linux-kernel - Re: [PATCH] ipc: always handle a new value of auto

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Message-ID: <20140814133449.GB15307@paralelels.com>
Date:	Thu, 14 Aug 2014 17:34:50 +0400
From:	Andrew Vagin <avagin@...allels.com>
To:	Manfred Spraul <manfred@...orfullife.com>
CC:	Andrey Vagin <avagin@...nvz.org>, <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	Mathias Krause <minipli@...glemail.com>,
	Joe Perches <joe@...ches.com>,
	Davidlohr Bueso <davidlohr@...com>
Subject: Re: [PATCH] ipc: always handle a new value of auto_msgmni

On Thu, Aug 14, 2014 at 11:37:45AM +0200, Manfred Spraul wrote:
> Hi Andrey,
> 
> On 08/13/2014 03:21 PM, Andrey Vagin wrote:
> >proc_dointvec_minmax() returns zero, if a new value has been set.
> >So we don't need to check all charectes have been handled.
> What do you use auto_msgmni for?

We disable it to check that criu restores a value of the msgmni sysctl correctly.

https://github.com/xemul/criu/blob/master/test/zdtm/live/static/ipc_namespace.c

> 
> I would propose to remove the whole logic - just always allow 32000 message
> queues.

I don't have objections.

> 
> --
>     Manfred
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