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Date: Tue, 13 Oct 2009 09:19:53 +0400
From: Alexey Dobriyan <adobriyan@gmail.com>
To: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, Oren Laadan <orenl@cs.columbia.edu>,
       serue@us.ibm.com, "Eric W. Biederman" <ebiederm@xmission.com>,
       Pavel Emelyanov <xemul@openvz.org>, Andrew Morton <akpm@osdl.org>,
       torvalds@linux-foundation.org, mikew@google.com, mingo@elte.hu,
       hpa@zytor.com, Nathan Lynch <nathanl@austin.ibm.com>, arnd@arndb.de,
       peterz@infradead.org, Louis.Rilling@kerlabs.com, roland@redhat.com,
       kosaki.motohiro@jp.fujitsu.com, randy.dunlap@oracle.com,
       linux-api@vger.kernel.org,
       Containers <containers@lists.linux-foundation.org>, sukadev@us.ibm.com
Subject: Re: [RFC][v8][PATCH 3/10]: Make pid_max a pid_ns property
Message-ID: <20091013051953.GA19895@x200>
References: <20091013044925.GA28181@us.ibm.com>
 <20091013045041.GC28435@us.ibm.com>
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On Mon, Oct 12, 2009 at 09:50:41PM -0700, Sukadev Bhattiprolu wrote:
> From: Serge Hallyn <serue@us.ibm.com>
> Subject: [RFC][v8][PATCH 3/10]: Make pid_max a pid_ns property
> 
> Remove the pid_max global, and make it a property of the
> pid_namespace.  When a pid_ns is created, it inherits
> the parent's pid_ns.
> 
> Fixing up sysctl (trivial akin to ipc version, but
> potentially tedious to get right for all CONFIG*
> combinations) is left for later.

pid_max is not pid_ns property, it's just sysctl to limit cpu time
during bitmap search. Just like vm.max_map_count limits kernel memory
used by VMAs.
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