linux-kernel - Re: [PATCH bpf 1/2] bpf: use rqspinlock for lru map

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Message-ID: <CADxym3aLA=p1Brea_+BPcKS8swHm2fwNrAM54Ag2UOrG_njDEQ@mail.gmail.com>
Date: Fri, 31 Oct 2025 10:12:11 +0800
From: Menglong Dong <menglong8.dong@...il.com>
To: Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc: bot+bpf-ci@...nel.org, Martin KaFai Lau <martin.lau@...ux.dev>, 
	Leon Hwang <leon.hwang@...ux.dev>, Alexei Starovoitov <ast@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, Eduard <eddyz87@...il.com>, 
	Song Liu <song@...nel.org>, Yonghong Song <yonghong.song@...ux.dev>, 
	John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, 
	Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 
	Shuah Khan <shuah@...nel.org>, jiang.biao@...ux.dev, 
	LKML <linux-kernel@...r.kernel.org>, bpf <bpf@...r.kernel.org>, 
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>, Martin KaFai Lau <martin.lau@...nel.org>, 
	Chris Mason <clm@...a.com>, Ihor Solodrai <ihor.solodrai@...ux.dev>
Subject: Re: [PATCH bpf 1/2] bpf: use rqspinlock for lru map

On Fri, Oct 31, 2025 at 6:38 AM Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
>
> On Wed, Oct 29, 2025 at 8:38 PM <bot+bpf-ci@...nel.org> wrote:
> >
[......]
>
> AI is right. Here and in other places you can just leak the objects.
> res_spin_lock() is not a drop-in replacement.
> The whole thing needs to be thought through.

Yeah, I see. I'll analyse how to handle the "return" path.

Thanks!
Menglong Dong