From: Bart Van Assche <Bart.VanAssche@sandisk.com>
To: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"asutoshd@codeaurora.org" <asutoshd@codeaurora.org>
Cc: "linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>
Subject: Re: [ufs]: [scsi]: BUG: spinlock recursion on CPU#4
Date: Mon, 5 Jun 2017 15:23:00 +0000 [thread overview]
Message-ID: <1496676179.2623.3.camel@sandisk.com> (raw)
In-Reply-To: <94899e9e-abd3-5e70-838a-5a4659a9483e@codeaurora.org>
On Mon, 2017-06-05 at 12:16 +0530, Asutosh Das (asd) wrote:
> It's on 4.4 and its an Android kernel.
>
> No - I haven't tried it out yet. I could get some clues from the
> call-stack itself, like I explained before. I can try these configs
> though. While I do that, I'd like to know your thoughts on my analysis.
> Do you think with the current data, it makes sense?
Hello Asutosh,
If your analysis is correct then I think the easiest solution will be to switch
to scsi-mq. The scsi-mq .queue_rq function is called without the host lock held
and hence there is no need to unlock the host lock from inside the queue_rq
function.
Bart.
next prev parent reply other threads:[~2017-06-05 15:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bd79226b-833c-f53b-f92a-0c4ebffeb1ee@codeaurora.org>
2017-06-01 14:02 ` [ufs]: [scsi]: BUG: spinlock recursion on CPU#4 Bart Van Assche
2017-06-05 6:46 ` Asutosh Das (asd)
2017-06-05 15:23 ` Bart Van Assche [this message]
2017-06-01 6:58 Asutosh Das (asd)
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