drm/i915: Do not leak pages when freeing userptr objects
sg_alloc_table_from_pages() can build us a table with coalesced ranges which
means we need to iterate over pages and not sg table entries when releasing
page references.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: "Barbalho, Rafael" <rafael.barbalho@intel.com>
Tested-by: Rafael Barbalho <rafael.barbalho@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
[danvet: Remove unused local variable sg.]
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c
index f5efbb8..d182058 100644
--- a/drivers/gpu/drm/i915/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/i915_gem_userptr.c
@@ -689,16 +689,15 @@
static void
i915_gem_userptr_put_pages(struct drm_i915_gem_object *obj)
{
- struct scatterlist *sg;
- int i;
+ struct sg_page_iter sg_iter;
BUG_ON(obj->userptr.work != NULL);
if (obj->madv != I915_MADV_WILLNEED)
obj->dirty = 0;
- for_each_sg(obj->pages->sgl, sg, obj->pages->nents, i) {
- struct page *page = sg_page(sg);
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) {
+ struct page *page = sg_page_iter_page(&sg_iter);
if (obj->dirty)
set_page_dirty(page);