[PATCH 1/2] powerpc: use smp_rmb when looking at deposisted pgtable to store hash index

[Aneesh Kumar K.V]

Michael Neuling <mikey at neuling.org> writes:

> Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com> wrote:
>
>> From: "Aneesh Kumar K.V" <aneesh.kumar at linux.vnet.ibm.com>
>> 
>> We need to use smb_rmb when looking at hpte slot array. Otherwise we could
>> reorder the hpte_slot array load bfore even we marked the pmd trans huge.
>
> Does this need to go back into the stable series?
>

No the changes are not yet upstream. hpte_slot_array changes are in the
THP series. I didn't want to post the entire series again with the 
above two patches. 

-aneesh