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SubjectRe: [PATCH v7 1/2] loop: Report EOPNOTSUPP properly
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On 11/14/19 3:50 PM, Evan Green wrote:
> diff --git a/drivers/block/loop.c b/drivers/block/loop.c
> index ef6e251857c8..6a9fe1f9fe84 100644
> --- a/drivers/block/loop.c
> +++ b/drivers/block/loop.c
> @@ -461,7 +461,7 @@ static void lo_complete_rq(struct request *rq)
> if (!cmd->use_aio || cmd->ret < 0 || cmd->ret == blk_rq_bytes(rq) ||
> req_op(rq) != REQ_OP_READ) {
> if (cmd->ret < 0)
> - ret = BLK_STS_IOERR;
> + ret = errno_to_blk_status(cmd->ret);
> goto end_io;
> }
>
> @@ -1950,7 +1950,10 @@ static void loop_handle_cmd(struct loop_cmd *cmd)
> failed:
> /* complete non-aio request */
> if (!cmd->use_aio || ret) {
> - cmd->ret = ret ? -EIO : 0;
> + if (ret == -EOPNOTSUPP)
> + cmd->ret = ret;
> + else
> + cmd->ret = ret ? -EIO : 0;
> blk_mq_complete_request(rq);
> }
> }

Reviewed-by: Bart Van Assche <bvanassche@acm.org>

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