From: Jonathan Corbet <corbet@lwn.net>
To: Leah Rumancik <leah.rumancik@gmail.com>
Cc: bpf@vger.kernel.org, linux-block@vger.kernel.org,
orbekk@google.com, harshads@google.com, jasiu@google.com,
saranyamohan@google.com, tytso@google.com, bvanassche@google.com
Subject: Re: [RFC PATCH 3/4] bpf: add eBPF IO filter documentation
Date: Wed, 12 Aug 2020 11:50:11 -0600 [thread overview]
Message-ID: <20200812115011.337c0099@lwn.net> (raw)
In-Reply-To: <20200812163305.545447-4-leah.rumancik@gmail.com>
On Wed, 12 Aug 2020 16:33:04 +0000
Leah Rumancik <leah.rumancik@gmail.com> wrote:
Thanks for documenting this stuff, but...
> +======================
> +IO Filtering with eBPF
> +======================
> +
> +Bio requests can be filtered with the eBPF IO filter program type (BPF_PROG_TYPE_IO_FILTER). To use this program type, the kernel must be compiled with CONFIG_BPF_IO_FILTER.
> +
> +Attachment
> +==========
> +
> +IO filter programs can be attached to disks using the BPF_BIO_SUBMIT attach type. Up to 64 filter programs can be attached to a single disk. References to the attached programs are stored in the gendisk struct as a bpf_prog_array.
Please wrap your text to a reasonable column width just like with any
other kernel file.
Thanks,
jon
next prev parent reply other threads:[~2020-08-12 17:50 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-12 16:33 [RFC PATCH 0/4] block/bpf: add eBPF based block layer IO filtering Leah Rumancik
2020-08-12 16:33 ` [RFC PATCH 1/4] bpf: add new prog_type BPF_PROG_TYPE_IO_FILTER Leah Rumancik
2020-08-13 23:00 ` Martin KaFai Lau
2020-09-04 15:43 ` Leah Rumancik
2020-08-17 14:18 ` Bob Liu
2020-08-17 16:32 ` Alexei Starovoitov
2020-09-04 16:46 ` Leah Rumancik
2020-09-04 18:50 ` Alexei Starovoitov
2020-09-17 18:33 ` Leah Rumancik
2020-09-01 16:53 ` Leah Rumancik
2020-09-02 7:36 ` Bob Liu
2020-08-18 12:53 ` Jakub Sitnicki
2020-09-04 17:29 ` Leah Rumancik
2020-08-12 16:33 ` [RFC PATCH 2/4] bpf: add protect_gpt sample program Leah Rumancik
2020-08-13 22:58 ` Martin KaFai Lau
2020-09-01 16:33 ` Leah Rumancik
2020-08-12 16:33 ` [RFC PATCH 3/4] bpf: add eBPF IO filter documentation Leah Rumancik
2020-08-12 17:04 ` Bart Van Assche
2020-08-12 17:50 ` Jonathan Corbet [this message]
2020-09-01 15:35 ` Leah Rumancik
2020-08-12 16:33 ` [RFC PATCH 4/4] bpf: add BPF_PROG_TYPE_LSM to bpftool name array Leah Rumancik
2020-08-12 17:00 ` Bart Van Assche
2020-08-12 18:17 ` Tobias Klauser
2020-09-01 15:18 ` Leah Rumancik
2020-08-17 6:37 ` [RFC PATCH 0/4] block/bpf: add eBPF based block layer IO filtering Christoph Hellwig
2020-08-18 2:44 ` Ming Lei
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