1 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index f0cdfd18db55..0e73f1539d08 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -145,7 +145,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_GROWSDOWN    0x00000100      /* general info on the segment */
 #define VM_GROWSUP      0x00000200
 #define VM_SHM          0x00000000      /* Means nothing: delete it later */
-#define VM_UNPAGED      0x00000400      /* Pages managed without map count */
+#define VM_PFNMAP       0x00000400      /* Page-ranges managed without "struct page", just pure PFN */
 #define VM_DENYWRITE    0x00000800      /* ETXTBSY on write attempts.. */
 
 #define VM_EXECUTABLE   0x00001000
@@ -163,6 +163,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_HUGETLB      0x00400000      /* Huge TLB Page VM */
 #define VM_NONLINEAR    0x00800000      /* Is non-linear (remap_file_pages) */
 #define VM_MAPPED_COPY  0x01000000      /* T if mapped copy of data (nommu mmap) */
+#define VM_INCOMPLETE   0x02000000      /* Strange partial PFN mapping marker */
 
 #ifndef VM_STACK_DEFAULT_FLAGS          /* arch can override this */
 #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
@@ -664,6 +665,7 @@ struct zap_details {
         unsigned long truncate_count;           /* Compare vm_truncate_count */
 };
 
+struct page *vm_normal_page(struct vm_area_struct *, unsigned long, pte_t);
 unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address,
                 unsigned long size, struct zap_details *);
 unsigned long unmap_vmas(struct mmu_gather **tlb,
@@ -740,6 +742,8 @@ struct shrinker;
 extern struct shrinker *set_shrinker(int, shrinker_t);
 extern void remove_shrinker(struct shrinker *shrinker);
 
+extern pte_t *FASTCALL(get_locked_pte(struct mm_struct *mm, unsigned long addr, spinlock_t **ptl));
+
 int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address);
 int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address);
 int __pte_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned long address);
@@ -953,7 +957,7 @@ unsigned long vmalloc_to_pfn(void *addr);
 int remap_pfn_range(struct vm_area_struct *, unsigned long addr,
                         unsigned long pfn, unsigned long size, pgprot_t);
 
-struct page *follow_page(struct mm_struct *, unsigned long address,
+struct page *follow_page(struct vm_area_struct *, unsigned long address,
                         unsigned int foll_flags);
 #define FOLL_WRITE      0x01    /* check pte is writable */
 #define FOLL_TOUCH      0x02    /* mark page accessed */