disk_map_sector_rcu 1361 block/blk-core.c 		part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq));
disk_map_sector_rcu  302 block/genhd.c  EXPORT_SYMBOL_GPL(disk_map_sector_rcu);
disk_map_sector_rcu  287 include/linux/genhd.h extern struct hd_struct *disk_map_sector_rcu(struct gendisk *disk,