Re: [PATCH 01/12] mm: Remove PFN_MAP, PFN_SG_CHAIN and PFN_SG_LAST

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To: Alistair Popple <apopple@xxxxxxxxxx>, linux-mm@xxxxxxxxx
Subject: Re: [PATCH 01/12] mm: Remove PFN_MAP, PFN_SG_CHAIN and PFN_SG_LAST
From: David Hildenbrand <david@xxxxxxxxxx>
Date: Fri, 30 May 2025 11:33:45 +0200
Cc: gerald.schaefer@xxxxxxxxxxxxx, dan.j.williams@xxxxxxxxx, jgg@xxxxxxxx, willy@xxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, nvdimm@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, jhubbard@xxxxxxxxxx, hch@xxxxxx, zhang.lyra@xxxxxxxxx, debug@xxxxxxxxxxxx, bjorn@xxxxxxxxxx, balbirs@xxxxxxxxxx, lorenzo.stoakes@xxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, loongarch@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-cxl@xxxxxxxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, John@xxxxxxxxxx
In-reply-to: <cb45fa705b2eefa1228e262778e784e9b3646827.1748500293.git-series.apopple@nvidia.com>
Organization: Red Hat
References: <cover.541c2702181b7461b84f1a6967a3f0e823023fcc.1748500293.git-series.apopple@nvidia.com> <cb45fa705b2eefa1228e262778e784e9b3646827.1748500293.git-series.apopple@nvidia.com>
User-agent: Mozilla Thunderbird

On 29.05.25 08:32, 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@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---


With SPECIAL mentioned as well

Acked-by: David Hildenbrand <david@xxxxxxxxxx>

--
Cheers,

David / dhildenb

References:
- [PATCH 00/12] mm: Remove pXX_devmap page table bit and pfn_t type
  - From: Alistair Popple
- [PATCH 01/12] mm: Remove PFN_MAP, PFN_SG_CHAIN and PFN_SG_LAST
  - From: Alistair Popple

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