linux-kernel - Re: IO errors after "block: remove bio_get_nr

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Message-ID: <CA+55aFzEzm0fQ20GTNMuSKsymQVzYnP3DdDo5HinXjek5Dtmzg@mail.gmail.com>
Date:	Sun, 20 Dec 2015 21:23:18 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Artem S. Tashkinov" <t.artem@...os.com>
Cc:	Ming Lei <tom.leiming@...il.com>,
	Kent Overstreet <kent.overstreet@...il.com>,
	Christoph Hellwig <hch@....de>,
	Ming Lin <ming.l@....samsung.com>, Jens Axboe <axboe@...com>,
	"Artem S. Tashkinov" <t.artem@...lcity.com>,
	Steven Whitehouse <swhiteho@...hat.com>,
	Tejun Heo <tj@...nel.org>, IDE-ML <linux-ide@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: IO errors after "block: remove bio_get_nr_vecs()"

On Sun, Dec 20, 2015 at 8:47 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> That said, we obviously need to figure out this current problem
> regardless first..

... although maybe it *would* be interesting to hear what happens if
you just compile a 64-bit kernel instead?

Do you still see the problem? Because if not, then we should look very
specifically for some 32-bit PAE issue.

For example, maybe we use "unsigned long" somewhere where we should
use "phys_addr_t". On x86-64, they obviously end up being the same. On
normal non-PAE x86-32, they are also the same. But ..

                 Linus
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