linux-kernel - Re: [PATCH v6 00/26] fs/dax: Fix ZONE

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Message-ID: <6780c6d43d73e_2aff42943b@dwillia2-xfh.jf.intel.com.notmuch>
Date: Thu, 9 Jan 2025 23:05:56 -0800
From: Dan Williams <dan.j.williams@...el.com>
To: Alistair Popple <apopple@...dia.com>, <akpm@...ux-foundation.org>,
	<dan.j.williams@...el.com>, <linux-mm@...ck.org>
CC: <alison.schofield@...el.com>, Alistair Popple <apopple@...dia.com>,
	<lina@...hilina.net>, <zhang.lyra@...il.com>,
	<gerald.schaefer@...ux.ibm.com>, <vishal.l.verma@...el.com>,
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	<linuxppc-dev@...ts.ozlabs.org>, <nvdimm@...ts.linux.dev>,
	<linux-cxl@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
	<linux-ext4@...r.kernel.org>, <linux-xfs@...r.kernel.org>,
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	<chenhuacai@...nel.org>, <kernel@...0n.name>, <loongarch@...ts.linux.dev>
Subject: Re: [PATCH v6 00/26] fs/dax: Fix ZONE_DEVICE page reference counts

Alistair Popple wrote:
> Main updates since v5:
> 
>  - Reworked patch 1 based on Dan's feedback.
> 
>  - Fixed build issues on PPC and when CONFIG_PGTABLE_HAS_HUGE_LEAVES
>    is no defined.
> 
>  - Minor comment formatting and documentation fixes.
> 
>  - Remove PTE_DEVMAP definitions from Loongarch which were added since
>    this series was initially written.
[..]
> 
> base-commit: e25c8d66f6786300b680866c0e0139981273feba

If this is going to go through nvdimm.git I will need it against a
mainline tag baseline. Linus will want to see the merge conflicts.

Otherwise if that merge commit is too messy, or you would rather not
rebase, then it either needs to go one of two options:

- Andrew's tree which is the only tree I know of that can carry
  patches relative to linux-next.

- Wait for v6.14-rc1 and get this into nvdimm.git early in the cycle
  when the conflict storm will be low.

Last I attempted the merge conflict resolution with v4, they were not
*that* bad. However, that rebase may need to keep some definitions
around to avoid compile breakage and the need to expand the merge commit
to carrying things like the Loongarch PTE_DEVMAP removal. I.e. move some
of the after-the-fact cleanups to a post merge branch.