From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Salter <msalter@redhat.com>
Subject: linux-next build failure
Date: Fri, 03 Jan 2014 10:58:49 -0500
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Cc: Andrew Morton <akpm@linux-foundation.org>, jmarchan@redhat.com

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 <jmarchan@redhat.com>
  Date:   Tue Dec 17 10:45:06 2013 +1100

      mm: add overcommit_kbytes sysctl variable