84 	struct vm_area_struct *vma;  member
241 	unsigned int pgnr = (addr - map->vma->vm_start) >> PAGE_SHIFT;  in find_grant_ptes()
397 static void gntdev_vma_open(struct vm_area_struct *vma)  in gntdev_vma_open()  argument
399 	struct grant_map *map = vma->vm_private_data;  in gntdev_vma_open()
401 	pr_debug("gntdev_vma_open %p\n", vma);  in gntdev_vma_open()
405 static void gntdev_vma_close(struct vm_area_struct *vma)  in gntdev_vma_close()  argument
407 	struct grant_map *map = vma->vm_private_data;  in gntdev_vma_close()
408 	struct file *file = vma->vm_file;  in gntdev_vma_close()
411 	pr_debug("gntdev_vma_close %p\n", vma);  in gntdev_vma_close()
421 		map->vma = NULL;  in gntdev_vma_close()
424 	vma->vm_private_data = NULL;  in gntdev_vma_close()
428 static struct page *gntdev_vma_find_special_page(struct vm_area_struct *vma,  in gntdev_vma_find_special_page()  argument
431 	struct grant_map *map = vma->vm_private_data;  in gntdev_vma_find_special_page()
450 	if (!map->vma)  in unmap_if_in_range()
452 	if (map->vma->vm_start >= end)  in unmap_if_in_range()
454 	if (map->vma->vm_end <= start)  in unmap_if_in_range()
456 	mstart = max(start, map->vma->vm_start);  in unmap_if_in_range()
457 	mend   = min(end,   map->vma->vm_end);  in unmap_if_in_range()
460 			map->vma->vm_start, map->vma->vm_end,  in unmap_if_in_range()
463 				(mstart - map->vma->vm_start) >> PAGE_SHIFT,  in unmap_if_in_range()
501 		if (!map->vma)  in mn_release()
505 				map->vma->vm_start, map->vma->vm_end);  in mn_release()
510 		if (!map->vma)  in mn_release()
514 				map->vma->vm_start, map->vma->vm_end);  in mn_release()
656 	struct vm_area_struct *vma;  in gntdev_ioctl_get_offset_for_vaddr()  local
665 	vma = find_vma(current->mm, op.vaddr);  in gntdev_ioctl_get_offset_for_vaddr()
666 	if (!vma || vma->vm_ops != &gntdev_vmops)  in gntdev_ioctl_get_offset_for_vaddr()
669 	map = vma->vm_private_data;  in gntdev_ioctl_get_offset_for_vaddr()
778 static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)  in gntdev_mmap()  argument
781 	int index = vma->vm_pgoff;  in gntdev_mmap()
782 	int count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;  in gntdev_mmap()
786 	if ((vma->vm_flags & VM_WRITE) && !(vma->vm_flags & VM_SHARED))  in gntdev_mmap()
790 			index, count, vma->vm_start, vma->vm_pgoff);  in gntdev_mmap()
796 	if (use_ptemod && map->vma)  in gntdev_mmap()
798 	if (use_ptemod && priv->mm != vma->vm_mm) {  in gntdev_mmap()
805 	vma->vm_ops = &gntdev_vmops;  in gntdev_mmap()
807 	vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP | VM_IO;  in gntdev_mmap()
810 		vma->vm_flags |= VM_DONTCOPY;  in gntdev_mmap()
812 	vma->vm_private_data = map;  in gntdev_mmap()
815 		map->vma = vma;  in gntdev_mmap()
818 		if ((vma->vm_flags & VM_WRITE) &&  in gntdev_mmap()
823 		if (!(vma->vm_flags & VM_WRITE))  in gntdev_mmap()
830 		err = apply_to_page_range(vma->vm_mm, vma->vm_start,  in gntdev_mmap()
831 					  vma->vm_end - vma->vm_start,  in gntdev_mmap()
845 			err = vm_insert_page(vma, vma->vm_start + i*PAGE_SIZE,  in gntdev_mmap()
862 			apply_to_page_range(vma->vm_mm, vma->vm_start,  in gntdev_mmap()
863 					    vma->vm_end - vma->vm_start,  in gntdev_mmap()
867 		map->pages_vm_start = vma->vm_start;  in gntdev_mmap()
880 		map->vma = NULL;  in gntdev_mmap()