On Thu, Aug 15, 2019 at 07:37:53AM +1000, Dave Chinner wrote: > > @@ -576,7 +576,7 @@ xfs_file_compat_ioctl( > > case XFS_IOC_SCRUB_METADATA: > > case XFS_IOC_BULKSTAT: > > case XFS_IOC_INUMBERS: > > - return xfs_file_ioctl(filp, cmd, p); > > + return xfs_file_ioctl(filp, cmd, (unsigned long)arg); > > I don't really like having to sprinkle special casts through the > code because of this. True. But the proper fix is to not do the indirection through xfs_file_ioctl but instead to call xfs_ioc_scrub_metadata, xfs_ioc_bulkstat, etc directly which all take a void __user arguments already.