mm/hugetlb.c: use long vars instead of int in region_count()

The arguments f & t and fields from & to of struct file_region are
defined as long.  So use long instead of int to type the temp vars.
Signed-off-by: NWang Sheng-Hui <shhuiw@gmail.com>
Acked-by: NDavid Rientjes <rientjes@google.com>
Acked-by: NHillf Danton <dhillf@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/hugetlb.c

@@ -273,8 +273,8 @@ static long region_count(struct list_head *head, long f, long t)
 
 	/* Locate each segment we overlap with, and count that overlap. */
 	list_for_each_entry(rg, head, link) {
-		int seg_from;
-		int seg_to;
+		long seg_from;
+		long seg_to;
 
 		if (rg->to <= f)
 			continue;