[PATCH 24/27] xfs: clean up buffer locking helpers

[Alex Elder]

On Fri, 2011-07-01 at 05:43 -0400, Christoph Hellwig wrote:
> Rename xfs_buf_cond_lock and reverse it's return value to fit most other
> trylock operations in the Kernel and XFS (with the exception of down_trylock,
> after which xfs_buf_cond_lock was modelled), and replace xfs_buf_lock_val
> with an xfs_buf_islocked for use in asserts, or and opencoded variant in
> tracing.  remove the XFS_BUF_* wrappers for all the locking helpers.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Nice change.  More readable.

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