linux-kernel - Re: [PATCH 1/4] mm: Remove dependency on CONFIG_FLATMEM from online

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Message-ID: <alpine.DEB.2.00.1105121223500.2407@chino.kir.corp.google.com>
Date:	Thu, 12 May 2011 12:26:22 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Daniel Kiper <dkiper@...-space.pl>
cc:	ian.campbell@...rix.com, akpm@...ux-foundation.org,
	andi.kleen@...el.com, haicheng.li@...ux.intel.com,
	fengguang.wu@...el.com, jeremy@...p.org, konrad.wilk@...cle.com,
	dan.magenheimer@...cle.com, v.tolstov@...fip.ru, pasik@....fi,
	dave@...ux.vnet.ibm.com, wdauchy@...il.com,
	xen-devel@...ts.xensource.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 1/4] mm: Remove dependency on CONFIG_FLATMEM from
 online_page()

On Thu, 12 May 2011, Daniel Kiper wrote:

> > > Memory hotplug code strictly depends on CONFIG_SPARSEMEM.
> > > It means that code depending on CONFIG_FLATMEM in online_page()
> > > is never compiled. Remove it because it is not needed anymore.
> > >
> > > Signed-off-by: Daniel Kiper <dkiper@...-space.pl>
> >
> > The code you're patching depends on CONFIG_MEMORY_HOTPLUG_SPARSE, so this
> > is valid.  The changelog should be updated to reflect that, however.
> >
> > Acked-by: David Rientjes <rientjes@...gle.com>
> 
> No problem, however, this bundle of patches was added to the -mm tree.
> In this situation should I repost whole bundle with relevant changes
> or post only those two patches requested by you ??? For which tree
> should I prepare new version of patches ???
> 

No, I would just reply to the email notification you received when the 
patch went into -mm saying that the changelog should be adjusted to read 
something like

	online_pages() is only compiled for CONFIG_MEMORY_HOTPLUG_SPARSE,
	so there is no need to support CONFIG_FLATMEM code within it.

	This patch removes code that is never used.
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