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Re: [Lse-tech] Re: A common layer for Accounting packages

To: jamal <hadi@xxxxxxxxxx>
Subject: Re: [Lse-tech] Re: A common layer for Accounting packages
From: Thomas Graf <tgraf@xxxxxxx>
Date: Mon, 28 Feb 2005 14:53:07 +0100
Cc: Andrew Morton <akpm@xxxxxxxx>, Guillaume Thouvenin <guillaume.thouvenin@xxxxxxxx>, kaigai@xxxxxxxxxxxxx, marcelo.tosatti@xxxxxxxxxxxx, "David S. Miller" <davem@xxxxxxxxxx>, jlan@xxxxxxx, lse-tech@xxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, elsa-devel@xxxxxxxxxxxxxxxxxxxxx
In-reply-to: <1109598010.2188.994.camel@jzny.localdomain>
References: <20050224212839.7953167c.akpm@osdl.org> <20050227094949.GA22439@logos.cnet> <4221E548.4000008@ak.jp.nec.com> <20050227140355.GA23055@logos.cnet> <42227AEA.6050002@ak.jp.nec.com> <1109575236.8549.14.camel@frecb000711.frec.bull.fr> <20050227233943.6cb89226.akpm@osdl.org> <1109592658.2188.924.camel@jzny.localdomain> <20050228132051.GO31837@postel.suug.ch> <1109598010.2188.994.camel@jzny.localdomain>
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* jamal <1109598010.2188.994.camel@xxxxxxxxxxxxxxxx> 2005-02-28 08:40
> 
> netlink broadcast or a wrapper around it.
> Why even bother doing the check with netlink_has_listeners()?

To implement the master enable/disable switch they want. The messages
don't get send out anyway but why bother doing all the work if nothing
will get send out in the end? It implements a well defined flag
controlled by open/close on fds (thus handles dying applications)
stating whether the whole code should be enabled or disabled. It is of
course not needed to avoid sending unnecessary messages.

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