[PATCH] fs: fix iversion handling

[Chris Mason]

Quoting Ben Myers (2013-12-04 16:25:04)
> Hey Christoph,
> 
> 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 at lst.de>
> 
> Does this still need a btrfs ack, or is it ready to go?

The btrfs parts look good to me.

Signed-off-by: Chris Mason <clm at fb.com>