From: Hannes Reinecke <hare@suse.de>
To: "Luis R. Rodriguez" <mcgrof@kernel.org>,
viro@zeniv.linux.org.uk, bart.vanassche@wdc.com,
ming.lei@redhat.com, tytso@mit.edu, darrick.wong@oracle.com,
jikos@kernel.org, rjw@rjwysocki.net, pavel@ucw.cz,
len.brown@intel.com, linux-fsdevel@vger.kernel.org
Cc: boris.ostrovsky@oracle.com, jgross@suse.com,
todd.e.brandt@linux.intel.com, nborisov@suse.com, jack@suse.cz,
martin.petersen@oracle.com, ONeukum@suse.com,
oleksandr@natalenko.name, oleg.b.antonyan@gmail.com,
linux-pm@vger.kernel.org, linux-block@vger.kernel.org,
linux-xfs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC 5/5] pm: remove kernel thread freezing
Date: Wed, 4 Oct 2017 08:07:19 +0200 [thread overview]
Message-ID: <3eb4e33b-6e6b-e71b-c3db-49f98591f9c6@suse.de> (raw)
In-Reply-To: <20171003185313.1017-6-mcgrof@kernel.org>
On 10/03/2017 08:53 PM, Luis R. Rodriguez wrote:
> Now that all filesystems which used to rely on kthread
> freezing have been converted to filesystem freeze/thawing
> we can remove the kernel kthread freezer.
>
> Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
> ---
> Documentation/power/freezing-of-tasks.txt | 9 ------
> drivers/xen/manage.c | 6 ----
> include/linux/freezer.h | 4 ---
> kernel/power/hibernate.c | 10 ++-----
> kernel/power/power.h | 20 +------------
> kernel/power/process.c | 47 -------------------------------
> kernel/power/user.c | 9 ------
> tools/power/pm-graph/analyze_suspend.py | 1 -
> 8 files changed, 3 insertions(+), 103 deletions(-)
>
Weelll ... have you checked MD?
It's using kernel threads, which probably should be stopped, too, when
going into suspend. After all, MD might be doing on of it's internal
operations (eg resync) at that time, which will generate quite some I/O.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
next prev parent reply other threads:[~2017-10-04 6:07 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-03 18:53 [RFC 0/5] fs: replace kthread freezing with filesystem freeze/thaw Luis R. Rodriguez
2017-10-03 18:53 ` [RFC 1/5] fs: add iterate_supers_reverse() Luis R. Rodriguez
2017-10-03 18:53 ` [RFC 2/5] fs: freeze on suspend and thaw on resume Luis R. Rodriguez
2017-10-03 20:02 ` Bart Van Assche
2017-10-03 20:23 ` Luis R. Rodriguez
2017-10-03 20:32 ` Bart Van Assche
2017-10-03 20:39 ` Luis R. Rodriguez
2017-10-03 20:06 ` Jiri Kosina
2017-10-03 20:58 ` Dave Chinner
2017-10-03 21:16 ` Luis R. Rodriguez
2017-10-03 18:53 ` [RFC 3/5] xfs: allow fs freeze on suspend/hibernation Luis R. Rodriguez
2017-10-03 18:53 ` [RFC 4/5] ext4: add fs freezing support " Luis R. Rodriguez
2017-10-03 19:59 ` Theodore Ts'o
2017-10-03 20:13 ` Luis R. Rodriguez
2017-10-04 1:42 ` Theodore Ts'o
2017-10-04 7:05 ` Dave Chinner
2017-10-04 15:25 ` Bart Van Assche
2017-10-04 16:48 ` Theodore Ts'o
2017-10-04 22:22 ` Dave Chinner
2017-10-03 18:53 ` [RFC 5/5] pm: remove kernel thread freezing Luis R. Rodriguez
2017-10-03 18:59 ` Rafael J. Wysocki
2017-10-03 21:15 ` Rafael J. Wysocki
2017-10-04 0:47 ` Luis R. Rodriguez
2017-10-04 1:03 ` Bart Van Assche
2017-11-29 23:05 ` Luis R. Rodriguez
2017-10-04 7:18 ` Dave Chinner
2017-10-03 20:12 ` Pavel Machek
2017-10-03 20:15 ` Jiri Kosina
2017-10-03 20:21 ` Pavel Machek
2017-10-03 20:38 ` Jiri Kosina
2017-10-03 20:41 ` Rafael J. Wysocki
2017-10-03 20:57 ` Pavel Machek
2017-10-03 21:00 ` Jiri Kosina
2017-10-03 21:09 ` Shuah Khan
2017-10-03 21:18 ` Luis R. Rodriguez
2017-10-03 20:49 ` Luis R. Rodriguez
2017-10-06 12:07 ` Pavel Machek
2017-10-06 12:54 ` Theodore Ts'o
2017-10-03 20:13 ` Bart Van Assche
2017-10-03 20:17 ` Jiri Kosina
2017-10-03 20:21 ` Bart Van Assche
2017-10-03 20:24 ` Jiri Kosina
2017-10-03 20:27 ` Luis R. Rodriguez
2017-10-03 20:51 ` Jiri Kosina
2017-10-03 21:04 ` Dave Chinner
2017-10-03 21:07 ` Luis R. Rodriguez
2017-10-04 6:07 ` Hannes Reinecke [this message]
2017-10-03 19:33 ` [RFC 0/5] fs: replace kthread freezing with filesystem freeze/thaw Ming Lei
2017-10-03 20:05 ` Luis R. Rodriguez
2017-10-03 20:47 ` Matthew Wilcox
2017-10-03 20:54 ` Luis R. Rodriguez
2017-10-03 20:59 ` Bart Van Assche
2017-10-04 15:43 ` Ming Lei
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