linux-kernel - Re: [PATCH] release quicklist before free

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Message-Id: <1185215232.2573.72.camel@imap.mvista.com>
Date:	Mon, 23 Jul 2007 11:27:12 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Peter Zijlstra <peterz@...radead.org>, paulmck@...ux.vnet.ibm.com,
	linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org
Subject: Re: [PATCH] release quicklist before free_page

On Mon, 2007-07-23 at 20:23 +0200, Ingo Molnar wrote:
> 
> how about: "if you've got some time then please also add a few comments, 
> because the code was quite non-obvious to me and I misunderstood it when 
> I tried to fix it. Thanks."

Not exactly what I was thinking of .. More like,

"LOCKING NOTE: This code uses the fact that get_cpu_var disables
preemption to maintain cpu affinity during the call to free_page()
otherwise it might free pages on another cpu."

(btw, your comment above comes off very snide, which I don't appreciate.
I haven't done anything that remotely warrants that.)

Daniel

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