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From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 27 Oct 2016 09:34:06 -0700
Message-ID: <CA+55aFy1OGO27GVhM9JmCpUp0W8-o1V3HmxP2_bU_tPd5xqGsg@mail.gmail.com>
Subject: Re: bio linked list corruption.
To: Christoph Hellwig <hch@infradead.org>
Cc: Jens Axboe <axboe@fb.com>, Dave Jones <davej@codemonkey.org.uk>,
        Chris Mason <clm@fb.com>, Andy Lutomirski <luto@amacapital.net>,
        Andy Lutomirski <luto@kernel.org>, Al Viro <viro@zeniv.linux.org.uk>,
        Josef Bacik <jbacik@fb.com>, David Sterba <dsterba@suse.com>,
        linux-btrfs <linux-btrfs@vger.kernel.org>,
        Linux Kernel <linux-kernel@vger.kernel.org>,
        Dave Chinner <david@fromorbit.com>
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On Wed, Oct 26, 2016 at 11:33 PM, Christoph Hellwig <hch@infradead.org> wrote:
>> Dave, can you hit the warnings with this? Totally untested...
>
> Can we just kill off the unhelpful blk_map_ctx structure, e.g.:

Yeah, I found that hard to read too. The difference between
blk_map_ctx and blk_mq_alloc_data is minimal, might as well just use
the latter everywhere.

But please separate that patch from the patch that fixes the ctx list
corruption.

And Jens - can I have at least the corruption fix asap? Due to KS
travel, I'm going to do rc3 on Saturday, and I'd like to have the fix
in at least a day before that..

                Linus