87 	struct mutex dev_mutex;  member
224 	mutex_lock(&dev->dev_mutex);  in ubiblock_open()
254 	mutex_unlock(&dev->dev_mutex);  in ubiblock_open()
258 	mutex_unlock(&dev->dev_mutex);  in ubiblock_open()
266 	mutex_lock(&dev->dev_mutex);  in ubiblock_release()
272 	mutex_unlock(&dev->dev_mutex);  in ubiblock_release()
395 	mutex_init(&dev->dev_mutex);  in ubiblock_create()
507 	mutex_lock(&dev->dev_mutex);  in ubiblock_remove()
516 	mutex_unlock(&dev->dev_mutex);  in ubiblock_remove()
523 	mutex_unlock(&dev->dev_mutex);  in ubiblock_remove()
558 	mutex_lock(&dev->dev_mutex);  in ubiblock_resize()
565 	mutex_unlock(&dev->dev_mutex);  in ubiblock_resize()