From: "monk.liu" <monk....@amd.com>
Fixing a memory leak with userptrs.
Signed-off-by: monk.liu <monk.liu at amd.com>
Signed-off-by: Christian König <christian.koenig at amd.com>
CC: stable at vger.kernel.org
---
drivers/gpu/drm/radeon/radeon_ttm.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c
b/drivers/gpu/drm/radeon/radeon_ttm.c
index b292aca..e661841 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -606,13 +606,18 @@ static void radeon_ttm_tt_unpin_userptr(struct ttm_tt
*ttm)
dma_unmap_sg(rdev->dev, ttm->sg->sgl, ttm->sg->nents, direction);
for_each_sg(ttm->sg->sgl, sg, ttm->sg->nents, i) {
+ int len = sg->length >> PAGE_SHIFT;
struct page *page = sg_page(sg);
+ while (len > 0) {
+ if (!(gtt->userflags & RADEON_GEM_USERPTR_READONLY))
+ set_page_dirty(page);
- if (!(gtt->userflags & RADEON_GEM_USERPTR_READONLY))
- set_page_dirty(page);
+ mark_page_accessed(page);
+ page_cache_release(page);
- mark_page_accessed(page);
- page_cache_release(page);
+ page++;
+ len--;
+ }
}
sg_free_table(ttm->sg);
--
1.9.1
