[PATCH 05/11] xfs: add a proper transaction pointer to struct xfs_buf

[Christoph Hellwig]

On Mon, Jul 11, 2011 at 05:33:04PM -0500, Alex Elder wrote:
> On Sun, 2011-07-10 at 16:49 -0400, Christoph Hellwig wrote:
> > Replace the typeless b_fspriv2 and the ugly macros around it with a properly
> > typed transaction pointer.
> > 
> > Signed-off-by: Christoph Hellwig <hch at lst.de>
> 
> So it looks like you do two things.
> - make it a real pointer (which it should be), when it's
>   used to keep track of the transaction a buffer is
>   associated with; and
> - eliminate the use of this field storing cast 1's and 2's
>   for verifying the way log buffers are used.
> 
> I don't see much value in the second one, and the first
> is the way it should be, so this looks good to me.

I should have mentioned that it also drops those pointless debug checks
in the log code.  I'll add it to the patch description.