1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index a5c451816fdc..ca9536a348c8 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -168,6 +168,12 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_INSERTPAGE   0x02000000      /* The vma has had "vm_insert_page()" done on it */
 #define VM_ALWAYSDUMP   0x04000000      /* Always include in core dumps */
 
+#define VM_CAN_INVALIDATE 0x08000000    /* The mapping may be invalidated,
+                                         * eg. truncate or invalidate_inode_*.
+                                         * In this case, do_no_page must
+                                         * return with the page locked.
+                                         */
+
 #ifndef VM_STACK_DEFAULT_FLAGS          /* arch can override this */
 #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
 #endif