Merge tag 'drm-intel-next-fixes-2015-04-25' of git://anongit.freedesktop.org/drm...

[cascardo/linux.git] / drivers / gpu / drm / i915 / i915_gem_evict.c

diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index e3a49d9..d09e35e 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -63,6 +63,10 @@ mark_free(struct i915_vma *vma, struct list_head *unwind)
  *
  * This function is used by the object/vma binding code.
  *
+ * Since this function is only used to free up virtual address space it only
+ * ignores pinned vmas, and not object where the backing storage itself is
+ * pinned. Hence obj->pages_pin_count does not protect against eviction.
+ *
  * To clarify: This is for freeing up virtual address space, not for freeing
  * memory in e.g. the shrinker.
  */