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-rw-r--r--include/linux/mm.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 40ff114aaf9e..a62b91e769c8 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2976,7 +2976,8 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
#define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */
#define FOLL_NOWAIT 0x20 /* if a disk transfer is needed, start the IO
* and return without waiting upon it */
-#define FOLL_POPULATE 0x40 /* fault in page */
+#define FOLL_POPULATE 0x40 /* fault in pages (with FOLL_MLOCK) */
+#define FOLL_NOFAULT 0x80 /* do not fault in pages */
#define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */
#define FOLL_NUMA 0x200 /* force NUMA hinting page fault */
#define FOLL_MIGRATION 0x400 /* wait for page to replace migration entry */