MIPS: Handle highmem pages in __update_cache
The following patch will expose __update_cache to highmem pages. Handle them by mapping them in for the duration of the cache maintenance, just like in __flush_dcache_page. The code for that isn't shared because we need the page address in __update_cache so sharing became messy. Given that the entirity is an extra 5 lines, just duplicate it. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Lars Persson <lars.persson@axis.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jerome Marchand <jmarchan@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: stable <stable@vger.kernel.org> # v4.1+ Patchwork: https://patchwork.linux-mips.org/patch/12721/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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