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[PATCH 0/11 RFC] quota: Unify VFS and XFS quota interfaces

To: linux-fsdevel@xxxxxxxxxxxxxxx
Subject: [PATCH 0/11 RFC] quota: Unify VFS and XFS quota interfaces
From: Jan Kara <jack@xxxxxxx>
Date: Tue, 11 Nov 2014 22:04:14 +0100
Cc: linux-ext4@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, Jan Kara <jack@xxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx

  this is a first (still partial) attempt to unify VFS and XFS quota interfaces
so that XFS quotactls work for filesystems with VFS quotas and vice versa.
This is useful so that userspace doesn't have to care that much about which
filesystem it is using at least when using basic quota functionality. In
particular we should be able to reuse project quota tests in xfstests for

In this patch set I unify quotaon / quotaoff handling (Q_QUOTAON, Q_QUOTAOFF,
Q_XQUOTAON, Q_XQUOTAOFF calls) and fix some bugs in the Q_XGETQUOTA,
Q_XSETQLIM, Q_GETQUOTA, Q_SETQUOTA calls done by Christoph some time ago.  I
have actually verified that xfs_quota is able to work with ext4 filesystem
(after tweaking it to not check fs type) when these patches are applied.

What is still missing is unification of Q_XGETQSTATV, Q_GETINFO, Q_SETINFO.

Comments are welcome.


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