Am 12.06.19 um 15:28 schrieb Chris Wilson:
Mark the access to reservation_object.fence as being protected to
silence sparse.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
---
include/linux/reservation.h | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/include/linux/reservation.h b/include/linux/reservation.h
index ee750765cc94..644a22dbe53b 100644
--- a/include/linux/reservation.h
+++ b/include/linux/reservation.h
@@ -216,8 +216,12 @@ reservation_object_unlock(struct reservation_object *obj)
{
#ifdef CONFIG_DEBUG_MUTEXES
/* Test shared fence slot reservation */
- if (obj->fence)
- obj->fence->shared_max = obj->fence->shared_count;
+ if (rcu_access_pointer(obj->fence)) {
+ struct reservation_object_list *fence =
+ reservation_object_get_list(obj);
+
+ fence->shared_max = fence->shared_count;
+ }
#endif
ww_mutex_unlock(&obj->lock);
}
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