Messages in this thread | | | Subject | Re: [PATCH for-next 1/1] null_blk: force complete for timeout request | From | Jens Axboe <> | Date | Fri, 29 May 2020 11:42:21 -0600 |
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On 5/29/20 11:31 AM, Dongli Zhang wrote: > The commit 7b11eab041da ("blk-mq: blk-mq: provide forced completion > method") exports new API to force a request to complete without error > injection. > > There should be no error injection when completing a request by timeout > handler. > > Otherwise, the below would hang because timeout handler is failed. > > echo 100 > /sys/kernel/debug/fail_io_timeout/probability > echo 1000 > /sys/kernel/debug/fail_io_timeout/times > echo 1 > /sys/block/nullb0/io-timeout-fail > dd if=/dev/zero of=/dev/nullb0 bs=512 count=1 oflag=direct > > With this patch, the timeout handler is able to complete the IO.
Applied, thanks.
-- Jens Axboe
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