- return blk_trace_ioctl(bdev, cmd, compat_ptr(arg));
- }
- return -ENOIOCTLCMD;
-}
-
-/* Most of the generic ioctls are handled in the normal fallback path.
- This assumes the blkdev's low level compat_ioctl always returns
- ENOIOCTLCMD for unknown ioctls. */
-long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
-{
- int ret = -ENOIOCTLCMD;
- struct inode *inode = file->f_mapping->host;
- struct block_device *bdev = inode->i_bdev;
- struct gendisk *disk = bdev->bd_disk;
-
- switch (cmd) {
- case HDIO_GETGEO:
- return compat_hdio_getgeo(disk, bdev, compat_ptr(arg));
- case BLKFLSBUF:
- case BLKROSET:
- case BLKDISCARD:
- /*
- * the ones below are implemented in blkdev_locked_ioctl,
- * but we call blkdev_ioctl, which gets the lock for us
- */
- case BLKRRPART:
- return blkdev_ioctl(inode, file, cmd,
- (unsigned long)compat_ptr(arg));
- case BLKBSZSET_32:
- return blkdev_ioctl(inode, file, BLKBSZSET,
- (unsigned long)compat_ptr(arg));
- case BLKPG:
- return compat_blkpg_ioctl(inode, file, cmd, compat_ptr(arg));
- }
-
- lock_kernel();
- ret = compat_blkdev_locked_ioctl(inode, file, bdev, cmd, arg);
- /* FIXME: why do we assume -> compat_ioctl needs the BKL? */
- if (ret == -ENOIOCTLCMD && disk->fops->compat_ioctl)
- ret = disk->fops->compat_ioctl(file, cmd, arg);
- unlock_kernel();
-
- if (ret != -ENOIOCTLCMD)