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Re: [PATCH 15/15] xfs: implement inode change count

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 15/15] xfs: implement inode change count
From: Mark Tinguely <tinguely@xxxxxxx>
Date: Thu, 27 Jun 2013 10:06:30 -0500
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1372313099-8121-16-git-send-email-david@xxxxxxxxxxxxx>
References: <1372313099-8121-1-git-send-email-david@xxxxxxxxxxxxx> <1372313099-8121-16-git-send-email-david@xxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:9.0) Gecko/20120122 Thunderbird/9.0
On 06/27/13 01:04, Dave Chinner wrote:
From: Dave Chinner<dchinner@xxxxxxxxxx>

For CRC enabled filesystems, add support for the monotonic inode
version change counter that is needed by protocols like NFSv4 for
determining if the inode has changed in any way at all between two
unrelated operations on the inode.

This bumps the change count the first time an inode is dirtied in a
transaction. Since all modifications to the inode are logged, this
will catch all changes that are made to the inode, including
timestamp updates that occur during data writes.

Signed-off-by: Dave Chinner<dchinner@xxxxxxxxxx>

Looks good.

Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>

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