linux-ext4 - Re: [PATCH 09/12] powerpc: Remove checks for devmap pages and PMDs/PUDs

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Message-ID: <20250603134905.GJ386142@ziepe.ca>
Date: Tue, 3 Jun 2025 10:49:05 -0300
From: Jason Gunthorpe <jgg@...pe.ca>
To: Alistair Popple <apopple@...dia.com>
Cc: linux-mm@...ck.org, gerald.schaefer@...ux.ibm.com,
	dan.j.williams@...el.com, 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 09/12] powerpc: Remove checks for devmap pages and
 PMDs/PUDs

On Thu, May 29, 2025 at 04:32:10PM +1000, Alistair Popple wrote:
> PFN_DEV no longer exists. This means no devmap PMDs or PUDs will be
> created, so checking for them is redundant. Instead mappings of pages that
> would have previously returned true for pXd_devmap() will return true for
> pXd_trans_huge()
> 
> Signed-off-by: Alistair Popple <apopple@...dia.com>
> ---
>  arch/powerpc/mm/book3s64/hash_hugepage.c |  2 +-
>  arch/powerpc/mm/book3s64/hash_pgtable.c  |  3 +--
>  arch/powerpc/mm/book3s64/hugetlbpage.c   |  2 +-
>  arch/powerpc/mm/book3s64/pgtable.c       | 10 ++++------
>  arch/powerpc/mm/book3s64/radix_pgtable.c |  5 ++---
>  arch/powerpc/mm/pgtable.c                |  2 +-
>  6 files changed, 10 insertions(+), 14 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason