To: "Bryan O'Sullivan" <bos@pathscale.com>
Cc: Greg KH <gregkh@suse.de>, rolandd@cisco.com, akpm@osdl.org,
       davem@davemloft.net, linux-kernel@vger.kernel.org,
       openib-general@openib.org
Subject: Re: [PATCH 9 of 20] ipath - char devices for diagnostics and lightweight subnet management
References: <eac2ad3017b5f160d24c.1141922822@localhost.localdomain>
	<ada8xrjfbd8.fsf@cisco.com>
	<1141948367.10693.53.camel@serpentine.pathscale.com>
	<20060310004505.GB17050@suse.de>
	<1141951725.10693.88.camel@serpentine.pathscale.com>
	<20060310010403.GC9945@suse.de>
	<1141965696.14517.4.camel@camp4.serpentine.com>
	<ada7j72detl.fsf@cisco.com>
	<1141998230.28926.4.camel@localhost.localdomain>
	<ada1wxab533.fsf@cisco.com>
	<1142011952.29925.54.camel@serpentine.pathscale.com>
From: Roland Dreier <rdreier@cisco.com>
Date: Fri, 10 Mar 2006 14:20:54 -0800
In-Reply-To: <1142011952.29925.54.camel@serpentine.pathscale.com> (Bryan O'Sullivan's message of "Fri, 10 Mar 2006 09:32:32 -0800")
Message-ID: <adawtf29c1l.fsf@cisco.com>
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    Bryan> Probably not much.  The motivation was to ensure that if it
    Bryan> got incremented during an iteration, whoever was iterating
    Bryan> would see the update in a timely fashion.

But as far as I can see, you never do atomic_inc() -- only
atomic_set() under a spinlock.
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