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Date:   Thu, 28 Mar 2019 18:48:46 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Johannes Thumshirn <jthumshirn@suse.de>
Cc:     Linux Block Layer Mailinglist <linux-block@vger.kernel.org>,
        Hannes Reinecke <hare@suse.de>,
        Bart Van Assche <bvanassche@acm.org>,
        Christoph Hellwig <hch@lst.de>, Jan Kara <jack@suse.cz>,
        Linux FSDEVEL Mailinglist <linux-fsdevel@vger.kernel.org>,
        Jens Axboe <axboe@kernel.dk>, lkp@01.org,
        Ming Lei <ming.lei@redhat.com>
Subject: Re: [block] 4e366a7962: blktests.nvme.005.fail
Message-ID: <20190328174846.GA22610@lst.de>
References: <20190325010409.GB6379@shao2-debian> <bb98759a-2b51-9785-d903-282ca1ed91cb@suse.de>
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On Thu, Mar 28, 2019 at 05:31:29PM +0100, Johannes Thumshirn wrote:
> In all cases I could reproduce it I had nsegs == 2 and
> rq->nr_phys_segments == 1 (rq->bio->bi_phys_segments == 1).

And all cases are pass through as well?

Can you check if this still shows up with the series from Ming which
switches the passthrough requests to use multi-page biovecs aswell
and gets rid of the hairy code you quote below.

From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Christoph Hellwig <hch@lst.de>
To: lkp@lists.01.org
Subject: Re: [block] 4e366a7962: blktests.nvme.005.fail
Date: Thu, 28 Mar 2019 18:48:46 +0100
Message-ID: <20190328174846.GA22610@lst.de>
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On Thu, Mar 28, 2019 at 05:31:29PM +0100, Johannes Thumshirn wrote:
> In all cases I could reproduce it I had nsegs =3D=3D 2 and
> rq->nr_phys_segments =3D=3D 1 (rq->bio->bi_phys_segments =3D=3D 1).

And all cases are pass through as well?

Can you check if this still shows up with the series from Ming which
switches the passthrough requests to use multi-page biovecs aswell
and gets rid of the hairy code you quote below.

--===============4001819237883750514==--