linux-kernel - Re: [PATCH] IPv4/IPv6: update sysctl files

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Date:	Tue, 07 Apr 2009 19:41:10 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Shen Feng <shen@...fujitsu.com>
Cc:	davem@...emloft.net, Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] IPv4/IPv6: update sysctl files

Shen Feng <shen@...fujitsu.com> writes:

> Now the following sysctl files in /proc/sys/net/ipv4 are used by
> both IPv4 and IPv6.
> tcp_mem  tcp_rmem  tcp_wmem
> udp_mem  udp_rmem_min  udp_wmem_min
> Putting them in /proc/sys/net/ipv4 is not a good choice.
>
> So move tcp_mem  tcp_rmem  tcp_wmem to /proc/sys/net/tcp and
> move udp_mem  udp_rmem_min  udp_wmem_min to /poc/sys/net/udp.

How badly does this blow up when you enable sysctl_check?
You just enabled new binary sysctl mappings, which is big no-no.

Further how many user space scripts did you break that touch those
files?  This is an ABI change.

Eric
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