block: Add BLKROTATIONAL ioctl
[linux-2.6.git] / block / compat_ioctl.c
index 7b72502..7c668c8 100644 (file)
@@ -719,6 +719,9 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
        case BLKSECTGET:
                return compat_put_ushort(arg,
                                         queue_max_sectors(bdev_get_queue(bdev)));
+       case BLKROTATIONAL:
+               return compat_put_ushort(arg,
+                                        !blk_queue_nonrot(bdev_get_queue(bdev)));
        case BLKRASET: /* compatible, but no compat_ptr (!) */
        case BLKFRASET:
                if (!capable(CAP_SYS_ADMIN))