linux-kernel - Re: [PATCH 01/12] mm: Remove PFN_MAP, PFN_SG_CHAIN and PFN_SG

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Message-ID: <20250602045427.GA21646@lst.de>
Date: Mon, 2 Jun 2025 06:54:27 +0200
From: Christoph Hellwig <hch@....de>
To: Alistair Popple <apopple@...dia.com>
Cc: linux-mm@...ck.org, gerald.schaefer@...ux.ibm.com,
	dan.j.williams@...el.com, jgg@...pe.ca, willy@...radead.org,
	david@...hat.com, linux-kernel@...r.kernel.org,
	nvdimm@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org,
	jhubbard@...dia.com, hch@....de, zhang.lyra@...il.com,
	debug@...osinc.com, bjorn@...nel.org, balbirs@...dia.com,
	lorenzo.stoakes@...cle.com, linux-arm-kernel@...ts.infradead.org,
	loongarch@...ts.linux.dev, linuxppc-dev@...ts.ozlabs.org,
	linux-riscv@...ts.infradead.org, linux-cxl@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, John@...ves.net
Subject: Re: [PATCH 01/12] mm: Remove PFN_MAP, PFN_SG_CHAIN and PFN_SG_LAST

On Thu, May 29, 2025 at 04:32:02PM +1000, Alistair Popple wrote:
> The PFN_MAP flag is no longer used for anything, so remove it. The
> PFN_SG_CHAIN and PFN_SG_LAST flags never appear to have been used so
> also remove them.
> 
> Signed-off-by: Alistair Popple <apopple@...dia.com>
> Reviewed-by: Christoph Hellwig <hch@....de>

FYI, unlike the rest of the series that has some non-trivial work
this feels like a 6.16-rc candidate as it just removes dead code
and we'd better get that in before a new user or even just a conflict
sneaks in.