"tar tfv /dev/cd0" speedup patch

[Joerg Sonnenberger]

On Thu, Feb 18, 2010 at 07:34:59PM +0100, Juergen Lock wrote:
>  Ok here is a new version of the patch with these things fixed and the
> Linux case added:  (Linux case not tested yet, and yes I did this on
> stable/8.)

Why the check at all? Shouldn't devices that don't allow seek fail that?
E.g. for devices, just try to seek ahead and fallback to normal reading?

Joerg