mm, thp: introduce FOLL_SPLIT_PMD

[linux-2.6-microblaze.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0ac87d9..233ad11 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2591,6 +2591,7 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
 #define FOLL_COW       0x4000  /* internal GUP flag */
 #define FOLL_ANON      0x8000  /* don't do file mappings */
 #define FOLL_LONGTERM  0x10000 /* mapping lifetime is indefinite: see below */
+#define FOLL_SPLIT_PMD 0x20000 /* split huge pmd before returning */
 
 /*
  * NOTE on FOLL_LONGTERM: