Re: [PATCH v5 01/11] block: make generic_make_request handle arbitrarily sized bios

From: Kent Overstreet
Date: Sat Aug 08 2015 - 01:22:40 EST

On Fri, Aug 07, 2015 at 10:17:43PM -0700, Ming Lin wrote:
> On Fri, Aug 7, 2015 at 5:30 PM, Kent Overstreet
> > Ideally we'd get upper layers out of the business of knowing about the queue
> > limits at all - that was the point of the patch series, after all.
> >
> > Instead of using UINT_MAX, would it work to just make the max 1 << 31 sectors?'
> 1 << 31 = 2G bytes = 0x400000 sectors.
> Yes, that works as long as it's multiple of granularity.

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...
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