[PATCH] powerpc: thp: Add write barrier after updating the valid bit

Benjamin Herrenschmidt benh at kernel.crashing.org
Tue Jul 29 17:00:44 EST 2014

On Tue, 2014-07-29 at 12:25 +0530, Aneesh Kumar K.V wrote:
> We want to make sure for usage like below we don't reorder the  load.
> if (pmd_trans_huge(*pmdp)){
>    get_hpte_slot_array(pmdp)
> }

Shouldn't we also make sure that we don't have lock set ? (In case it's
in the middle of being updated).


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