linux-kernel - Re: [ANNOUNCE] mdb-2.6.27-rc2-ia32-08-07-08.patch

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Message-ID: <17163.166.70.238.44.1218131573.squirrel@webmail.wolfmountaingroup.com>
Date:	Thu, 7 Aug 2008 11:52:53 -0600 (MDT)
From:	jmerkey@...fmountaingroup.com
To:	"Stefan Richter" <stefanr@...6.in-berlin.de>
Cc:	jmerkey@...fmountaingroup.com, linux-kernel@...r.kernel.org
Subject: Re: [ANNOUNCE] mdb-2.6.27-rc2-ia32-08-07-08.patch

> I wrote:
>> jmerkey@...fmountaingroup.com wrote:
>>> check mdb-main.c -- I disable preemption before rspin_lock is
>>> attempted.
> ...
>> Then it is recommendable that you document the call context requirements
>> at the functions.
>
> An alternative would of course be to establish the non-preemptible
> context from inside the lock accessors, either redundantly to what the
> call site is doing, or instead of doing it at the call site if that can
> be arranged.
> --
> Stefan Richter
> -=====-==--- =--- --===
> http://arcgraph.de/sr/
>

It needs to get turned off right away, well before we get to the locks.

Keff


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