1 files changed, 8 insertions, 0 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 3c609abe8c80..e74731c1a912 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -446,7 +446,15 @@ struct drm_file {
         int is_master; /* this file private is a master for a minor */
         struct drm_master *master; /* master this node is currently associated with
                                       N.B. not always minor->master */
+
+        /**
+         * fbs - List of framebuffers associated with this file.
+         *
+         * Protected by fbs_lock. Note that the fbs list holds a reference on
+         * the fb object to prevent it from untimely disappearing.
+         */
         struct list_head fbs;
+        struct mutex fbs_lock;
 
         wait_queue_head_t event_wait;
         struct list_head event_list;