linux-kernel - Re: [PATCH] Documentation/sysctl: coredump: add %F for pidfd number

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Message-ID: <87y0tkc0gx.fsf@trenco.lwn.net>
Date: Sat, 21 Jun 2025 14:18:38 -0600
From: Jonathan Corbet <corbet@....net>
To: Salvatore Bonaccorso <carnil@...ian.org>, Christian Brauner
 <brauner@...nel.org>
Cc: Luca Boccassi <luca.boccassi@...il.com>, Oleg Nesterov
 <oleg@...hat.com>, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, Salvatore Bonaccorso <carnil@...ian.org>
Subject: Re: [PATCH] Documentation/sysctl: coredump: add %F for pidfd number

Salvatore Bonaccorso <carnil@...ian.org> writes:

> In commit b5325b2a270f ("coredump: hand a pidfd to the usermode coredump
> helper") a new core_pattern specifier, %F, was added to provide a pidfs
> to the usermode helper process referring to the crashed process.
>
> Update the documentation to include the new core_pattern specifier.
>
> Link: https://github.com/systemd/systemd/pull/37125
> Link: https://lwn.net/Articles/1024160/
> Signed-off-by: Salvatore Bonaccorso <carnil@...ian.org>
> ---
>  Documentation/admin-guide/sysctl/kernel.rst | 1 +
>  1 file changed, 1 insertion(+)

Applied, thanks.

> FWIW, I was not sure if I should add a 'Fixes: b5325b2a270f
> ("coredump: hand a pidfd to the usermode coredump helper") to make
> sure that it get backported as well to the series where a backport of
> b5325b2a270f landed.

A Fixes tag is not sufficient to ensure that a patch is backported to
previous kernels - you must CC stable@...r.kernel.org to be sure.  In
this case, it's a documentation tweak for a 6.16 change, so I don't
think there is a lot of urgency here.

Thanks,

jon