powerpc/64s: free page table caches at exit_mmap time

[Michael Ellerman]

On Wed, 2018-07-25 at 09:54:28 UTC, Nicholas Piggin wrote:
> The kernel page table caches are tied to init_mm, so there is no
> more need for them after userspace is finished.
> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/34c604d27590fdc9a2c944be8c50ae

cheers