nbd: don't start request if nbd_queue_rq() failed
mainline inclusion from mainline-next-20211018 commit a83fdc85365586dc5c0f3ff91680e18e37a66f19 category: bugfix bugzilla: 49890 CVE: NA --------------------------- commit 6a468d59 ("nbd: don't start req until after the dead connection logic") move blk_mq_start_request() from nbd_queue_rq() to nbd_handle_cmd() to skip starting request if the connection is dead. However, request is still started in other error paths. Currently, blk_mq_end_request() will be called immediately if nbd_queue_rq() failed, thus start request in such situation is useless. So remove blk_mq_start_request() from error paths in nbd_handle_cmd(). Signed-off-by:Yu Kuai <yukuai3@huawei.com> Reviewed-by:
Ming Lei <ming.lei@redhat.com> Reviewed-by:
Josef Bacik <josef@toxicpanda.com> Link: https://lore.kernel.org/r/20210916093350.1410403-5-yukuai3@huawei.com Signed-off-by:
Jens Axboe <axboe@kernel.dk> Reviewed-by:
Jason Yan <yanaijie@huawei.com> Signed-off-by:
Yang Yingliang <yangyingliang@huawei.com>
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