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To: Damien Le Moal <damien.lemoal@wdc.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
        Bart Van Assche <bart.vanassche@wdc.com>,
        "James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
        linux-scsi@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
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        Brian King <brking@linux.vnet.ibm.com>,
        Abdul Haleem <abdhalee@linux.vnet.ibm.com>,
        stable@vger.kernel.org
Subject: Re: [PATCH] Revert "scsi-mq: Always unprepare before requeuing a request"
From: "Martin K. Petersen" <martin.petersen@oracle.com>
References: <20170816174324.29276-1-bart.vanassche@wdc.com>
        <yq1fucrqchu.fsf@oracle.com>
        <a757a93a-0052-e22f-b035-b8cc27256dc5@wdc.com>
        <3401ef29-7450-eb15-9dd1-2f021354286d@wdc.com>
Date: Wed, 16 Aug 2017 20:52:55 -0400
In-Reply-To: <3401ef29-7450-eb15-9dd1-2f021354286d@wdc.com> (Damien Le Moal's
        message of "Thu, 17 Aug 2017 09:45:44 +0900")
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Damien,

> Actually, we can keep that commit as it makes the sq case cleaner
> anyway. But we need something else to prevent deadlock in the mq
> case...

OK, put it back.

Please send a lockout patch. We can always zap it if we find out what
went wrong with Bart's patch and queue a "real" fix.

-- 
Martin K. Petersen	Oracle Linux Engineering