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From:   Sitsofe Wheeler <sitsofe@gmail.com>
Date:   Mon, 2 Apr 2018 22:02:13 +0100
Message-ID: <CALjAwxj1urPPNadmkmhLngHvYcfhh8d+_vPstPDQHXLiGL0oTw@mail.gmail.com>
Subject: Re: [BISECTED][REGRESSION] Hang while booting EeePC 900
To:     Tejun Heo <tj@kernel.org>
Cc:     Jens Axboe <axboe@kernel.dk>, linux-kernel@vger.kernel.org,
        linux-block@vger.kernel.org,
        Stefan Haberland <sth@linux.vnet.ibm.com>,
        Jan Hoeppner <hoeppner@linux.vnet.ibm.com>,
        Bart Van Assche <Bart.VanAssche@wdc.com>
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Hi Tejun,

On 2 April 2018 at 21:29, Tejun Heo <tj@kernel.org> wrote:
>
> Can you see whether the following patch makes any difference?
>
> Thanks.
>
> diff --git a/block/blk-timeout.c b/block/blk-timeout.c
> index a05e367..f0e6e41 100644
> --- a/block/blk-timeout.c
> +++ b/block/blk-timeout.c
> @@ -165,7 +165,7 @@ void blk_abort_request(struct request *req)
>                  * No need for fancy synchronizations.
>                  */
>                 blk_rq_set_deadline(req, jiffies);
> -               mod_timer(&req->q->timeout, 0);
> +               kblockd_schedule_work(&req->q->timeout_work);
>         } else {
>                 if (blk_mark_rq_complete(req))
>                         return;

That patch seems to fix the issue.

-- 
Sitsofe | http://sucs.org/~sits/