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-rw-r--r--include/linux/mm.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a5c451816fd..ca9536a348c 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