From: "David Hildenbrand (Red Hat)" <david@kernel.org>
To: Richard Weinberger <richard@nod.at>, linux-mm@kvack.org
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
corbet@lwn.net, mhocko@suse.com, surenb@google.com,
rppt@kernel.org, vbabka@suse.cz, Liam.Howlett@oracle.com,
lorenzo.stoakes@oracle.com, akpm@linux-foundation.org,
Vladimir Davydov <vdavydov@virtuozzo.com>,
Konstantin Khlebnikov <koct9i@gmail.com>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH] pagemap: Update BUDDY flag documentation
Date: Mon, 24 Nov 2025 11:47:17 +0100 [thread overview]
Message-ID: <1a2329ef-50ff-4e48-87b4-3adc70ee8833@kernel.org> (raw)
In-Reply-To: <20251122211920.3410371-1-richard@nod.at>
On 11/22/25 22:19, Richard Weinberger wrote:
> Since v4.6 the BUDDY flag is set for _all_ pages in the block
> and no longer just for the first one.
> This change was introduced by:
> commit 832fc1de01ae ("/proc/kpageflags: return KPF_BUDDY for "tail" buddy pages")
>
> Strictly speaking, this was an ABI change, but as nobody has noticed
> since 2016, let's just update the documentation.
>
> Cc: Vladimir Davydov <vdavydov@virtuozzo.com>>
> Cc: Konstantin Khlebnikov <koct9i@gmail.com>
> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Linus Torvalds <torvalds@linux-foundation.org>
> Signed-off-by: Richard Weinberger <richard@nod.at>
> ---
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
--
Cheers
David
next prev parent reply other threads:[~2025-11-24 10:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-22 21:19 [PATCH] pagemap: Update BUDDY flag documentation Richard Weinberger
2025-11-23 9:29 ` Mike Rapoport
2025-11-24 10:47 ` David Hildenbrand (Red Hat) [this message]
2025-11-24 10:51 ` Lorenzo Stoakes
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