From: Martin KaFai Lau <martin.lau@linux.dev>
To: Kui-Feng Lee <thinker.li@gmail.com>
Cc: sinquersw@gmail.com, kuifeng@meta.com, bpf@vger.kernel.org,
ast@kernel.org, song@kernel.org, kernel-team@meta.com,
andrii@kernel.org
Subject: Re: [PATCH bpf-next v3 3/7] bpf: support epoll from bpf struct_ops links.
Date: Mon, 20 May 2024 18:26:37 -0700 [thread overview]
Message-ID: <708a8b9f-45ce-48f1-9c6b-bbf226faf679@linux.dev> (raw)
In-Reply-To: <20240510002942.1253354-4-thinker.li@gmail.com>
On 5/9/24 5:29 PM, Kui-Feng Lee wrote:
> +static __poll_t bpf_struct_ops_map_link_poll(struct file *file,
> + struct poll_table_struct *pts)
> +{
> + struct bpf_struct_ops_link *st_link = file->private_data;
> +
> + poll_wait(file, &st_link->wait_hup, pts);
> +
> + return (st_link->map) ? 0 : EPOLLHUP;
nit. It should need a rcu_access_pointer(st_link->map).
next prev parent reply other threads:[~2024-05-21 1:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-10 0:29 [PATCH bpf-next v3 0/7] Notify user space when a struct_ops object is detached/unregistered Kui-Feng Lee
2024-05-10 0:29 ` [PATCH bpf-next v3 1/7] bpf: pass bpf_struct_ops_link to callbacks in bpf_struct_ops Kui-Feng Lee
2024-05-10 0:29 ` [PATCH bpf-next v3 2/7] bpf: enable detaching links of struct_ops objects Kui-Feng Lee
2024-05-21 1:22 ` Martin KaFai Lau
2024-05-21 7:30 ` Kui-Feng Lee
2024-05-21 18:09 ` Martin KaFai Lau
2024-05-10 0:29 ` [PATCH bpf-next v3 3/7] bpf: support epoll from bpf struct_ops links Kui-Feng Lee
2024-05-21 1:26 ` Martin KaFai Lau [this message]
2024-05-21 7:31 ` Kui-Feng Lee
2024-05-10 0:29 ` [PATCH bpf-next v3 4/7] bpf: export bpf_link_inc_not_zero Kui-Feng Lee
2024-05-10 0:29 ` [PATCH bpf-next v3 5/7] selftests/bpf: test struct_ops with epoll Kui-Feng Lee
2024-05-10 0:29 ` [PATCH bpf-next v3 6/7] selftests/bpf: detach a struct_ops link from the subsystem managing it Kui-Feng Lee
2024-05-21 22:56 ` Amery Hung
2024-05-22 0:31 ` Kui-Feng Lee
2024-05-22 17:33 ` Amery Hung
2024-05-10 0:29 ` [PATCH bpf-next v3 7/7] selftests/bpf: make sure bpf_testmod handling racing link destroying well Kui-Feng Lee
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