linux-kernel - Re: bio linked list corruption.

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Message-ID: <CA+55aFy1OGO27GVhM9JmCpUp0W8-o1V3HmxP2_bU_tPd5xqGsg@mail.gmail.com>
Date:   Thu, 27 Oct 2016 09:34:06 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Jens Axboe <axboe@...com>, Dave Jones <davej@...emonkey.org.uk>,
        Chris Mason <clm@...com>,
        Andy Lutomirski <luto@...capital.net>,
        Andy Lutomirski <luto@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>, Josef Bacik <jbacik@...com>,
        David Sterba <dsterba@...e.com>,
        linux-btrfs <linux-btrfs@...r.kernel.org>,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        Dave Chinner <david@...morbit.com>
Subject: Re: bio linked list corruption.

On Wed, Oct 26, 2016 at 11:33 PM, Christoph Hellwig <hch@...radead.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