1 files changed, 9 insertions, 1 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3dd80ba6568a..035a688e5472 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -285,6 +285,11 @@ extern pgprot_t protection_map[16];
 #define FAULT_FLAG_REMOTE       0x80    /* faulting for non current tsk/mm */
 #define FAULT_FLAG_INSTRUCTION  0x100   /* The fault was during an instruction fetch */
 
+#define FAULT_FLAG_SIZE_MASK    0x7000  /* Support up to 8-level page tables */
+#define FAULT_FLAG_SIZE_PTE     0x0000  /* First level (eg 4k) */
+#define FAULT_FLAG_SIZE_PMD     0x1000  /* Second level (eg 2MB) */
+#define FAULT_FLAG_SIZE_PUD     0x2000  /* Third level (eg 1GB) */
+
 #define FAULT_FLAG_TRACE \
         { FAULT_FLAG_WRITE,             "WRITE" }, \
         { FAULT_FLAG_MKWRITE,           "MKWRITE" }, \
@@ -314,6 +319,9 @@ struct vm_fault {
         unsigned long address;          /* Faulting virtual address */
         pmd_t *pmd;                     /* Pointer to pmd entry matching
                                          * the 'address' */
+        pud_t *pud;                     /* Pointer to pud entry matching
+                                         * the 'address'
+                                         */
         pte_t orig_pte;                 /* Value of PTE at the time of fault */
 
         struct page *cow_page;          /* Page handler may use for COW fault */
@@ -351,7 +359,7 @@ struct vm_operations_struct {
         void (*close)(struct vm_area_struct * area);
         int (*mremap)(struct vm_area_struct * area);
         int (*fault)(struct vm_fault *vmf);
-        int (*pmd_fault)(struct vm_fault *vmf);
+        int (*huge_fault)(struct vm_fault *vmf);
         void (*map_pages)(struct vm_fault *vmf,
                         pgoff_t start_pgoff, pgoff_t end_pgoff);