MIPS: Ensure pmd_present() returns false after pmd_mknotpresent()
This patch is borrowed from ARM64 to ensure pmd_present() returns false after pmd_mknotpresent(). This is needed for THP. References: 5bb1cc0f ("arm64: Ensure pmd_present() returns false after pmd_mknotpresent()") Reviewed-by: James Hogan <jhogan@kernel.org> Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21135/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <james.hogan@mips.com> Cc: Steven J . Hill <Steven.Hill@cavium.com> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Cc: <stable@vger.kernel.org> # 3.8+
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