95 	struct mutex dev_mutex;  member
232 	mutex_lock(&dev->dev_mutex);  in ubiblock_open()
262 	mutex_unlock(&dev->dev_mutex);  in ubiblock_open()
266 	mutex_unlock(&dev->dev_mutex);  in ubiblock_open()
274 	mutex_lock(&dev->dev_mutex);  in ubiblock_release()
280 	mutex_unlock(&dev->dev_mutex);  in ubiblock_release()
378 	mutex_init(&dev->dev_mutex);  in ubiblock_create()
493 	mutex_lock(&dev->dev_mutex);  in ubiblock_remove()
502 	mutex_unlock(&dev->dev_mutex);  in ubiblock_remove()
509 	mutex_unlock(&dev->dev_mutex);  in ubiblock_remove()
538 	mutex_lock(&dev->dev_mutex);  in ubiblock_resize()
545 	mutex_unlock(&dev->dev_mutex);  in ubiblock_resize()