From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: rjw-KKrjLPT3xs0@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 4/7] cgroup_freezer: don't stall transition to FROZEN for PF_NOFREEZE or PF_FREEZER_SKIP tasks
Date: Wed, 24 Oct 2012 15:06:51 -0400 [thread overview]
Message-ID: <20121024190651.GC12182@atj.dyndns.org> (raw)
In-Reply-To: <20121023155533.GC16201-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Hello, Oleg.
On Tue, Oct 23, 2012 at 05:55:33PM +0200, Oleg Nesterov wrote:
> > Ooh, ouch, definitely. We should clear that. Can you please make a
> > patch?
>
> Sure... but what do you think is better?
>
> I'd prefer to simply clear PF_NOFREEZE (without set_freezable), but
> obviously this doesn't look exactly right from cgroup_freezer pov.
I don't think it matters all that much. It's a pretty special case.
Maybe define PF_CLEAR_ON_EXEC_MASK or something and just include
PF_NOFREEZE in it?
Thanks.
--
tejun
next prev parent reply other threads:[~2012-10-24 19:06 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1350426526-14254-1-git-send-email-tj@kernel.org>
[not found] ` <1350426526-14254-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-10-16 22:28 ` [PATCH 1/7] cgroup: cgroup_subsys->fork() should be called after the task is added to css_set Tejun Heo
[not found] ` <1350426526-14254-2-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-10-17 8:28 ` Li Zefan
[not found] ` <507E6C4B.6000704-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2012-10-18 1:25 ` Li Zefan
2012-10-21 19:11 ` Oleg Nesterov
[not found] ` <20121021191141.GA26218-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-21 19:22 ` Tejun Heo
[not found] ` <20121021192222.GB5951@atj.dyndns.org>
[not found] ` <20121021192222.GB5951-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-22 18:04 ` Oleg Nesterov
[not found] ` <20121022180445.GB21553-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-22 21:16 ` Tejun Heo
[not found] ` <20121022211631.GE5951-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-23 15:51 ` Oleg Nesterov
[not found] ` <20121023155128.GB16201-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-24 19:04 ` Tejun Heo
[not found] ` <20121024190458.GB12182-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-25 17:42 ` Oleg Nesterov
2012-12-20 5:25 ` Herton Ronaldo Krzesinski
2012-12-28 21:22 ` [PATCH] cgroup: remove unused dummy cgroup_fork_callbacks() Tejun Heo
2012-10-16 22:28 ` [PATCH 2/7] freezer: add missing mb's to freezer_count() and freezer_should_skip() Tejun Heo
[not found] ` <1350426526-14254-3-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-10-22 17:44 ` Oleg Nesterov
[not found] ` <20121022174404.GA21553-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-22 21:13 ` Tejun Heo
[not found] ` <20121022211317.GD5951-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-23 15:39 ` Oleg Nesterov
[not found] ` <20121023153919.GA16201-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-24 18:57 ` Tejun Heo
[not found] ` <20121024185710.GA12182@atj.dyndns.org>
[not found] ` <20121024185710.GA12182-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-25 16:39 ` [PATCH 0/1] (Was: freezer: add missing mb's to freezer_count() and freezer_should_skip()) Oleg Nesterov
[not found] ` <20121025163941.GA3801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-25 16:39 ` [PATCH 1/1] freezer: change ptrace_stop/do_signal_stop to use freezable_schedule() Oleg Nesterov
[not found] ` <20121025163959.GB3801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-25 17:18 ` Tejun Heo
[not found] ` <20121025171812.GE11442@htj.dyndns.org>
[not found] ` <20121025171812.GE11442-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2012-10-25 17:34 ` Oleg Nesterov
[not found] ` <20121025173433.GA7650@redhat.com>
[not found] ` <20121025173433.GA7650-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-25 17:36 ` Tejun Heo
[not found] ` <20121025173632.GI11442-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2012-10-26 17:45 ` [PATCH v2 0/1] " Oleg Nesterov
[not found] ` <20121026174545.GA21639-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-26 17:46 ` [PATCH v2 1/1] " Oleg Nesterov
[not found] ` <20121026174606.GB21639-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-26 17:52 ` Tejun Heo
[not found] ` <20121026175258.GV11442-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2012-10-26 18:01 ` Oleg Nesterov
[not found] ` <20121026180149.GA22421@redhat.com>
[not found] ` <20121026180149.GA22421-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-26 21:14 ` Rafael J. Wysocki
[not found] ` <2566006.UzAQbpOjNQ@vostro.rjw.lan>
[not found] ` <2566006.UzAQbpOjNQ-sKB8Sp2ER+y1GS7QM15AGw@public.gmane.org>
2012-10-26 21:29 ` Rafael J. Wysocki
[not found] ` <2718983.vORnrfWdbE-sKB8Sp2ER+y1GS7QM15AGw@public.gmane.org>
2012-10-26 21:29 ` Tejun Heo
[not found] ` <20121026212909.GW11442@htj.dyndns.org>
