[RFC][PATCH 0/3] spin_unlock_wait and assorted borkage

From: Peter Zijlstra
Date: Tue May 24 2016 - 10:38:02 EST

As per recent discussions spin_unlock_wait() has an unintuitive 'feature'.


These patches pull the existing solution into generic code; annotate all
spin_unlock_wait() users and fix nf_conntrack more.

The alternative -- putting smp_acquire__after_ctrl_dep() into
spin_unlock_wait() can be done later if desired, now that al users are audited
and corrected.

Please (very) carefully consider.