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| author | Yosry Ahmed <yosryahmed@google.com> | 2022-08-05 14:48:15 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-08-09 09:11:41 -0700 |
| commit | f3a2aebdd6fb90e444d595e46de64e822af419da (patch) | |
| tree | 6782153a9c2894e19d89e2bab7dd4326976342f6 /kernel | |
| parent | fa96b24204af42274ec13dfb2f2e6990d7510e55 (diff) | |
| download | lwn-f3a2aebdd6fb90e444d595e46de64e822af419da.tar.gz lwn-f3a2aebdd6fb90e444d595e46de64e822af419da.zip | |
cgroup: enable cgroup_get_from_file() on cgroup1
cgroup_get_from_file() currently fails with -EBADF if called on cgroup
v1. However, the current implementation works on cgroup v1 as well, so
the restriction is unnecessary.
This enabled cgroup_get_from_fd() to work on cgroup v1, which would be
the only thing stopping bpf cgroup_iter from supporting cgroup v1.
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Hao Luo <haoluo@google.com>
Link: https://lore.kernel.org/r/20220805214821.1058337-3-haoluo@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index ffaccd6373f1..5f4502aa2b3b 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -6132,11 +6132,6 @@ static struct cgroup *cgroup_get_from_file(struct file *f) return ERR_CAST(css); cgrp = css->cgroup; - if (!cgroup_on_dfl(cgrp)) { - cgroup_put(cgrp); - return ERR_PTR(-EBADF); - } - return cgrp; } |