mm: re-architect the VM_UNPAGED logic

[pandora-kernel.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index f0cdfd1..6a75a7a 100644 (file)
--- 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
@@ -664,6 +664,7 @@ 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,
@@ -953,7 +954,7 @@ 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 */