Aneesh Kumar K.V f4894b80b1 powerpc/mm/radix: Use ptep_get_and_clear_full when clearing pte for full mm
This helps us to do some optimization for application exit case, where we can
skip the DD1 style pte update sequence.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Tested-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-02-15 20:02:40 +11:00
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