All of lore.kernel.org
 help / color / mirror / Atom feed
From: Nigel Cunningham <ncunningham@crca.org.au>
To: Pavel Machek <pavel@ucw.cz>
Cc: linux-pm@lists.linux-foundation.org, "Leisner,
	Martin" <Martin.Leisner@xerox.com>
Subject: Re: syncing the disks when entering sleep
Date: Wed, 27 Jan 2010 18:29:24 +1100	[thread overview]
Message-ID: <4B5FEB54.7030703@crca.org.au> (raw)
In-Reply-To: <20100127064534.GA16672@ucw.cz>

Hi.

Pavel Machek wrote:
> On Wed 2010-01-27 01:51:03, Rafael J. Wysocki wrote:
>> On Tuesday 26 January 2010, Pavel Machek wrote:
>>>>>>> The ideal behavior would be:
>>>>>>>
>>>>>>>     if(disk is spun up)
>>>>>>>         then let the sync happen
>>>>>> I'm not against that.  Patch welcome. :-)
>>>>> I'd say such knob would be ugly.
>>>> Define "ugly", please.
>>> Per-system property, which should better be
>>> per-program-that-requires-suspend. You request suspend without syncing
>>> (you want it quick, battery is 90%), then the battery runs low, and
>>> system daeomn requests s2ram, not realizing that someone disabled sync
>>> from under him.
>> I really prefer a per-system setting.  The program that wants to sync anyway
>> can easily do that by itself.
> 
> Well, existing programs expect existing behaviour... Programs that do
> not want to sync can easily do it themselves, too, without afecting
> rest of system. 

What's all this talk about 'programs'? The direct invokers of the
hibernation and suspend-to-ram code are few in number. They're easily
modified to match changes in the kernel code, and when it comes to
syncing, there's no need for the modification to be made in lock-step.
If you hibernate or suspend without having dirty pages synced to disk
first, it shouldn't matter, should it? Resuming is pretty reliable, and
even if it fails, journal recovery is not problematic.

Regards,

Nigel

  reply	other threads:[~2010-01-27  7:29 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-22 15:59 syncing the disks when entering sleep Leisner, Martin
2010-01-22 20:49 ` Rafael J. Wysocki
2010-01-22 21:31   ` Nigel Cunningham
2010-01-22 21:33     ` Leisner, Martin
2010-01-22 21:38       ` Rafael J. Wysocki
2010-01-22 21:40         ` Leisner, Martin
2010-01-22 21:55           ` Nigel Cunningham
2010-01-22 22:06             ` Nigel Cunningham
2010-01-22 21:35     ` Rafael J. Wysocki
2010-01-26 13:59   ` Pavel Machek
2010-01-26 18:17     ` Rafael J. Wysocki
2010-01-26 14:51       ` Pavel Machek
2010-01-27  0:51         ` Rafael J. Wysocki
2010-01-27  6:45           ` Pavel Machek
2010-01-27  7:29             ` Nigel Cunningham [this message]
2010-01-27 20:50             ` Rafael J. Wysocki
2010-01-28  7:26               ` Pavel Machek
2010-01-28 10:43                 ` Rafael J. Wysocki
2010-04-05  6:38                   ` document open(/dev/snapshot) sideeffects -- was Re: [linux-pm] " Pavel Machek
2010-04-23 18:28                     ` Rafael J. Wysocki
2010-04-24  5:42                       ` Pavel Machek
2010-04-24  5:42                       ` document open(/dev/snapshot) sideeffects -- was " Pavel Machek
2010-04-23 18:28                     ` Rafael J. Wysocki
2010-04-05  6:38                   ` Pavel Machek
2010-01-27  9:55           ` Pavel Machek
2010-01-27 20:46             ` Rafael J. Wysocki
2010-01-31  8:52               ` Pavel Machek
2010-01-31 12:33                 ` Rafael J. Wysocki
2010-02-01 10:49                   ` Pavel Machek
2010-02-01 17:13                     ` Leisner, Martin
2010-02-01 21:09                       ` Pavel Machek
2010-02-02  4:13                         ` Nigel Cunningham
2010-02-10  8:13                           ` Pavel Machek
2010-02-10 10:34                             ` Rafael J. Wysocki
2010-02-10 10:38                               ` Oliver Neukum
2010-02-10 10:58                                 ` Rafael J. Wysocki
2010-02-10 11:02                                   ` Oliver Neukum
2010-02-10 18:42                                     ` Rafael J. Wysocki
2010-02-15 20:28                                       ` Matthew Garrett
2010-02-16  6:38                                       ` Pavel Machek
2010-02-10 13:31                               ` Pavel Machek
2010-02-10 19:19                                 ` Rafael J. Wysocki
2010-02-10 21:17                                   ` Leisner, Martin
2010-02-11 14:49                                     ` Pavel Machek
2010-02-11 15:00                                   ` Pavel Machek
2010-02-11 17:28                                     ` Rafael J. Wysocki
2010-02-11 20:17                                       ` Nigel Cunningham
2010-02-10 20:58                               ` Leisner, Martin
2010-02-01 20:55                     ` Nigel Cunningham
2010-02-01 21:07                       ` Pavel Machek
2010-02-01 22:03                         ` Nigel Cunningham

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=4B5FEB54.7030703@crca.org.au \
    --to=ncunningham@crca.org.au \
    --cc=Martin.Leisner@xerox.com \
    --cc=linux-pm@lists.linux-foundation.org \
    --cc=pavel@ucw.cz \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.