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Message-ID: <5c176101cd5fd8e629b18380bf7678ea6c6a5d63.camel@devuan.org> Date: Fri, 09 May 2025 21:35:59 +0300 From: Boian Bonev <bbonev@...uan.org> To: linux-kernel@...r.kernel.org Cc: Balbir Singh <bsingharora@...il.com>, Yang Yang <yang.yang29@....com.cn>, Wang Yaxin <wang.yaxin@....com.cn>, Kun Jiang <jiang.kun2@....com.cn>, xu xin <xu.xin16@....com.cn>, Andrew Morton <akpm@...ux-foundation.org> Subject: Bug 220102 - struct taskstats breaks backward compatibility since version 15 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. 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. https://bugzilla.kernel.org/show_bug.cgi?id=220102 With best regards, b.
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