linux-kernel - Re: aio fixes for use after free and freeze protection

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Message-ID: <20161030165818.GY19539@ZenIV.linux.org.uk>
Date:   Sun, 30 Oct 2016 16:58:18 +0000
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Christoph Hellwig <hch@....de>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Jan Kara <jack@...e.cz>,
        Dmitry Monakhov <dmonakhov@...nvz.org>,
        Jeff Moyer <jmoyer@...hat.com>, linux-fsdevel@...r.kernel.org,
        linux-aio@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: aio fixes for use after free and freeze protection

On Sun, Oct 30, 2016 at 11:42:00AM -0500, Christoph Hellwig wrote:
> Hi Linus, hi Al,
> 
> below is the new version of the aio fix(es).
> 
> Patch one just holds an additional file reference over AIO ops.  This
> one is minimally invasive and a clear 4.9 and stable candidate.
> 
> The next one drops the never implemented aio_fsync methods because it
> makes my life easier later on.  No user visible change as we always
> ended up returning EINVAL anyway.
> 
> Patch three refators the aio code so that it's not a spaghetti monster,
> and patch four is Jan's original free patch rebased on top of this whole
> stack.

Applied.