cmd

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commit 9c7c4bc986 upstream.

sizeof(struct ublksrv_io_cmd) is 16bytes, which can be held in 64byte SQE,
so not necessary to check IO_URING_F_SQE128.

With this change, we get chance to save half SQ ring memory.

Fixed: 71f28f3136 ("ublk_drv: add io_uring based userspace block driver")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20230220041413.1524335-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ming Lei
2023-02-20 12:14:13 +08:00
committed by Greg Kroah-Hartman
parent f016326d31
commit b7803afc77
1 changed files with 0 additions and 3 deletions
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3
drivers/block/ublk_drv.c
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@@ -1223,9 +1223,6 @@ static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
__func__, cmd->cmd_op, ub_cmd->q_id, tag,
ub_cmd->result);
if (!(issue_flags & IO_URING_F_SQE128))
goto out;
if (ub_cmd->q_id >= ub->dev_info.nr_hw_queues)
goto out;