* [PATCH] drm/radeon: fix userptr BO unpin bug v2
@ 2015-05-05 7:24 Christian König
2015-05-05 13:48 ` Alex Deucher
0 siblings, 1 reply; 2+ messages in thread
From: Christian König @ 2015-05-05 7:24 UTC (permalink / raw)
To: alexdeucher, imirkin; +Cc: dri-devel
From: "monk.liu" <monk.liu@amd.com>
Fixing a memory leak with userptrs.
v2: clean up the loop, use an iterator instead
Signed-off-by: monk.liu <monk.liu@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
CC: stable@vger.kernel.org
---
drivers/gpu/drm/radeon/radeon_ttm.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index b292aca..921dd0f 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -591,7 +591,7 @@ static void radeon_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
{
struct radeon_device *rdev = radeon_get_rdev(ttm->bdev);
struct radeon_ttm_tt *gtt = (void *)ttm;
- struct scatterlist *sg;
+ struct sg_page_iter sg_iter;
int i;
int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
@@ -605,9 +605,8 @@ static void radeon_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
/* free the sg table and pages again */
dma_unmap_sg(rdev->dev, ttm->sg->sgl, ttm->sg->nents, direction);
- for_each_sg(ttm->sg->sgl, sg, ttm->sg->nents, i) {
- struct page *page = sg_page(sg);
-
+ for_each_sg_page(ttm->sg->sgl, &sg_iter, ttm->sg->nents, 0) {
+ struct page *page = sg_page_iter_page(&sg_iter);
if (!(gtt->userflags & RADEON_GEM_USERPTR_READONLY))
set_page_dirty(page);
--
1.9.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/radeon: fix userptr BO unpin bug v2
2015-05-05 7:24 [PATCH] drm/radeon: fix userptr BO unpin bug v2 Christian König
@ 2015-05-05 13:48 ` Alex Deucher
0 siblings, 0 replies; 2+ messages in thread
From: Alex Deucher @ 2015-05-05 13:48 UTC (permalink / raw)
To: Christian König; +Cc: Maling list - DRI developers
On Tue, May 5, 2015 at 3:24 AM, Christian König <deathsimple@vodafone.de> wrote:
> From: "monk.liu" <monk.liu@amd.com>
>
> Fixing a memory leak with userptrs.
>
> v2: clean up the loop, use an iterator instead
>
> Signed-off-by: monk.liu <monk.liu@amd.com>
> Signed-off-by: Christian König <christian.koenig@amd.com>
> CC: stable@vger.kernel.org
Applied to my -fixes tree.
Alex
> ---
> drivers/gpu/drm/radeon/radeon_ttm.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> index b292aca..921dd0f 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -591,7 +591,7 @@ static void radeon_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
> {
> struct radeon_device *rdev = radeon_get_rdev(ttm->bdev);
> struct radeon_ttm_tt *gtt = (void *)ttm;
> - struct scatterlist *sg;
> + struct sg_page_iter sg_iter;
> int i;
>
> int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
> @@ -605,9 +605,8 @@ static void radeon_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
> /* free the sg table and pages again */
> dma_unmap_sg(rdev->dev, ttm->sg->sgl, ttm->sg->nents, direction);
>
> - for_each_sg(ttm->sg->sgl, sg, ttm->sg->nents, i) {
> - struct page *page = sg_page(sg);
> -
> + for_each_sg_page(ttm->sg->sgl, &sg_iter, ttm->sg->nents, 0) {
> + struct page *page = sg_page_iter_page(&sg_iter);
> if (!(gtt->userflags & RADEON_GEM_USERPTR_READONLY))
> set_page_dirty(page);
>
> --
> 1.9.1
>
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