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authorLibin <huawei.libin@huawei.com>2013-04-15 20:48:57 +0800
committerDave Airlie <airlied@redhat.com>2013-04-16 13:14:00 +1000
commit025df7755472dc5ee9ebc5aa7023eba4b4ef3e3b (patch)
tree5174bb512dde0009be5b4e9567da281bea2c38cd /drivers/gpu/drm/ttm
parent87d24fc3abb0666b23b6136d81dc29014b3c76dd (diff)
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 <huawei.libin@huawei.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/ttm')
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo_vm.c4
1 files 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 74705f329d9..3df9f16b041 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);