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From: John Baldwin <jhb@freebsd.org>
To: freebsd-arch@freebsd.org, peter@freebsd.org
Cc: Konstantin Belousov <kostikbel@gmail.com>
Subject: Re: Removal of the 6.x kernel compat code from libc
Date: Fri, 17 Apr 2015 09:29:38 -0400
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On Friday, April 17, 2015 10:59:42 AM Konstantin Belousov wrote:
> Our libc changes in sync with the kernel, but switching of libc to use
> new interfaces means that upgrade of the userspace becomes the flag day.
> People usually add backward-compatible shims for libc to use older
> interfaces on old kernels.
> 
> There is no reason to keep the compat shims after many years of the
> transition.  Patch below purges the compat code for pre-r171219, which
> added pad-less versions of syscalls taking off_t, and for r177911, which
> handles the struct flock/oflock transition.  This is 6.x/7.x compat,
> we absolutely not support running HEAD libc on such old kernels.

I think this is fine.

-- 
John Baldwin