linux-kernel - Re: [PATCH] cgroup: deprecate remount option changes mount option

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 15 Mar 2012 20:36:35 +0100
From:	Lennart Poettering <mzxreary@...inter.de>
To:	Tejun Heo <tj@...nel.org>
Cc:	Li Zefan <lizf@...fujitsu.com>,
	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH] cgroup: deprecate remount option changes mount option

On Thu, 15.03.12 09:56, Tejun Heo (tj@...nel.org) wrote:

> This patch marks the following features for deprecation.
> 
> * Rebinding subsys by remount: Never reached useful state - only works
>   on empty hierarchies.
> 
> * release_agent update by remount: release_agent itself will be
>   replaced with conventional fsnotify notification.

Just wondering, what kind of event do you plan to emit if a cgroup runs
empty? To userspace, with fanotify, will this be FAN_MODIFY? I'd very
much prefer if we only get events really when a group runs empty, and
not each time a PID is added/removed from a cgroup, which FAN_NOTIFY
might suggest?

Lennart

-- 
Lennart Poettering - Red Hat, Inc.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/