Messages in this thread | | | Date | Sun, 15 Feb 2015 21:31:59 +0100 | From | Oleg Nesterov <> | Subject | Re: [PATCH V5] x86 spinlock: Fix memory corruption on completing completions |
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On 02/15, Raghavendra K T wrote: > > * Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> [2015-02-15 11:25:44]: > > Resending the V5 with smp_mb__after_atomic() change without bumping up > revision
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Of course, this needs the acks from maintainers. And I agree that SLOWPATH in .head makes xadd() in unlock() unavoidable. However I do not see how we can avoid the locked inc if we want to eliminate read-after-unlock.
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