1 files changed, 42 insertions, 15 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9f8a97b9a350..3f8bce264df6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2317,6 +2317,21 @@ void free_pages(unsigned long addr, unsigned int order)
 
 EXPORT_SYMBOL(free_pages);
 
+static void *make_alloc_exact(unsigned long addr, unsigned order, size_t size)
+{
+        if (addr) {
+                unsigned long alloc_end = addr + (PAGE_SIZE << order);
+                unsigned long used = addr + PAGE_ALIGN(size);
+
+                split_page(virt_to_page((void *)addr), order);
+                while (used < alloc_end) {
+                        free_page(used);
+                        used += PAGE_SIZE;
+                }
+        }
+        return (void *)addr;
+}
+
 /**
  * alloc_pages_exact - allocate an exact number physically-contiguous pages.
  * @size: the number of bytes to allocate
@@ -2336,22 +2351,33 @@ void *alloc_pages_exact(size_t size, gfp_t gfp_mask)
         unsigned long addr;
 
         addr = __get_free_pages(gfp_mask, order);
-        if (addr) {
-                unsigned long alloc_end = addr + (PAGE_SIZE << order);
-                unsigned long used = addr + PAGE_ALIGN(size);
-
-                split_page(virt_to_page((void *)addr), order);
-                while (used < alloc_end) {
-                        free_page(used);
-                        used += PAGE_SIZE;
-                }
-        }
-
-        return (void *)addr;
+        return make_alloc_exact(addr, order, size);
 }
 EXPORT_SYMBOL(alloc_pages_exact);
 
 /**
+ * alloc_pages_exact_nid - allocate an exact number of physically-contiguous
+ *                         pages on a node.
+ * @nid: the preferred node ID where memory should be allocated
+ * @size: the number of bytes to allocate
+ * @gfp_mask: GFP flags for the allocation
+ *
+ * Like alloc_pages_exact(), but try to allocate on node nid first before falling
+ * back.
+ * Note this is not alloc_pages_exact_node() which allocates on a specific node,
+ * but is not exact.
+ */
+void *alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask)
+{
+        unsigned order = get_order(size);
+        struct page *p = alloc_pages_node(nid, gfp_mask, order);
+        if (!p)
+                return NULL;
+        return make_alloc_exact((unsigned long)page_address(p), order, size);
+}
+EXPORT_SYMBOL(alloc_pages_exact_nid);
+
+/**
  * free_pages_exact - release memory allocated via alloc_pages_exact()
  * @virt: the value returned by alloc_pages_exact.
  * @size: size of allocation, same value as passed to alloc_pages_exact().
@@ -3564,7 +3590,7 @@ int zone_wait_table_init(struct zone *zone, unsigned long zone_size_pages)
 
         if (!slab_is_available()) {
                 zone->wait_table = (wait_queue_head_t *)
-                        alloc_bootmem_node(pgdat, alloc_size);
+                        alloc_bootmem_node_nopanic(pgdat, alloc_size);
         } else {
                 /*
                  * This case means that a zone whose size was 0 gets new memory
@@ -4141,7 +4167,8 @@ static void __init setup_usemap(struct pglist_data *pgdat,
         unsigned long usemapsize = usemap_size(zonesize);
         zone->pageblock_flags = NULL;
         if (usemapsize)
-                zone->pageblock_flags = alloc_bootmem_node(pgdat, usemapsize);
+                zone->pageblock_flags = alloc_bootmem_node_nopanic(pgdat,
+                                                                   usemapsize);
 }
 #else
 static inline void setup_usemap(struct pglist_data *pgdat,
@@ -4307,7 +4334,7 @@ static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat)
                 size =  (end - start) * sizeof(struct page);
                 map = alloc_remap(pgdat->node_id, size);
                 if (!map)
-                        map = alloc_bootmem_node(pgdat, size);
+                        map = alloc_bootmem_node_nopanic(pgdat, size);
                 pgdat->node_mem_map = map + (pgdat->node_start_pfn - start);
         }
 #ifndef CONFIG_NEED_MULTIPLE_NODES