linux-kernel - Re: [PATCH] docs: admin-guide: update to current minimum pipe size default

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87seigxhf5.fsf@trenco.lwn.net>
Date: Mon, 28 Jul 2025 13:07:58 -0600
From: Jonathan Corbet <corbet@....net>
To: Štěpán Němec <stepnem@...k.net>
Cc: "Alex Xu (Hello71)" <alex_y_xu@...oo.ca>, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, Štěpán Němec
 <stepnem@...k.net>
Subject: Re: [PATCH] docs: admin-guide: update to current minimum pipe size
 default

Štěpán Němec <stepnem@...k.net> writes:

> Fixes: 46c4c9d1beb7 ("pipe: increase minimum default pipe size to 2 pages")
> Signed-off-by: Štěpán Němec <stepnem@...k.net>
> ---
> The relevant man page was updated in
> 7543e84442d7 ("pipe.7: Document change to default pipe size when soft limit is exceeded")
> https://lore.kernel.org/linux-man/20240829204448.2027276-2-kstewart@efficios.com/
> ---
>  Documentation/admin-guide/sysctl/fs.rst | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/admin-guide/sysctl/fs.rst b/Documentation/admin-guide/sysctl/fs.rst
> index 6c54718c9d04ba0e690d064bc50f97ef883234fa..9b7f65c3efd8020d62df5b00388c48f2435da3e3 100644
> --- a/Documentation/admin-guide/sysctl/fs.rst
> +++ b/Documentation/admin-guide/sysctl/fs.rst
> @@ -164,8 +164,8 @@ pipe-user-pages-soft
>  --------------------
>  
>  Maximum total number of pages a non-privileged user may allocate for pipes
> -before the pipe size gets limited to a single page. Once this limit is reached,
> -new pipes will be limited to a single page in size for this user in order to
> +before the pipe size gets limited to two pages. Once this limit is reached,
> +new pipes will be limited to two pages in size for this user in order to
>  limit total memory usage, and trying to increase them using ``fcntl()`` will be

This seems like a reasonable change, but can I ask you to resubmit it
with a proper changelog, please?

Thanks,

jon