mm: remove find_max_pfn_with_active_regions

It has no user now

Also print out info about adding/removing active regions.
Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com>
Acked-by: NMel Gorman <mel@csn.ul.ie>
Acked-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

include/linux/mm.h

@@ -1041,7 +1041,6 @@ extern unsigned long absent_pages_in_range(unsigned long start_pfn,
 extern void get_pfn_range_for_nid(unsigned int nid,
 			unsigned long *start_pfn, unsigned long *end_pfn);
 extern unsigned long find_min_pfn_with_active_regions(void);
-extern unsigned long find_max_pfn_with_active_regions(void);
 extern void free_bootmem_with_active_regions(int nid,
 						unsigned long max_low_pfn);
 typedef int (*work_fn_t)(unsigned long, unsigned long, void *);

mm/page_alloc.c

@@ -3753,23 +3753,6 @@ unsigned long __init find_min_pfn_with_active_regions(void)
 	return find_min_pfn_for_node(MAX_NUMNODES);
 }
 
-/**
- * find_max_pfn_with_active_regions - Find the maximum PFN registered
- *
- * It returns the maximum PFN based on information provided via
- * add_active_range().
- */
-unsigned long __init find_max_pfn_with_active_regions(void)
-{
-	int i;
-	unsigned long max_pfn = 0;
-
-	for (i = 0; i < nr_nodemap_entries; i++)
-		max_pfn = max(max_pfn, early_node_map[i].end_pfn);
-
-	return max_pfn;
-}
-
 /*
  * early_calculate_totalpages()
  * Sum pages in active regions for movable zone.