Subject: linux-next build failure

From: Mark Salter <[email-masked]>
Date: Fri, 03 Jan 2014 10:58:49 -0500

The c6x arch (no MMU) is failing to build in linux-next with:

  kernel/built-in.o:(.fardata+0x3fc): undefined reference to `overcommit_ratio_handler'
  kernel/built-in.o:(.fardata+0x420): undefined reference to `overcommit_kbytes_handler'
  make[1]: *** [vmlinux] Error 1

Looks like this patch adds those functions to mm/mmap.c which
is only used when CONFIG_MMU is defined.

  commit 31bdaf7c8e8a784fd8f889371bdacb24670734c7
  Author: Jerome Marchand <[email-masked]>
  Date:   Tue Dec 17 10:45:06 2013 +1100

      mm: add overcommit_kbytes sysctl variable