linux-ext4 - Re: [PATCH 02/12] quota: Allow each filesystem to specify which quota types it supports

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Date:	Wed, 22 Oct 2014 18:29:15 +0200
From:	Christoph Hellwig <hch@....de>
To:	Jan Kara <jack@...e.cz>
Cc:	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	Dave Chinner <david@...morbit.com>, xfs@....sgi.com,
	cluster-devel@...hat.com, Steven Whitehouse <swhiteho@...hat.com>,
	Mark Fasheh <mfasheh@...e.com>,
	Joel Becker <jlbec@...lplan.org>, ocfs2-devel@....oracle.com,
	reiserfs-devel@...r.kernel.org, Jeff Mahoney <jeffm@...e.de>,
	Dave Kleikamp <shaggy@...nel.org>,
	jfs-discussion@...ts.sourceforge.net, tytso@....edu,
	viro@...iv.linux.org.uk, hch@....de
Subject: Re: [PATCH 02/12] quota: Allow each filesystem to specify which
	quota types it supports

On Tue, Oct 21, 2014 at 04:38:26PM +0200, Jan Kara wrote:
> Currently all filesystems supporting VFS quota support user and group
> quotas. With introduction of project quotas this is going to change so
> make sure filesystem isn't called for quota type it doesn't support by
> introduction of a bitmask determining which quota types each filesystem
> supports.

Why don't you keep this bitmask in the dquot.c instead of pushing it
to the caller?  So far usage of s_dquot is mostly confined to dquot.c
(with a few leaks to the filesystems using it), so keeping it that
way seems like a good idea.

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