From: Christoph Hellwig <hch@infradead.org>
To: Hans de Goede <hdegoede@redhat.com>
Cc: SCSI development list <linux-scsi@vger.kernel.org>,
Douglas Gilbert <dgilbert@interlog.com>
Subject: Re: uas breakage when using scsi_mod.blk_mq=Y
Date: Wed, 1 Oct 2014 10:31:05 -0700 [thread overview]
Message-ID: <20141001173105.GA4193@infradead.org> (raw)
In-Reply-To: <542C2366.30700@redhat.com>
On Wed, Oct 01, 2014 at 05:53:10PM +0200, Hans de Goede wrote:
> So let me see if I understand this correctly, blk-mq will never queue
> more then qdepth commands, but it will use higher tag numbers ?
Correct.
> If that is the case fixing this should be easy, uas already has
> an array to map stream-ids to scsi cmnds so that when it gets a status
> urb, it can find the scsi cmnd which belongs to that status urb. We
> can just search for a free slot in that array.
That sounds good.
prev parent reply other threads:[~2014-10-01 17:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-01 8:17 uas breakage when using scsi_mod.blk_mq=Y Hans de Goede
2014-10-01 12:45 ` Christoph Hellwig
2014-10-01 15:53 ` Hans de Goede
2014-10-01 17:31 ` Christoph Hellwig [this message]
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