X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=blobdiff_plain;f=mm%2Fpage_alloc.c;h=40587d74cd1c6fdf522f18ea23abeb76822fd273;hp=644a59d17318a47c8ef409274721e117030630c6;hb=73a6e474cb376;hpb=da50c57bdbb8e37ec6f8c934a2f8acbf4e4fdfb9

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 644a59d17318..40587d74cd1c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5951,23 +5951,6 @@ overlap_memmap_init(unsigned long zone, unsigned long *pfn)
 	return false;
 }
 
-#ifdef CONFIG_SPARSEMEM
-/* Skip PFNs that belong to non-present sections */
-static inline __meminit unsigned long next_pfn(unsigned long pfn)
-{
-	const unsigned long section_nr = pfn_to_section_nr(++pfn);
-
-	if (present_section_nr(section_nr))
-		return pfn;
-	return section_nr_to_pfn(next_present_section_nr(section_nr));
-}
-#else
-static inline __meminit unsigned long next_pfn(unsigned long pfn)
-{
-	return pfn++;
-}
-#endif
-
 /*
  * Initially all pages are reserved - free ones are freed
  * up by memblock_free_all() once the early boot process is
@@ -6007,14 +5990,6 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
 		 * function.  They do not exist on hotplugged memory.
 		 */
 		if (context == MEMMAP_EARLY) {
-			if (!early_pfn_valid(pfn)) {
-				pfn = next_pfn(pfn);
-				continue;
-			}
-			if (!early_pfn_in_nid(pfn, nid)) {
-				pfn++;
-				continue;
-			}
 			if (overlap_memmap_init(zone, &pfn))
 				continue;
 			if (defer_init(nid, pfn, end_pfn))
@@ -6130,9 +6105,23 @@ static void __meminit zone_init_free_lists(struct zone *zone)
 }
 
 void __meminit __weak memmap_init(unsigned long size, int nid,
-				  unsigned long zone, unsigned long start_pfn)
+				  unsigned long zone,
+				  unsigned long range_start_pfn)
 {
-	memmap_init_zone(size, nid, zone, start_pfn, MEMMAP_EARLY, NULL);
+	unsigned long start_pfn, end_pfn;
+	unsigned long range_end_pfn = range_start_pfn + size;
+	int i;
+
+	for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
+		start_pfn = clamp(start_pfn, range_start_pfn, range_end_pfn);
+		end_pfn = clamp(end_pfn, range_start_pfn, range_end_pfn);
+
+		if (end_pfn > start_pfn) {
+			size = end_pfn - start_pfn;
+			memmap_init_zone(size, nid, zone, start_pfn,
+					 MEMMAP_EARLY, NULL);
+		}
+	}
 }
 
 static int zone_batchsize(struct zone *zone)