kern/131506: pipes in forked procs sometimes hang under Linux emulation 2.6.16

[Arno J. Klaassen]

Takahiro Kurosawa <takahiro.kurosawa at gmail.com> writes:

> It seems that vfork/exec synchronization was changed recently
> but the linux emulation code keeps using the obsolete mechanism.
>
> The attached patch may fix the problem.

yes it seems to do so. Thank you for finding this and
thanks to kib at FreeBSD.org for committing.

Best regards, Arno