linux-kernel - Re: [PATCH] huge_memory.c: document huge page splitting rules more thoroughly

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Message-ID: <B9A3BBFA-5DE2-4C72-9CB0-38086001577F@nvidia.com>
Date: Mon, 25 Mar 2024 09:28:17 -0400
From: Zi Yan <ziy@...dia.com>
To: John Hubbard <jhubbard@...dia.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
 David Hildenbrand <david@...hat.com>, Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH] huge_memory.c: document huge page splitting rules more
 thoroughly

On 25 Mar 2024, at 0:44, John Hubbard wrote:

> 1. Add information about the behavior of huge page splitting, with
>    respect to page/folio refcounts, and gup/pup pins.
>
> 2. Update and clarify the existing documentation, to compensate for the
>    ravages of time and code change.
>
> Cc: David Hildenbrand <david@...hat.com>
> Cc: Matthew Wilcox <willy@...radead.org>
> Cc: Zi Yan <ziy@...dia.com>
>
> Signed-off-by: John Hubbard <jhubbard@...dia.com>
> ---
>
> Hi David, Matthew, Zi,
>
> This is a follow up from our short email thread of a week ago [1].
>
> Zi, I've inflicted some minor violence upon your original wording, and
> moved it into a Prerequisites section (item 4).
>
>
> [1] https://lore.kernel.org/all/d9c06bec-805f-4d53-9f91-6b8ad29fcb6b@redhat.com/
>
> thanks,
> John Hubbard
> NVIDIA
>
>  mm/huge_memory.c | 42 +++++++++++++++++++++++++++---------------
>  1 file changed, 27 insertions(+), 15 deletions(-)
>
LGTM. Thanks. Reviewed-by: Zi Yan <ziy@...dia.com>

--
Best Regards,
Yan, Zi

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