Messages in this thread | | | Subject | Re: [PATCH tip/core/rcu 01/14] rcu: Protect rcu_boost() lockless accesses with ACCESS_ONCE() | From | Davidlohr Bueso <> | Date | Thu, 08 Jan 2015 22:41:54 -0800 |
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On Thu, 2015-01-08 at 07:22 -0800, Paul E. McKenney wrote: > > Didn't we just obsolete ACCESS_ONCE with that {READ,WRITE}_ONCE stuff? > > Indeed we did! But that was after I did this commit back on October 29th. > > I am planning a bulk change to READ_ONCE() and ASSIGN_ONCE() either as > the last patch for 3.20 or as the first one for 3.21. Probably as the > first for 3.21 to minimize rebasing hassles with any needed 3.20 fixes.
That reminds me, I think the new conversion for stores will most likely introduce silly arg bugs:
- ACCESS_ONCE(a) = b; + ASSIGN_ONCE(b, a);
Thanks, Davidlohr
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