From: Andrew Morton <akpm@linux-foundation.org>
To: Boian Bonev <bbonev@devuan.org>
Cc: linux-kernel@vger.kernel.org,
Balbir Singh <bsingharora@gmail.com>,
Yang Yang <yang.yang29@zte.com.cn>,
Wang Yaxin <wang.yaxin@zte.com.cn>,
Kun Jiang <jiang.kun2@zte.com.cn>, xu xin <xu.xin16@zte.com.cn>
Subject: Re: Bug 220102 - struct taskstats breaks backward compatibility since version 15
Date: Fri, 9 May 2025 14:17:27 -0700 [thread overview]
Message-ID: <20250509141727.19b616d1c4a549d01656e5dd@linux-foundation.org> (raw)
In-Reply-To: <5c176101cd5fd8e629b18380bf7678ea6c6a5d63.camel@devuan.org>
On Fri, 09 May 2025 21:35:59 +0300 Boian Bonev <bbonev@devuan.org> wrote:
> Hello!
>
> Since version 15 (TASKSTATS_VERSION=15) the new layout of the structure
> adds fields in the middle of the structure, rendering all old software
> incompatible with newer kernels and software compiled against the new
> kernel headers incompatible with older kernels.
Yikes. Yes, we did change the versioning but such an incompatibility
seems undesirable and unnecessarily disruptive.
> I think that change has to be reverted and the added fields moved to
> the end of the structure. Also bumping the version to 16 after the
> change is a good idea in order for the userspace software to be able to
> distinguish the different formats.
Yes, please send along the patch. Include the suitable Fixes: and we
can backport this into the affected -stable kernels.
> https://bugzilla.kernel.org/show_bug.cgi?id=220102
next prev parent reply other threads:[~2025-05-09 21:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-09 18:35 Boian Bonev
2025-05-09 21:17 ` Andrew Morton [this message]
2025-05-10 11:45 ` Boian Bonev
2025-05-10 20:23 ` Andrew Morton
2025-05-10 22:03 ` Boian Bonev
2025-05-13 0:58 ` Andrew Morton
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