[PATCH 1/3] xfs: move buf_ops externs to a xfs_format.h

[Christoph Hellwig]

On Fri, Sep 06, 2013 at 09:54:12AM +1000, Dave Chinner wrote:
> Fair enough - I thought about that, but then realised we don't
> really have any "global" shared header files that fit this purpose.
> The only two really are xfs_fs.h - which is used for ioctl interface
> definitions - and xfs_types.h which is used for type definitions,
> not structure instances...
> 
> So I'm not really sure where we'd put something like this without
> creating a new header file, and I don't really want to do that,
> either.

We might need a new one, the headers still need major work anyway.

If we start with

	xfs*_format.h - purely disk format
	xfs_fs.h - ioctl and userspace ABI constants

an

	xfs_shared.h

and
	xfs_kernel.h

seem like logical additions to move most of the misc headers to instead
of all the silly ones for just a handful or two worth of prototypes.

Note that a few non-format bits already sneaked into xfs_format.h
unfortunately, guess I need to watch more closely :)