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Message-ID: <1322492478.2921.145.camel@twins>
Subject: Re: [PATCH v7 3.2-rc2 9/30] uprobes: Background page replacement.
From: Peter Zijlstra <peterz@infradead.org>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Oleg Nesterov <oleg@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>, Linux-mm <linux-mm@kvack.org>,
        Ingo Molnar <mingo@elte.hu>, Andi Kleen <andi@firstfloor.org>,
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        Steven Rostedt <rostedt@goodmis.org>,
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        Thomas Gleixner <tglx@linutronix.de>,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        Anton Arapov <anton@redhat.com>,
        Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
        Jim Keniston <jkenisto@linux.vnet.ibm.com>,
        Stephen Wilson <wilsons@start.ca>
Date: Mon, 28 Nov 2011 16:01:18 +0100
In-Reply-To: <20111118110823.10512.74338.sendpatchset@srdronam.in.ibm.com>
References: <20111118110631.10512.73274.sendpatchset@srdronam.in.ibm.com>
	 <20111118110823.10512.74338.sendpatchset@srdronam.in.ibm.com>
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On Fri, 2011-11-18 at 16:38 +0530, Srikar Dronamraju wrote:
> 
> Provides Background page replacement by
>  - cow the page that needs replacement.
>  - modify a copy of the cowed page.
>  - replace the cow page with the modified page
>  - flush the page tables.
> 
> Also provides additional routines to read an opcode from a given virtual
> address and for verifying if a instruction is a breakpoint instruction.

You again/still lost the reason why we duplicate bits of mm/ksm.c here.