1 files changed, 26 insertions, 8 deletions

diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 478ce6d4a2c4..17acf01791fa 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -42,7 +42,7 @@ static void * __ref __earlyonly_bootmem_alloc(int node,
                                 unsigned long align,
                                 unsigned long goal)
 {
-        return memblock_virt_alloc_try_nid(size, align, goal,
+        return memblock_virt_alloc_try_nid_raw(size, align, goal,
                                             BOOTMEM_ALLOC_ACCESSIBLE, node);
 }
 
@@ -53,13 +53,20 @@ void * __meminit vmemmap_alloc_block(unsigned long size, int node)
 {
         /* If the main allocator is up use that, fallback to bootmem. */
         if (slab_is_available()) {
+                gfp_t gfp_mask = GFP_KERNEL|__GFP_RETRY_MAYFAIL|__GFP_NOWARN;
+                int order = get_order(size);
+                static bool warned;
                 struct page *page;
 
-                page = alloc_pages_node(node,
-                        GFP_KERNEL | __GFP_ZERO | __GFP_RETRY_MAYFAIL,
-                        get_order(size));
+                page = alloc_pages_node(node, gfp_mask, order);
                 if (page)
                         return page_address(page);
+
+                if (!warned) {
+                        warn_alloc(gfp_mask & ~__GFP_NOWARN, NULL,
+                                   "vmemmap alloc failure: order:%u", order);
+                        warned = true;
+                }
                 return NULL;
         } else
                 return __earlyonly_bootmem_alloc(node, size, size,
@@ -180,11 +187,22 @@ pte_t * __meminit vmemmap_pte_populate(pmd_t *pmd, unsigned long addr, int node)
         return pte;
 }
 
+static void * __meminit vmemmap_alloc_block_zero(unsigned long size, int node)
+{
+        void *p = vmemmap_alloc_block(size, node);
+
+        if (!p)
+                return NULL;
+        memset(p, 0, size);
+
+        return p;
+}
+
 pmd_t * __meminit vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node)
 {
         pmd_t *pmd = pmd_offset(pud, addr);
         if (pmd_none(*pmd)) {
-                void *p = vmemmap_alloc_block(PAGE_SIZE, node);
+                void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
                 if (!p)
                         return NULL;
                 pmd_populate_kernel(&init_mm, pmd, p);
@@ -196,7 +214,7 @@ pud_t * __meminit vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node)
 {
         pud_t *pud = pud_offset(p4d, addr);
         if (pud_none(*pud)) {
-                void *p = vmemmap_alloc_block(PAGE_SIZE, node);
+                void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
                 if (!p)
                         return NULL;
                 pud_populate(&init_mm, pud, p);
@@ -208,7 +226,7 @@ p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node)
 {
         p4d_t *p4d = p4d_offset(pgd, addr);
         if (p4d_none(*p4d)) {
-                void *p = vmemmap_alloc_block(PAGE_SIZE, node);
+                void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
                 if (!p)
                         return NULL;
                 p4d_populate(&init_mm, p4d, p);
@@ -220,7 +238,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node)
 {
         pgd_t *pgd = pgd_offset_k(addr);
         if (pgd_none(*pgd)) {
-                void *p = vmemmap_alloc_block(PAGE_SIZE, node);
+                void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
                 if (!p)
                         return NULL;
                 pgd_populate(&init_mm, pgd, p);