mm/page_alloc.c: skip ZONE_MOVABLE if required_kernelcore is larger than totalpages

mm/page_alloc.c: skip ZONE_MOVABLE if required_kernelcore is larger than totalpages

If kernelcore was not specified, or the kernelcore size is zero
(required_movablecore >= totalpages), or the kernelcore size is larger
than totalpages, there is no ZONE_MOVABLE.  We should fill the zone with
both kernel memory and movable memory.

Signed-off-by: Xishi Qiu <[email protected]>
Reviewed-by: Yasuaki Ishimatsu <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Tang Chen <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>