X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=mm%2Fvmalloc.c;h=ba6b0f5f7fac6dcce7a9e8a7c71f00e0e691d193;hb=9b46333406b9cb3397ab538485a4d57c316af0ff;hp=036536945dd9e06f53adf21c165f087a4700c3cc;hpb=3d6eadcb5008beca1b289983ffd7771d1e947bac;p=linux-2.6-omap-h63xx.git

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 036536945dd..ba6b0f5f7fa 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -178,7 +178,7 @@ static int vmap_page_range(unsigned long addr, unsigned long end,
 static inline int is_vmalloc_or_module_addr(const void *x)
 {
 	/*
-	 * x86-64 and sparc64 put modules in a special place,
+	 * ARM, x86-64 and sparc64 put modules in a special place,
 	 * and fall back on vmalloc() if that fails. Others
 	 * just put it in the vmalloc space.
 	 */
@@ -592,6 +592,8 @@ static void free_unmap_vmap_area_addr(unsigned long addr)
 
 #define VMAP_BLOCK_SIZE		(VMAP_BBMAP_BITS * PAGE_SIZE)
 
+static bool vmap_initialized __read_mostly = false;
+
 struct vmap_block_queue {
 	spinlock_t lock;
 	struct list_head free;
@@ -828,6 +830,9 @@ void vm_unmap_aliases(void)
 	int cpu;
 	int flush = 0;
 
+	if (unlikely(!vmap_initialized))
+		return;
+
 	for_each_possible_cpu(cpu) {
 		struct vmap_block_queue *vbq = &per_cpu(vmap_block_queue, cpu);
 		struct vmap_block *vb;
@@ -897,7 +902,8 @@ EXPORT_SYMBOL(vm_unmap_ram);
  * @count: number of pages
  * @node: prefer to allocate data structures on this node
  * @prot: memory protection to use. PAGE_KERNEL for regular RAM
- * @returns: a pointer to the address that has been mapped, or NULL on failure
+ *
+ * Returns: a pointer to the address that has been mapped, or %NULL on failure
  */
 void *vm_map_ram(struct page **pages, unsigned int count, int node, pgprot_t prot)
 {
@@ -941,6 +947,8 @@ void __init vmalloc_init(void)
 		INIT_LIST_HEAD(&vbq->dirty);
 		vbq->nr_dirty = 0;
 	}
+
+	vmap_initialized = true;
 }
 
 void unmap_kernel_range(unsigned long addr, unsigned long size)