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Sun, 08 Feb 2026 18:53:02 -0800 (PST) Received: from localhost.localdomain ([116.128.244.171]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35621177896sm6302649a91.15.2026.02.08.18.52.55 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 08 Feb 2026 18:53:02 -0800 (PST) From: Chengkaitao To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, shuah@kernel.org Cc: chengkaitao@kylinos.cn, leon.hwang@linux.dev, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH 0/2] bpf: Introduce the bpf_list_del API Date: Mon, 9 Feb 2026 10:52:48 +0800 Message-ID: <20260209025250.55750-1-pilgrimtao@gmail.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Kaitao Cheng In BPF, a list can only be used to implement a stack structure. Due to an incomplete API set, only FIFO or LIFO operations are supported. We propose introducing the bpf_list_del API, which allows users to directly remove a node from the list if the node pointer is obtained beforehand. This patch enhances the BPF list API, making it more list-like. Kaitao Cheng (2): bpf: Introduce the bpf_list_del kfunc. selftests/bpf: Add test cases for bpf_list_del kernel/bpf/helpers.c | 19 +++++++++ kernel/bpf/verifier.c | 6 ++- .../testing/selftests/bpf/bpf_experimental.h | 11 +++++ .../selftests/bpf/progs/refcounted_kptr.c | 41 +++++++++++++++++++ 4 files changed, 76 insertions(+), 1 deletion(-) -- 2.50.1 (Apple Git-155)