X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=mm%2Fvmalloc.c;h=cb5aabda70461818e2184872ef340bac87d3f055;hb=4b1d89290b62bb2db476c94c82cf7442aab440c8;hp=46606c133e824ea4a12f8ae7ca818c333a938628;hpb=d5b9b787b5e1618dfe82a2c2a6972374e85b02db;p=linux-2.6-omap-h63xx.git

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 46606c133e8..cb5aabda704 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -181,16 +181,13 @@ static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long fl
 	}
 	addr = ALIGN(start, align);
 	size = PAGE_ALIGN(size);
+	if (unlikely(!size))
+		return NULL;
 
 	area = kmalloc_node(sizeof(*area), gfp_mask & GFP_LEVEL_MASK, node);
 	if (unlikely(!area))
 		return NULL;
 
-	if (unlikely(!size)) {
-		kfree (area);
-		return NULL;
-	}
-
 	/*
 	 * We always allocate a guard page.
 	 */
@@ -434,7 +431,7 @@ void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
 		area->flags |= VM_VPAGES;
 	} else {
 		pages = kmalloc_node(array_size,
-				(gfp_mask & ~(__GFP_HIGHMEM | __GFP_ZERO)),
+				(gfp_mask & GFP_LEVEL_MASK),
 				node);
 	}
 	area->pages = pages;
@@ -532,11 +529,12 @@ void *vmalloc_user(unsigned long size)
 	void *ret;
 
 	ret = __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
-	write_lock(&vmlist_lock);
-	area = __find_vm_area(ret);
-	area->flags |= VM_USERMAP;
-	write_unlock(&vmlist_lock);
-
+	if (ret) {
+		write_lock(&vmlist_lock);
+		area = __find_vm_area(ret);
+		area->flags |= VM_USERMAP;
+		write_unlock(&vmlist_lock);
+	}
 	return ret;
 }
 EXPORT_SYMBOL(vmalloc_user);
@@ -579,6 +577,14 @@ void *vmalloc_exec(unsigned long size)
 	return __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC);
 }
 
+#if defined(CONFIG_64BIT) && defined(CONFIG_ZONE_DMA32)
+#define GFP_VMALLOC32 GFP_DMA32
+#elif defined(CONFIG_64BIT) && defined(CONFIG_ZONE_DMA)
+#define GFP_VMALLOC32 GFP_DMA
+#else
+#define GFP_VMALLOC32 GFP_KERNEL
+#endif
+
 /**
  *	vmalloc_32  -  allocate virtually contiguous memory (32bit addressable)
  *	@size:		allocation size
@@ -588,7 +594,7 @@ void *vmalloc_exec(unsigned long size)
  */
 void *vmalloc_32(unsigned long size)
 {
-	return __vmalloc(size, GFP_KERNEL, PAGE_KERNEL);
+	return __vmalloc(size, GFP_VMALLOC32, PAGE_KERNEL);
 }
 EXPORT_SYMBOL(vmalloc_32);
 
@@ -604,12 +610,13 @@ void *vmalloc_32_user(unsigned long size)
 	struct vm_struct *area;
 	void *ret;
 
-	ret = __vmalloc(size, GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL);
-	write_lock(&vmlist_lock);
-	area = __find_vm_area(ret);
-	area->flags |= VM_USERMAP;
-	write_unlock(&vmlist_lock);
-
+	ret = __vmalloc(size, GFP_VMALLOC32 | __GFP_ZERO, PAGE_KERNEL);
+	if (ret) {
+		write_lock(&vmlist_lock);
+		area = __find_vm_area(ret);
+		area->flags |= VM_USERMAP;
+		write_unlock(&vmlist_lock);
+	}
 	return ret;
 }
 EXPORT_SYMBOL(vmalloc_32_user);
@@ -700,7 +707,7 @@ finished:
  *	that it is big enough to cover the vma. Will return failure if
  *	that criteria isn't met.
  *
- *	Similar to remap_pfn_range (see mm/memory.c)
+ *	Similar to remap_pfn_range() (see mm/memory.c)
  */
 int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
 						unsigned long pgoff)