Security: Kernel OOM-killer and allocation denial use different rules

Security: Kernel OOM-killer and allocation denial use different rules

Original patch created by Leonid Moiseichuk <leonid.moiseichuk@nokia.com>

Fixes the issue with the oom killer and lowmem module being inconsistent;
processes that are important enough to be protected from the oom killer should
not be denied memory either.

Signed-off-by: Henrik Saari <henrik.saari@nokia.com>
Signed-off-by: Viktor Rosendahl <viktor.rosendahl@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>