mm, gup: close FOLL MAP_PRIVATE race

[pandora-kernel.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index e5ee683..16394da 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1527,6 +1527,7 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address,
 #define FOLL_MLOCK     0x40    /* mark page as mlocked */
 #define FOLL_SPLIT     0x80    /* don't return transhuge pages, split them */
 #define FOLL_HWPOISON  0x100   /* check page is hwpoisoned */
+#define FOLL_COW       0x4000  /* internal GUP flag */
 
 typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr,
                        void *data);