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Message-ID: <20200806145901.GE4520@mtj.thefacebook.com> References: <1596507196-27417-1-git-send-email-muneendra.kumar@broadcom.com> <1596507196-27417-17-git-send-email-muneendra.kumar@broadcom.com> <61d2fd75-84ea-798b-aee9-b07957ac8f1b@suse.de> <08b9825b-6abb-c077-ac0d-bd63f10f2ac2@broadcom.com> <20200806144135.GC4520@mtj.thefacebook.com> <96930d0f-cb4d-94f4-9cbb-c82d2f0c3840@redhat.com> <20200806144804.GD4520@mtj.thefacebook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hello, Paolo. On Thu, Aug 06, 2020 at 04:54:21PM +0200, Paolo Bonzini wrote: > If I understand correctly, your only objection is that you'd rather not > have it specified with a file under /sys/kernel/cgroup, and instead you > would prefer to have it implemented as a ioctl for a magic file > somewhere else in sysfs? I don't think there is any precedent for this, > and I'm not even sure where that sysfs file would be. It just doesn't fit in the cgroupfs. I don't know where it should go for this specific case. That's for you guys to figure out. There are multiple precedences - e.g. how perf or bpf hooks into cgroup and others that I can't remember off the top of my head. Thanks. -- tejun