linux-kernel - Re: [PATCH v2 2.6.38-rc8-tip 1/20] 1: mm: Move replace

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Message-ID: <20110314172908.GP24254@linux.vnet.ibm.com>
Date:	Mon, 14 Mar 2011 22:59:08 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	Linux-mm <linux-mm@...ck.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Oleg Nesterov <oleg@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	SystemTap <systemtap@...rces.redhat.com>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	Roland McGrath <roland@...k.frob.com>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH v2 2.6.38-rc8-tip 1/20]  1: mm: Move replace_page() to
 mm/memory.c

> > 
> > As discussed in IRC, moving and removing the static attribute had to
> > be one patch so that mm/ksm.c compiles correctly. The other option we
> > have is to remove the static attribute first and then moving the
> > function.
> 
> Hmm, maybe that may be a good idea. Since it is really two changes. One
> is to make it global for other usages. I'm not even sure why you moved
> it. The change log for the move can explain that.
> 

unlike mm/memory.c; mm/ksm.c is compiled only when CONFIG_KSM is set.
So if we dont move it out of ksm.c; we will have to make uprobes
dependent on CONFIG_KSM. Since replace_page is the only function we are
interested in, its better to move it out of ksm.c, rather than
making uprobes dependent on CONFIG_KSM.


> -- Steve
> 
> > 
> 
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