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Date: Wed, 29 Apr 2020 07:17:06 -0700
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH v2 16/20] mm: remove early_pfn_in_nid() and
 CONFIG_NODES_SPAN_OTHER_NODES
Message-ID: <20200429141706.GA25142@infradead.org>
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To: Mike Rapoport <rppt@kernel.org>
Cc: Rich Felker <dalias@libc.org>, linux-ia64@vger.kernel.org, linux-doc@vger.kernel.org, Catalin Marinas <catalin.marinas@arm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, x86@kernel.org, Michal Hocko <mhocko@kernel.org>, "James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>, Max Filippov <jcmvbkbc@gmail.com>, Guo Ren <guoren@kernel.org>, Ley Foon Tan <ley.foon.tan@intel.com>, sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, Greg Ungerer <gerg@linux-m68k.org>, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Baoquan He <bhe@redhat.com>, Jonathan Corbet <corbet@lwn.net>, linux-hexagon@vger.kernel.org, Helge Deller <deller@gmx.de>, linux-sh@vger.kernel.org, Russell King <linux@armlinux.org.uk>, linux-csky@vger.kernel.org, Mike Rapoport <rppt@linux.ibm.com>, Geert Uytterhoeven <geert@linux-m68k.org>, Hoan Tran <Hoan@os.amperecomputing.com>, Mark Salter <msalter@redhat.com>, Matt Turner <mattst88@gmail.com>, linux-snps-arc@lists.infradead.org, uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, Nick Hu <nickhu@andestech.com>, linux-um@lists.infradead.org, linux-mips@vger.kernel.org, Richard Weinberger <richard@nod.at>, linux-m68k@lists.linux-m68k.org, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Qian Cai <cai@lca.pw>, Greentime Hu <green.hu@gmail.com>, Paul Walmsley <paul.walmsley@sifive.com>, Stafford Horne <shorne@gmail.com>, Guan Xuetao <gxt@pku.edu.cn>, linux-arm-kernel@lists.infradead.org, Michal Simek <monstr@monstr.eu>, Tony Luck <tony.luck@intel.com>, Yoshinori Sato <ysato@users.sourceforge.jp>, linux-parisc@vger.kernel.org, linux-mm@kvack.org, Vineet Gupta <vgupta@synopsys.com>, Brian Cain <bcain@codeaurora.org>, linux-kernel@vger.kernel.org, openrisc@lists.librecores.org, linux-alpha@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>, linuxppc-dev@lists.ozlabs.org, "David S. Miller" <davem@davemloft.net>
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On Wed, Apr 29, 2020 at 03:11:22PM +0300, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
> 
> The commit f47ac088c406 ("mm: memmap_init: iterate over memblock regions
> rather that check each PFN") made early_pfn_in_nid() obsolete and since
> CONFIG_NODES_SPAN_OTHER_NODES is only used to pick a stub or a real
> implementation of early_pfn_in_nid() it is also not needed anymore.

I don't think you can quote a commit id for something that hasn't been
commited to mainline yet.  Then again I would have just merged this
patch into the one that obsoleted early_pfn_in_nid anyway.