On Thu, 28 May 2015 17:19:40 -0400
Dan Streetman <ddstr...@ieee.org> wrote:
> >> oh, ok. how do we do type-generic inline funcs? return void*?
> >
> > I was hoping that you would tell me. I use macros in that case.
>
> ha, if I ever get to the point where i think i know more than you,
> i'll let you know ;-)
static inline struct list_head *
list_last_or_null_rcu(struct list_head *ptr)
{
struct list_head *entry;
struct list_head *last;
for (entry = list_next_rcu(ptr);
entry != ptr; entry = list_next_rcu(entry))
last = __entry;
if (last != ptr)
return last;
return NULL;
}
#define list_last_or_null_entry_rcu(ptr, type, member) \
({ \
struct list_head *__ptr = list_last_or_null_rcu(ptr); \
__ptr ? list_entry_rcu(__ptr, type, member) : NULL; \
})
-- Steve
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
