Function prototype or declaration at include/linux/blkdev.h, line 940 References: block/blk-settings.c, line 482 block/blk-settings.c, line 486 drivers/block/rbd.c, line 3414 drivers/block/virtio_blk.c, line 838 drivers/md/raid0.c, line 282 drivers/md/raid10.c, line 3660 drivers/md/raid10.c, line 3662 drivers/md/raid5.c, line 5906 drivers/s390/block/scm_blk_cluster.c, line 114 drivers/scsi/sd.c, line 2538 drivers/staging/zram/zram_drv.c, line 871 include/linux/blkdev.h, line 940