On Wed, Oct 09, 2013 at 03:18:05PM -0700, Josh Triplett wrote: > On Wed, Oct 09, 2013 at 02:29:20PM -0700, Paul E. McKenney wrote: > > Hello! > > > > This series features updates to allow sparse to do a better job of > > statically analyzing RCU usage: > > > > 1. Apply ACCESS_ONCE() to rcu_assign_pointer()'s target to prevent > > comiler mischief. Also require that the source pointer be from > > the kernel address space. Sometimes it can be from the RCU address > > space, which necessitates the remaining patches in this series. > > Which, it must be admitted, apply to a very small fraction of > > the rcu_assign_pointer() invocations in the kernel. This commit > > courtesy of Josh Triplett. > > > > 2-13. Apply rcu_access_pointer() to avoid a number of false positives. > > I would suggest moving patch 1 to the end of the series, to avoid > introducing and subsequently fixing warnings. That would help with bisectability, will do! Thanx, Paul
