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Re: [PATCH] fs: fix iversion handling

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH] fs: fix iversion handling
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Tue, 3 Dec 2013 10:25:06 +1100
Cc: linux-fsdevel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131119151707.GA13412@xxxxxxxxxxxxx>
References: <20131119151707.GA13412@xxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Tue, Nov 19, 2013 at 07:17:07AM -0800, Christoph Hellwig wrote:
> Currently notify_change directly updates i_version for size updates,
> which not only is counter to how all other fields are updated through
> struct iattr, but also breaks XFS, which need inode updates to happen
> under its own lock, and synchronized to the structure that gets written
> to the log.
> 
> Remove the update in the common code, and it to btrfs and ext4,
> XFS already does a proper updaste internally and currently gets a
> double update with the existing code.
> 
> IMHO this is 3.13 and -stable material and should go in through the XFS
> tree.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Looks good to me.

Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>

-- 
Dave Chinner
david@xxxxxxxxxxxxx

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