[PATCH v2] xfs: Simplify xfs_ail_min() with list_first_entry_or_null()

[Ben Myers]

On Thu, Aug 15, 2013 at 01:08:35PM +0800, Jeff Liu wrote:
> From: Jie Liu <jeff.liu at oracle.com>
> 
> At xfs_ail_min(), we do check if the AIL list is empty or not before
> returning the first item in it with list_empty() and list_first_entry().
> 
> This can be simplified a bit with a new list operation routine that is
> the list_first_entry_or_null() which has been introduced by:
> 
> commit 6d7581e62f8be462440d7b22c6361f7c9fa4902b
>     list: introduce list_first_entry_or_null
> 
> v2: make xfs_ail_min() as a static inline function and move it to
>     xfs_trans_priv.h as per Dave Chinner's comments.
> 
> Signed-off-by: Jie Liu <jeff.liu at oracle.com>

Reviewed-by: Ben Myers <bpm at sgi.com>

Applied.  Thanks Jeff.