linux-ext4 - [PATCH 0/12 RFC] Moving i_dquot out of struct inode

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Message-Id: <1412191894-9113-1-git-send-email-jack@suse.cz>
Date:	Wed,  1 Oct 2014 21:31:22 +0200
From:	Jan Kara <jack@...e.cz>
To:	linux-fsdevel@...r.kernel.org
Cc:	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,
	Jan Kara <jack@...e.cz>
Subject: [PATCH 0/12 RFC] Moving i_dquot out of struct inode

  Hello,

  this patch set moves i_dquot array from struct inode into filesystem private
part of the inode. Thus filesystems which don't need it save 2 pointers in
their inodes (would be 3 after we add project quota support into generic
quota).

I have patches to move inode->i_data.private_list into filesystem private part
of the inode which is going to save another 2 pointers using the same
mechanism. However I didn't want to mix those in.

The patch series also contains a change to quotactl so that each filesystem
can set quota types it supports. This is in the end unrelated change
(originally it was necessary for i_dquot moving but in the end I changed
things so that it's not anymore). I can move that into a separate series
but I was somewhat reluctant to do that since that would mean another 6
one-line patches to the same files we are changing here...

Comments are welcome.

								Honza
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