Re: [PATCH v2 2/2] bpf: cgroup_iter: support cgroup1 using cgroup fd

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On 10/10/22 5:33 PM, Yosry Ahmed wrote:
Use cgroup_v1v2_get_from_fd() in cgroup_iter to support attaching to
both cgroup v1 and v2 using fds.

Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
---
  kernel/bpf/cgroup_iter.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/cgroup_iter.c b/kernel/bpf/cgroup_iter.c
index 0d200a993489..9fcf09f2ef00 100644
--- a/kernel/bpf/cgroup_iter.c
+++ b/kernel/bpf/cgroup_iter.c
@@ -196,7 +196,7 @@ static int bpf_iter_attach_cgroup(struct bpf_prog *prog,
  		return -EINVAL;
if (fd)
-		cgrp = cgroup_get_from_fd(fd);
+		cgrp = cgroup_v1v2_get_from_fd(fd);

Acked-by: Martin KaFai Lau <martin.lau@xxxxxxxxxx>

Tejun, patch 1 should depend on a recent revert that is not in the bpf tree yet. Do you want to take this set to the cgroup tree?

  	else if (id)
  		cgrp = cgroup_get_from_id(id);
  	else /* walk the entire hierarchy by default. */




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