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

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Message-ID: <20110516075849.GB6393@router-fw-old.local.net-space.pl>
Date:	Mon, 16 May 2011 09:58:49 +0200
From:	Daniel Kiper <dkiper@...-space.pl>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Daniel Kiper <dkiper@...-space.pl>, 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, May 12, 2011 at 12:26:22PM -0700, David Rientjes wrote:
> 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.

Please look into attachments.

If you have any questions please drop me a line.

Daniel

View attachment "mm-enable-set_page_section-only-if-config_sparsemem-and-config_sparsemem_vmemmap.patch" of type "text/plain" (5056 bytes)

View attachment "mm-remove-dependency-on-config_flatmem-from-online_page.patch" of type "text/plain" (4020 bytes)