From 025df7755472dc5ee9ebc5aa7023eba4b4ef3e3b Mon Sep 17 00:00:00 2001 From: Libin Date: Mon, 15 Apr 2013 20:48:57 +0800 Subject: [PATCH] drm: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT (*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented as a inline funcion vma_pages() in linux/mm.h, so using it. Signed-off-by: Libin Signed-off-by: Dave Airlie --- drivers/gpu/drm/ttm/ttm_bo_vm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 74705f32..3df9f16 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -147,7 +147,7 @@ static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) page_offset = ((address - vma->vm_start) >> PAGE_SHIFT) + bo->vm_node->start - vma->vm_pgoff; - page_last = ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) + + page_last = vma_pages(vma) + bo->vm_node->start - vma->vm_pgoff; if (unlikely(page_offset >= bo->num_pages)) { @@ -258,7 +258,7 @@ int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma, read_lock(&bdev->vm_lock); bo = ttm_bo_vm_lookup_rb(bdev, vma->vm_pgoff, - (vma->vm_end - vma->vm_start) >> PAGE_SHIFT); + vma_pages(vma)); if (likely(bo != NULL) && !kref_get_unless_zero(&bo->kref)) bo = NULL; read_unlock(&bdev->vm_lock); -- 2.7.4