[PATCH 1/2] drm/exynos: use __free_page() to deallocate memory

[Inki Dae]

this patch uses __free_page() to deallocate the pages allocated
by alloc_page() and the pages doesn't need set_parge_dirty()
and mark_page_accessed() because they aren't from page cache so
removes them.

this patch has a pair with previous patch below,
	http://www.spinics.net/lists/dri-devel/msg24382.html

Signed-off-by: Inki Dae <inki.dae at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_gem.c |   14 +++-----------
 1 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index dceb69f..4b8b988 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -129,20 +129,12 @@ static void exynos_gem_put_pages(struct drm_gem_object *obj,
 					struct page **pages,
 					bool dirty, bool accessed)
 {
-	int i, npages;
+	unsigned int npages;
 
 	npages = obj->size >> PAGE_SHIFT;
 
-	for (i = 0; i < npages; i++) {
-		if (dirty)
-			set_page_dirty(pages[i]);
-
-		if (accessed)
-			mark_page_accessed(pages[i]);
-
-		/* Undo the reference we took when populating the table */
-		page_cache_release(pages[i]);
-	}
+	while (--npages >= 0)
+		__free_page(pages[npages]);
 
 	drm_free_large(pages);
 }
-- 
1.7.4.1