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Date:   Wed, 15 Jan 2020 09:10:47 -0800
From:   "Darrick J. Wong" <darrick.wong@...cle.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Andreas Gruenbacher <agruenba@...hat.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>,
        Sage Weil <sage@...hat.com>, Ilya Dryomov <idryomov@...il.com>,
        "Theodore Ts'o" <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <chao@...nel.org>,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Richard Weinberger <richard@....at>,
        Artem Bityutskiy <dedekind1@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        ceph-devel@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, Chris Mason <clm@...com>,
        Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>, linux-btrfs@...r.kernel.org,
        Jan Kara <jack@...e.cz>, YueHaibing <yuehaibing@...wei.com>,
        Arnd Bergmann <arnd@...db.de>, Chao Yu <yuchao0@...wei.com>
Subject: Re: [PATCH v4] fs: Fix page_mkwrite off-by-one errors

On Wed, Jan 08, 2020 at 08:57:10AM -0800, Christoph Hellwig wrote:
> I don't want to be the party pooper, but shouldn't this be a series
> with one patch to add the helper, and then once for each fs / piece
> of common code switched over?

The current patch in the iomap branch contains the chunks that add the
helper function, fix iomap, and whatever chunks for other filesystems
that don't cause /any/ merge complaints in for-next.  That means btrfs,
ceph, ext4, and ubifs will get fixed this time around.

Seeing as it's been floating around in for-next for a week now I'd
rather not rebase the branch just to rip out the four parts that haven't
given me any headaches so that they can be applied separately. :)

The acks from the other fs maintainers were very helpful, but at the
same time, I don't want to become a shadow vfs maintainer.

Therefore, whatever's in this v4 patch that isn't in [1] will have to be
sent separately.

[1] https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=iomap-5.6-merge&id=62e298db3fc3ebf41d996f3c86b44cbbdd3286bc

> On Wed, Jan 08, 2020 at 02:15:28PM +0100, Andreas Gruenbacher wrote:
> > Hi Darrick,
> > 
> > here's an updated version with the latest feedback incorporated.  Hope
> > you find that useful.
> > 
> > As far as the f2fs merge conflict goes, I've been told by Linus not to
> > resolve those kinds of conflicts but to point them out when sending the
> > merge request.  So this shouldn't be a big deal.
> 
> Also this isn't really the proper way to write a commit message.  This
> text would go into the cover letter if it was a series..

<urk> Yeah.

--D

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