Re: [PATCH 0/6] list: introduce list_last_entry_or_null()

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Fri, Nov 15, 2013 at 12:29:48PM +0800, Jeff Liu wrote:
> Hi Folks,
> 
> This patch is trying to introduce a new list helper to retrieve the
> last entry or return NULL if the list is empty corresponding to it,
> which is inspired by Jiri Pirko's list_first_entry_or_null().

How did we end up with the stupid _or_null prefix there?  I think the
functionality is useful, but the naming is way to verbose, especially
given that a list_first_entry or list_last_entry that optimizes away
that one check doesn't seem useful.

Instead of encoding detailed semantics in the name a good kerneldoc
comment is way better.