linux-kernel - Re: [PATCH v3 bpf-next 0/4] Introduce bpf_cgroup_read

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Message-ID: <20250623-rebel-verlust-8fcd4cdd9122@brauner>
Date: Mon, 23 Jun 2025 13:03:22 +0200
From: Christian Brauner <brauner@...nel.org>
To: Song Liu <song@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>,
	kernel-team@...a.com,
	andrii@...nel.org,
	eddyz87@...il.com,
	ast@...nel.org,
	daniel@...earbox.net,
	martin.lau@...ux.dev,
	viro@...iv.linux.org.uk,
	jack@...e.cz,
	kpsingh@...nel.org,
	mattbobrowski@...gle.com,
	amir73il@...il.com,
	gregkh@...uxfoundation.org,
	tj@...nel.org,
	daan.j.demeyer@...il.com,
	bpf@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH v3 bpf-next 0/4] Introduce bpf_cgroup_read_xattr

On Sun, 22 Jun 2025 23:38:50 -0700, Song Liu wrote:
> Introduce a new kfunc bpf_cgroup_read_xattr, which can read xattr from
> cgroupfs nodes. The primary users are LSMs, cgroup programs, and sched_ext.
> 

Applied to the vfs-6.17.bpf branch of the vfs/vfs.git tree.
Patches in the vfs-6.17.bpf branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs-6.17.bpf

[1/4] kernfs: remove iattr_mutex
      https://git.kernel.org/vfs/vfs/c/d1f4e9026007
[2/4] bpf: Introduce bpf_cgroup_read_xattr to read xattr of cgroup's node
      https://git.kernel.org/vfs/vfs/c/535b070f4a80
[3/4] bpf: Mark cgroup_subsys_state->cgroup RCU safe
      https://git.kernel.org/vfs/vfs/c/1504d8c7c702
[4/4] selftests/bpf: Add tests for bpf_cgroup_read_xattr
      https://git.kernel.org/vfs/vfs/c/f4fba2d6d282