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

[Kostik Belousov]

On Wed, Feb 18, 2009 at 01:20:02PM +0000, Takahiro Kurosawa wrote:
> The following reply was made to PR kern/131506; it has been noted by GNATS.
> 
> From: Takahiro Kurosawa <takahiro.kurosawa at gmail.com>
> To: bug-followup at freebsd.org, arno at heho.snv.jussieu.fr
> Cc:  
> Subject: Re: kern/131506: pipes in forked procs sometimes hang under Linux 
> 	emulation 2.6.16
> Date: Wed, 18 Feb 2009 21:44:13 +0900
> 
>  --000e0cd156a4ef843b046330c6a5
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>  (resending to bug-followup@, sorry if duplicate)
>  
>  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.
>  
>  --000e0cd156a4ef843b046330c6a5
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>  --000e0cd156a4ef843b046330c6a5--

Please, resend the patch without base64-encoding, best as a plain/text
attachment.
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