1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index ee073146aaa7..ea818ff739cd 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -377,6 +377,7 @@ enum page_entry_size {
 struct vm_operations_struct {
         void (*open)(struct vm_area_struct * area);
         void (*close)(struct vm_area_struct * area);
+        int (*split)(struct vm_area_struct * area, unsigned long addr);
         int (*mremap)(struct vm_area_struct * area);
         int (*fault)(struct vm_fault *vmf);
         int (*huge_fault)(struct vm_fault *vmf, enum page_entry_size pe_size);
@@ -1379,6 +1380,19 @@ long get_user_pages_locked(unsigned long start, unsigned long nr_pages,
                     unsigned int gup_flags, struct page **pages, int *locked);
 long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
                     struct page **pages, unsigned int gup_flags);
+#ifdef CONFIG_FS_DAX
+long get_user_pages_longterm(unsigned long start, unsigned long nr_pages,
+                            unsigned int gup_flags, struct page **pages,
+                            struct vm_area_struct **vmas);
+#else
+static inline long get_user_pages_longterm(unsigned long start,
+                unsigned long nr_pages, unsigned int gup_flags,
+                struct page **pages, struct vm_area_struct **vmas)
+{
+        return get_user_pages(start, nr_pages, gup_flags, pages, vmas);
+}
+#endif /* CONFIG_FS_DAX */
+
 int get_user_pages_fast(unsigned long start, int nr_pages, int write,
                         struct page **pages);