On Thu, 23 Dec 2010 13:43:19 +0800, Huang Ying said:
> Add a lock-less NULL-terminated linked list implementation.  And use
> that in irq_work and replace net/rds/xlist.h.

A quick overview of the code looks mostly sane.  What I don't see is
an explanation of *why* this is being added.  What benefits does it
have over the current code?  Is it faster? Smaller?  Simply getting rid
of near-duplicate versions in rds and irq_work? Something else?