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From: tytso@mit.edu
To: Amir Goldstein <amir73il@gmail.com>
Cc: Andreas Dilger <adilger@dilger.ca>,
	Ext4 Developers List <linux-ext4@vger.kernel.org>
Subject: Re: Next3 on-disk format change request
Date: Wed, 23 Jun 2010 20:35:29 -0400	[thread overview]
Message-ID: <20100624003529.GF6843@thunk.org> (raw)
In-Reply-To: <AANLkTikAoKpZNGvtyYscPLVH1HrW3xaCZ84sVc62UGD4@mail.gmail.com>

On Tue, Jun 22, 2010 at 01:30:54PM +0300, Amir Goldstein wrote:
> My on-disk format change request is to re-assign a ro_compat feature
> for IS_SNAPSHOT (currently in s_flags).

OK, so in addition to:

#define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT	0x0080

You would also like:

#define EXT4_FEATURE_RO_COMPAT_IS_SNAPSHOT	0x0100

which is a feature flag that the kernel will never support, since this
is a hint that snapshot should only be mounted read-only, correct?

						- Ted

  reply	other threads:[~2010-06-24  0:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-22 10:30 Next3 on-disk format change request Amir Goldstein
2010-06-24  0:35 ` tytso [this message]
2010-06-24  5:33   ` Amir Goldstein
2010-12-21 12:28     ` Amir Goldstein

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