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Date:	Tue, 15 Sep 2015 07:31:20 +0200
From:	Jan Kara <>
To:	Linus Torvalds <>
Cc:	"Darrick J. Wong" <>,
	Mel Gorman <>,
	Jan Kara <>, LKML <>,
	"" <>,
	linux-fsdevel <>
Subject: Re: [GIT PULL] Ext3 removal, quota & udf fixes

On Wed 02-09-15 16:47:24, Linus Torvalds wrote:
> On Wed, Sep 2, 2015 at 11:45 AM, Darrick J. Wong
> <> wrote:
> > On Wed, Sep 02, 2015 at 05:52:01PM +0100, Mel Gorman wrote:
> >> On the flip side, there does not appear to be any good reason for
> >> keeping the ext3 driver around because if there ever is a case where an
> >> old kernel is required to mount an ext3 filesystem then it appears the
> >> ext4 developers would consider it a bug.
> >
> > Yes, that would be a bug.
> So the thing I'm happy to see is that the ext4 developers seem to
> unanimously agree that maintaining ext3 compatibility is part of their
> job, and nobody seems to be arguing for keeping ext3 around. As long
> as any possible regressions from ext3 removal have a clear "yup, it's
> on us" from the ext4 people,  I don't mind removing it. I was
> expecting ext4 people to not be thrilled about supporting possible
> legacy cases.
> As a result, I'm personally convinced. I'll get around to the
> filesystem pulls tomorrow unless something unexpected happens, and
> expect to pull Jan's ext3-removal tree unless somebody suddenly speaks
> up.

Thanks for pulling. Next time I will do a better job when writing a
changelog for such large change. We were discussing this on and off for
last two years with other ext4 developers so when I finally decided the
time for removal has come, it felt obvious to me...

Jan Kara <>
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