linux-kernel - Re: [PATCH 1/3] uprobes/core: Remove redundant lock_page/unlock

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Message-ID: <1338474158.13348.346.camel@gandalf.stny.rr.com>
Date:	Thu, 31 May 2012 10:22:38 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Anton Arapov <anton@...hat.com>
Subject: Re: [PATCH 1/3] uprobes/core: Remove redundant lock_page/unlock_page

On Thu, 2012-05-31 at 13:58 +0200, Peter Zijlstra wrote:
> On Thu, 2012-05-31 at 17:16 +0530, Srikar Dronamraju wrote:
> > From: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
> > 
> > No need to lock the page when copying the opcode in read_opcode().
> 
> It would be good if the changelog said _why_ this is so :-)

I thought the same thing when I read it.

-- Steve


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