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powerpc/mm: convert coprocessor fault to lock_mm_and_find_vma()
commit 2cd76c5 upstream. This is one of the simple cases, except there's no pt_regs pointer. Which is fine, as lock_mm_and_find_vma() is set up to work fine with a NULL pt_regs. Powerpc already enabled LOCK_MM_AND_FIND_VMA for the main CPU faulting, so we can just use the helper without any extra work. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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