[PATCH] Fix sparsemem on Cell

[linux-2.6-omap-h63xx.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a49f96b7ea4323667bf635f034c3950f5aa0f7b8..fc5b5442e9421efc9044eed23e3a188fffe5cce7 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1956,17 +1956,24 @@ static inline unsigned long wait_table_bits(unsigned long size)
  * done. Non-atomic initialization, single-pass.
  */
 void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
-               unsigned long start_pfn)
+               unsigned long start_pfn, enum memmap_context context)
 {
        struct page *page;
        unsigned long end_pfn = start_pfn + size;
        unsigned long pfn;
 
        for (pfn = start_pfn; pfn < end_pfn; pfn++) {
-               if (!early_pfn_valid(pfn))
-                       continue;
-               if (!early_pfn_in_nid(pfn, nid))
-                       continue;
+               /*
+                * There can be holes in boot-time mem_map[]s
+                * handed to this function.  They do not
+                * exist on hotplugged memory.
+                */
+               if (context == MEMMAP_EARLY) {
+                       if (!early_pfn_valid(pfn))
+                               continue;
+                       if (!early_pfn_in_nid(pfn, nid))
+                               continue;
+               }
                page = pfn_to_page(pfn);
                set_page_links(page, zone, nid, pfn);
                init_page_count(page);
@@ -1993,7 +2000,7 @@ void zone_init_free_lists(struct pglist_data *pgdat, struct zone *zone,
 
 #ifndef __HAVE_ARCH_MEMMAP_INIT
 #define memmap_init(size, nid, zone, start_pfn) \
-       memmap_init_zone((size), (nid), (zone), (start_pfn))
+       memmap_init_zone((size), (nid), (zone), (start_pfn), MEMMAP_EARLY)
 #endif
 
 static int __cpuinit zone_batchsize(struct zone *zone)
@@ -2239,7 +2246,8 @@ static __meminit void zone_pcp_init(struct zone *zone)
 
 __meminit int init_currently_empty_zone(struct zone *zone,
                                        unsigned long zone_start_pfn,
-                                       unsigned long size)
+                                       unsigned long size,
+                                       enum memmap_context context)
 {
        struct pglist_data *pgdat = zone->zone_pgdat;
        int ret;
@@ -2683,7 +2691,8 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat,
                if (!size)
                        continue;
 
-               ret = init_currently_empty_zone(zone, zone_start_pfn, size);
+               ret = init_currently_empty_zone(zone, zone_start_pfn,
+                                               size, MEMMAP_EARLY);
                BUG_ON(ret);
                zone_start_pfn += size;
        }