linux-kernel - Re: [PATCH v2] mm: clarify GFP_ATOMIC/GFP

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Message-ID: <aUZPCFLIeAgdkioq@kernel.org>
Date: Sat, 20 Dec 2025 09:23:52 +0200
From: Mike Rapoport <rppt@...nel.org>
To: Brendan Jackman <jackmanb@...gle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	David Hildenbrand <david@...nel.org>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Michal Hocko <mhocko@...e.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Clark Williams <clrkwllms@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-rt-devel@...ts.linux.dev
Subject: Re: [PATCH v2] mm: clarify GFP_ATOMIC/GFP_NOWAIT doc-comment

On Fri, Dec 19, 2025 at 11:32:18AM +0000, Brendan Jackman wrote:
> The current description of contexts where it's invalid to make
> GFP_ATOMIC and GFP_NOWAIT calls is rather vague.
> 
> Replace this with a direct description of the actual contexts of concern
> and refer to the RT docs where this is explained more discursively.
> 
> While rejigging this prose, also move the documentation of GFP_NOWAIT to
> the GFP_NOWAIT section.
> 
> Link: https://lore.kernel.org/all/d912480a-5229-4efe-9336-b31acded30f5@suse.cz/
> Acked-by: Vlastimil Babka <vbabka@...e.cz>
> Acked-by: David Hildenbrand (Red Hat) <david@...nel.org>
> Signed-off-by: Brendan Jackman <jackmanb@...gle.com>

Acked-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

> ---
> Changes in v2:
> - Specified section in docs reference
> - Link to v1: https://lore.kernel.org/all/DF0J58HOVLL4.2E16Q87D2UXRW@google.com/
> ---
>  include/linux/gfp_types.h | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)

-- 
Sincerely yours,
Mike.