linux-kernel - Re: [PATCH] bpf: replace kvfree with kfree for kzalloc memory

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Message-ID: <09db6175-070f-46c9-adb1-05e0355d7183@web.de>
Date: Mon, 11 Aug 2025 15:25:14 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Qianfeng Rong <rongqianfeng@...o.com>, bpf@...r.kernel.org,
 Andrii Nakryiko <andrii@...nel.org>, Alexei Starovoitov <ast@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>, Eduard Zingerman
 <eddyz87@...il.com>, Hao Luo <haoluo@...gle.com>,
 Jiri Olsa <jolsa@...nel.org>, John Fastabend <john.fastabend@...il.com>,
 KP Singh <kpsingh@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>,
 Song Liu <song@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>,
 Yonghong Song <yonghong.song@...ux.dev>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] bpf: replace kvfree with kfree for kzalloc memory

…
> Replace kvfree() with kfree() to avoid unnecessary is_vmalloc_addr()
> check in kvfree().

Under which circumstances would you become interested to apply the attribute “__free”
(also in the affected if branch)?
https://elixir.bootlin.com/linux/v6.16/source/include/linux/slab.h#L476

Regards,
Markus