powerpc/mm: Move mmap_sem unlocking in do_page_fault()
Since the fault retry is now handled earlier, we can release the mmap_sem lock earlier too and remove later unlocking previously done in mm_fault_error(). Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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