[Intel-gfx] [PATCH v3 10/17] drm/i915: Require object lock when freeing pages during destruction

[Maarten Lankhorst]

TTM already requires this, and we require it for delayed destroy.

Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.a...@intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_object.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c 
b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 5fac9b560b73..39cd563544a5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -262,6 +262,8 @@ static void __i915_gem_object_free_mmaps(struct 
drm_i915_gem_object *obj)
  */
 void __i915_gem_object_pages_fini(struct drm_i915_gem_object *obj)
 {
+       assert_object_held(obj);
+
        if (!list_empty(&obj->vma.list)) {
                struct i915_vma *vma;
 
@@ -328,7 +330,10 @@ static void __i915_gem_free_objects(struct 
drm_i915_private *i915,
                        obj->ops->delayed_free(obj);
                        continue;
                }
+
+               i915_gem_object_lock(obj, NULL);
                __i915_gem_object_pages_fini(obj);
+               i915_gem_object_unlock(obj);
                __i915_gem_free_object(obj);
 
                /* But keep the pointer alive for RCU-protected lookups */
-- 
2.34.1