Date: Sat, 8 Aug 2015 14:35:21 +0200
From: Christoph Hellwig <hch@lst.de>
To: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Ming Lin <mlin@kernel.org>, Christoph Hellwig <hch@lst.de>,
        Mike Snitzer <snitzer@redhat.com>, lkml <linux-kernel@vger.kernel.org>,
        Jens Axboe <axboe@kernel.dk>, Dongsu Park <dpark@posteo.net>,
        Christoph Hellwig <hch@infradead.org>,
        Al Viro <viro@zeniv.linux.org.uk>, Ming Lei <ming.lei@canonical.com>,
        Neil Brown <neilb@suse.de>, Alasdair Kergon <agk@redhat.com>,
        dm-devel@redhat.com, Lars Ellenberg <drbd-dev@lists.linbit.com>,
        drbd-user@lists.linbit.com, Jiri Kosina <jkosina@suse.cz>,
        Geoff Levand <geoff@infradead.org>, Jim Paris <jim@jtan.com>,
        Philip Kelleher <pjk1939@linux.vnet.ibm.com>,
        Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
        Oleg Drokin <oleg.drokin@intel.com>,
        Andreas Dilger <andreas.dilger@intel.com>,
        Ming Lin <ming.l@ssi.samsung.com>
Subject: Re: [PATCH v5 01/11] block: make generic_make_request handle
	arbitrarily sized bios
Message-ID: <20150808123521.GA8216@lst.de>
References: <1438412290.26596.14.camel@hasee> <20150801163356.GA21478@redhat.com> <1438581502.26596.24.camel@hasee> <20150804113626.GA12682@lst.de> <1438754604.29731.31.camel@hasee> <20150807073001.GA17485@lst.de> <1438990806.24452.8.camel@ssi> <20150808003057.GA1811@kmo-pixel> <CAF1ivSYAiRqG1RhxiHE+cfogB_VKyDDs0aE7YbtZ2o6UeGhZcQ@mail.gmail.com> <20150808052226.GA7050@kmo-pixel>
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On Fri, Aug 07, 2015 at 09:22:26PM -0800, Kent Overstreet wrote:
> Is granularity required to be a power of two? One would hope, but looking at the
> code that doesn't appear to be a requirement... ugh, that's terrible...

If devices have an odd granularity we'll just have to split more than
nessecary.  Let's hope no major hardware does that.
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