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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Y Song <ys114321@gmail.com>
Cc: Alban Crequy <alban.crequy@gmail.com>,
netdev <netdev@vger.kernel.org>,
linux-kernel@vger.kernel.org,
containers@lists.linux-foundation.org, cgroups@vger.kernel.org,
Alban Crequy <alban@kinvolk.io>,
tj@kernel.org
Subject: Re: [PATCH] [RFC] bpf: tracing: new helper bpf_get_current_cgroup_ino
Date: Tue, 22 May 2018 20:35:51 -0700 [thread overview]
Message-ID: <20180523033550.z3tqo4lhd3zrmtdu@ast-mbp> (raw)
In-Reply-To: <CAH3MdRVdfw52atavT3KL8MpPw7zDM_hR6aUcqDP1PogLn_sH+w@mail.gmail.com>
On Tue, May 22, 2018 at 08:33:24PM -0700, Y Song wrote:
> + struct cgroup *cgrp = task_dfl_cgroup(current);
> + if (!cgrp)
> + return -EINVAL;
why this check is needed?
next prev parent reply other threads:[~2018-05-23 3:35 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-13 17:33 [PATCH] [RFC] bpf: tracing: new helper bpf_get_current_cgroup_ino Alban Crequy
2018-05-14 19:38 ` Y Song
2018-05-21 13:52 ` Alban Crequy
2018-05-21 16:26 ` Alexei Starovoitov
2018-05-22 0:24 ` Y Song
2018-05-23 3:33 ` Y Song
2018-05-23 3:35 ` Alexei Starovoitov [this message]
2018-05-23 4:31 ` Y Song
2018-05-23 8:57 ` Daniel Borkmann
2018-05-25 15:21 ` Alban Crequy
2018-05-25 16:28 ` Y Song
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