6.1-stable review patch. If anyone has any objections, please let me know.
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From: Ming Lei ming.lei@redhat.com
commit 9c7c4bc986932218fd0df9d2a100509772028fb1 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: 71f28f3136af ("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 --- drivers/block/ublk_drv.c | 3 --- 1 file changed, 3 deletions(-)
--- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -1223,9 +1223,6 @@ static int __ublk_ch_uring_cmd(struct io __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;