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

[Alex Elder]

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.

Reviewed-by: Alex Elder <aelder at sgi.com>