[not found] ` <20121026212909.GW11442-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2012-10-28 0:16 ` Rafael J. Wysocki
2012-10-27 22:22 ` Ben Hutchings
[not found] ` <1351376558.21585.1.camel@deadeye.wl.decadent.org.uk>
[not found] ` <1351376558.21585.1.camel-nDn/Rdv9kqW9Jme8/bJn5UCKIB8iOfG2tUK59QYPAWc@public.gmane.org>
2012-10-28 13:45 ` Oleg Nesterov
2012-10-16 22:28 ` [PATCH 3/7] cgroup_freezer: make it official that writes to freezer.state don't fail Tejun Heo
2012-10-16 22:28 ` [PATCH 4/7] cgroup_freezer: don't stall transition to FROZEN for PF_NOFREEZE or PF_FREEZER_SKIP tasks Tejun Heo
[not found] ` <1350426526-14254-5-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-10-22 18:34 ` Oleg Nesterov
[not found] ` <20121022183453.GA24687@redhat.com>
[not found] ` <20121022183453.GA24687-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-22 21:18 ` Tejun Heo
[not found] ` <20121022211822.GF5951-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-23 15:55 ` Oleg Nesterov
[not found] ` <20121023155533.GC16201@redhat.com>
[not found] ` <20121023155533.GC16201-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-24 19:06 ` Tejun Heo [this message]
[not found] ` <20121024190651.GC12182-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-25 17:12 ` [PATCH 0/1] (Was: cgroup_freezer: don't stall transition to FROZEN for PF_NOFREEZE or PF_FREEZER_SKIP tasks) Oleg Nesterov
[not found] ` <20121025171236.GA6776-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-25 17:12 ` [PATCH 1/1] freezer: exec should clear PF_NOFREEZE along with PF_KTHREAD Oleg Nesterov
[not found] ` <20121025171256.GB6776-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-25 17:20 ` Tejun Heo
[not found] ` <20121025172016.GF11442@htj.dyndns.org>
[not found] ` <20121025172016.GF11442-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2012-10-25 17:37 ` Oleg Nesterov
[not found] ` <20121025173756.GB7650-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-25 17:37 ` Tejun Heo
[not found] ` <CAOS58YPAVVr=itauGD9eTpfRLSBLuM8Bpyuq9AP73MDr8dPmiQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-25 20:13 ` Rafael J. Wysocki
2012-10-16 22:28 ` [PATCH 5/7] cgroup_freezer: allow moving tasks in and out of a frozen cgroup Tejun Heo
2012-10-16 22:28 ` [PATCH 6/7] cgroup_freezer: prepare update_if_frozen() for locking change Tejun Heo
2012-10-16 22:28 ` [PATCH 7/7] cgroup_freezer: don't use cgroup_lock_live_group() Tejun Heo
2012-10-17 19:16 ` [PATCHSET cgroup/for-3.8] cgroup_freezer: allow migration regardless of freezer state and update locking Matt Helsley
[not found] ` <20121017191606.GA6223-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2012-10-18 21:14 ` Tejun Heo
[not found] ` <20121018211434.GI13370@google.com>
[not found] ` <20121018211434.GI13370-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-10-18 22:21 ` Matt Helsley
[not found] ` <20121018222155.GB6223-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2012-10-18 22:35 ` Tejun Heo
[not found] ` <20121018223517.GQ13370-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-10-18 23:47 ` Matt Helsley
[not found] ` <20121018234726.GC6223-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2012-10-19 0:01 ` Tejun Heo
[not found] ` <20121019000153.GZ13370@google.com>
[not found] ` <20121019000153.GZ13370-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-10-19 1:29 ` Matt Helsley
[not found] ` <20121019012945.GD6223@us.ibm.com>
[not found] ` <20121019012945.GD6223-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2012-10-19 20:02 ` Tejun Heo
2012-10-19 16:54 ` Rafael J. Wysocki
[not found] ` <2424755.Pg0O5tTD3k@vostro.rjw.lan>
[not found] ` <2424755.Pg0O5tTD3k-sKB8Sp2ER+y1GS7QM15AGw@public.gmane.org>
2012-10-19 20:04 ` Tejun Heo
[not found] ` <20121019200421.GO13370@google.com>
[not found] ` <20121019200421.GO13370-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-10-21 19:18 ` Oleg Nesterov
[not found] ` <20121021191853.GB26218-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-21 19:24 ` Tejun Heo
[not found] ` <1350426526-14254-6-git-send-email-tj@kernel.org>
[not found] ` <1350426526-14254-6-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-10-22 19:25 ` [PATCH 5/7] cgroup_freezer: allow moving tasks in and out of a frozen cgroup Oleg Nesterov
[not found] ` <20121022192506.GA27163@redhat.com>
[not found] ` <20121022192506.GA27163-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-22 21:25 ` Tejun Heo
[not found] ` <20121022212505.GG5951@atj.dyndns.org>
[not found] ` <20121022212505.GG5951-OlzNCW9NnSVy/B6EtB590w@public.gmane.org>
2012-10-23 16:14 ` Oleg Nesterov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20121024190651.GC12182@atj.dyndns.org \
--to=tj-dgejt+ai2ygdnm+yrofe0a@public.gmane.org \
--cc=cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=rjw-KKrjLPT3xs0@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox