Messages in this thread | | | Date | Thu, 22 Sep 2005 13:27:56 +1000 | From | Nick Piggin <> | Subject | Re: [PATCH] RT: Checks for cmpxchg in get_task_struct_rcu() |
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Daniel Walker wrote: > On Thu, 2005-09-22 at 10:59 +1000, Nick Piggin wrote: > > >>You need my atomic_cmpxchg patches that provide an atomic_cmpxchg >>(and atomic_inc_not_zero) for all architectures. >> > > > It is racy, but why not just disable preemption .. >
Well you haven't, that's the point. You *introduce* racy operation.
Anyway, no matter, atomic_cmpxchg will take care of this nicely.
-- SUSE Labs, Novell Inc.
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