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Diffstat (limited to 'include/linux/vmalloc.h')
-rw-r--r--include/linux/vmalloc.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index b87696fdf06a..7d7acb35603d 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -16,6 +16,7 @@ struct vm_area_struct; /* vma defining user mapping in mm_types.h */
#define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
#define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
#define VM_UNINITIALIZED 0x00000020 /* vm_struct is not fully initialized */
+#define VM_NO_GUARD 0x00000040 /* don't add guard page */
/* bits [20..32] reserved for arch specific ioremap internals */
/*
@@ -75,7 +76,9 @@ extern void *vmalloc_32_user(unsigned long size);
extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
extern void *__vmalloc_node_range(unsigned long size, unsigned long align,
unsigned long start, unsigned long end, gfp_t gfp_mask,
- pgprot_t prot, int node, const void *caller);
+ pgprot_t prot, unsigned long vm_flags, int node,
+ const void *caller);
+
extern void vfree(const void *addr);
extern void *vmap(struct page **pages, unsigned int count,
@@ -96,8 +99,12 @@ void vmalloc_sync_all(void);
static inline size_t get_vm_area_size(const struct vm_struct *area)
{
- /* return actual size without guard page */
- return area->size - PAGE_SIZE;
+ if (!(area->flags & VM_NO_GUARD))
+ /* return actual size without guard page */
+ return area->size - PAGE_SIZE;
+ else
+ return area->size;
+
}
extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);