8 files changed, 20 insertions, 24 deletions

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 7c4f9e097095..f2e574dbc300 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -172,30 +172,22 @@ postcore_initcall(bdi_class_init);
 int bdi_register(struct backing_dev_info *bdi, struct device *parent,
                 const char *fmt, ...)
 {
-        char *name;
         va_list args;
         int ret = 0;
         struct device *dev;
 
         va_start(args, fmt);
-        name = kvasprintf(GFP_KERNEL, fmt, args);
+        dev = device_create_vargs(bdi_class, parent, MKDEV(0, 0), bdi, fmt, args);
         va_end(args);
-
-        if (!name)
-                return -ENOMEM;
-
-        dev = device_create(bdi_class, parent, MKDEV(0, 0), name);
         if (IS_ERR(dev)) {
                 ret = PTR_ERR(dev);
                 goto exit;
         }
 
         bdi->dev = dev;
-        dev_set_drvdata(bdi->dev, bdi);
-        bdi_debug_register(bdi, name);
+        bdi_debug_register(bdi, dev_name(dev));
 
 exit:
-        kfree(name);
         return ret;
 }
 EXPORT_SYMBOL(bdi_register);
diff --git a/mm/memory.c b/mm/memory.c
index fb5608a120ed..19e0ae9beecb 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2295,8 +2295,6 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
         vmf.flags = flags;
         vmf.page = NULL;
 
-        BUG_ON(vma->vm_flags & VM_PFNMAP);
-
         ret = vma->vm_ops->fault(vma, &vmf);
         if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))
                 return ret;
diff --git a/mm/mmap.c b/mm/mmap.c
index fac66337da2a..669499e7c2f5 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -80,7 +80,7 @@ EXPORT_SYMBOL(vm_get_page_prot);
 int sysctl_overcommit_memory = OVERCOMMIT_GUESS;  /* heuristic overcommit */
 int sysctl_overcommit_ratio = 50;       /* default is 50% */
 int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
-atomic_t vm_committed_space = ATOMIC_INIT(0);
+atomic_long_t vm_committed_space = ATOMIC_LONG_INIT(0);
 
 /*
  * Check that a process has enough memory to allocate a new virtual
@@ -177,7 +177,7 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin)
          * cast `allowed' as a signed long because vm_committed_space
          * sometimes has a negative value
          */
-        if (atomic_read(&vm_committed_space) < (long)allowed)
+        if (atomic_long_read(&vm_committed_space) < (long)allowed)
                 return 0;
 error:
         vm_unacct_memory(pages);
diff --git a/mm/nommu.c b/mm/nommu.c
index ef8c62cec697..dca93fcb8b7a 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -39,7 +39,7 @@ struct page *mem_map;
 unsigned long max_mapnr;
 unsigned long num_physpages;
 unsigned long askedalloc, realalloc;
-atomic_t vm_committed_space = ATOMIC_INIT(0);
+atomic_long_t vm_committed_space = ATOMIC_LONG_INIT(0);
 int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */
 int sysctl_overcommit_ratio = 50; /* default is 50% */
 int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
@@ -1410,7 +1410,7 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin)
          * cast `allowed' as a signed long because vm_committed_space
          * sometimes has a negative value
          */
-        if (atomic_read(&vm_committed_space) < (long)allowed)
+        if (atomic_long_read(&vm_committed_space) < (long)allowed)
                 return 0;
 error:
         vm_unacct_memory(pages);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 63835579323a..8e83f02cd2d3 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1396,6 +1396,9 @@ get_page_from_freelist(gfp_t gfp_mask, nodemask_t *nodemask, unsigned int order,
 
         (void)first_zones_zonelist(zonelist, high_zoneidx, nodemask,
                                                         &preferred_zone);
+        if (!preferred_zone)
+                return NULL;
+
         classzone_idx = zone_idx(preferred_zone);
 
 zonelist_scan:
@@ -2804,7 +2807,7 @@ int zone_wait_table_init(struct zone *zone, unsigned long zone_size_pages)
         alloc_size = zone->wait_table_hash_nr_entries
                                         * sizeof(wait_queue_head_t);
 
-        if (system_state == SYSTEM_BOOTING) {
+        if (!slab_is_available()) {
                 zone->wait_table = (wait_queue_head_t *)
                         alloc_bootmem_node(pgdat, alloc_size);
         } else {
@@ -3378,7 +3381,8 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
                  * is used by this zone for memmap. This affects the watermark
                  * and per-cpu initialisations
                  */
-                memmap_pages = (size * sizeof(struct page)) >> PAGE_SHIFT;
+                memmap_pages =
+                        PAGE_ALIGN(size * sizeof(struct page)) >> PAGE_SHIFT;
                 if (realsize >= memmap_pages) {
                         realsize -= memmap_pages;
                         printk(KERN_DEBUG
diff --git a/mm/slob.c b/mm/slob.c
index 6038cbadf796..a3ad6671adf1 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -469,8 +469,9 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node)
                         return ZERO_SIZE_PTR;
 
                 m = slob_alloc(size + align, gfp, align, node);
-                if (m)
-                        *m = size;
+                if (!m)
+                        return NULL;
+                *m = size;
                 return (void *)m + align;
         } else {
                 void *ret;
diff --git a/mm/slub.c b/mm/slub.c
index a505a828ef41..0987d1cd943c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2726,9 +2726,10 @@ size_t ksize(const void *object)
 
         page = virt_to_head_page(object);
 
-        if (unlikely(!PageSlab(page)))
+        if (unlikely(!PageSlab(page))) {
+                WARN_ON(!PageCompound(page));
                 return PAGE_SIZE << compound_order(page);
-
+        }
         s = page->slab;
 
 #ifdef CONFIG_SLUB_DEBUG
diff --git a/mm/swap.c b/mm/swap.c
index 91e194445a5e..45c9f25a8a3b 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -503,7 +503,7 @@ void vm_acct_memory(long pages)
         local = &__get_cpu_var(committed_space);
         *local += pages;
         if (*local > ACCT_THRESHOLD || *local < -ACCT_THRESHOLD) {
-                atomic_add(*local, &vm_committed_space);
+                atomic_long_add(*local, &vm_committed_space);
                 *local = 0;
         }
         preempt_enable();
@@ -520,7 +520,7 @@ static int cpu_swap_callback(struct notifier_block *nfb,
 
         committed = &per_cpu(committed_space, (long)hcpu);
         if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) {
-                atomic_add(*committed, &vm_committed_space);
+                atomic_long_add(*committed, &vm_committed_space);
                 *committed = 0;
                 drain_cpu_pagevecs((long)hcpu);
         }