From: Tvrtko Ursulin Date: Fri, 26 Sep 2014 14:05:22 +0000 (+0100) Subject: drm/i915: Do not leak pages when freeing userptr objects X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c479f4383ea8940dd6f88da61798ad31feb33e51;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git 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 Cc: Chris Wilson Cc: "Barbalho, Rafael" Tested-by: Rafael Barbalho Reviewed-by: Chris Wilson Cc: stable@vger.kernel.org [danvet: Remove unused local variable sg.] Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c index f5efbb836e5c..d182058383a9 100644 --- a/drivers/gpu/drm/i915/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/i915_gem_userptr.c @@ -689,16 +689,15 @@ i915_gem_userptr_get_pages(struct drm_i915_gem_object *obj) 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);