spin_unlock_irq(&lo->lo_lock); 
static struct bio *loop_get_bio(struct loop_device *lo){	struct bio *bio;	spin_lock_irq(&lo->lo_lock);	if ((bio = lo->lo_bio)) {		if (bio == lo->lo_biotail)			lo->lo_biotail = NULL;		lo->lo_bio = bio->bi_next;		bio->bi_next = NULL;	}	spin_unlock_irq(&lo->lo_lock);	return bio;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/35a82d1a53e1a9ad54efafcc940f9335beaed5c3/loop.c/buggy/drivers/block/loop.c