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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: Ben Myers <bpm@xxxxxxx>
Date: Fri, 28 Jun 2013 13:00:54 -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: Mutt/1.5.20 (2009-06-14)
On Thu, Jun 27, 2013 at 04:04:59PM +1000, 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>


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