[PATCH-v3 1/6] fs: split update_time() into update_time() and write_time()

[David Sterba]

On Tue, Nov 25, 2014 at 12:34:29AM -0500, Theodore Ts'o wrote:
> In preparation for adding support for the lazytime mount option, we
> need to be able to separate out the update_time() and write_time()
> inode operations.  Currently, only btrfs and xfs uses update_time().
> 
> We needed to preserve update_time() because btrfs wants to have a
> special btrfs_root_readonly() check; otherwise we could drop the
> update_time() inode operation entirely.
> 
> Signed-off-by: Theodore Ts'o <tytso at mit.edu>
> Cc: xfs at oss.sgi.com
> Cc: linux-btrfs at vger.kernel.org

For the btrfs changes

Acked-by: David Sterba <dsterba at suse.cz>