All of lore.kernel.org
 help / color / mirror / Atom feed
From: david@lang.hm
To: Theodore Tso <tytso@MIT.EDU>
Cc: "D. Jansen" <d.g.jansen@googlemail.com>,
	Oliver Neukum <oneukum@suse.de>,
	akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	Dave Chinner <david@fromorbit.com>,
	njs@pobox.com, bart@samwel.tk
Subject: Re: [rfc] Ignore Fsync Calls in Laptop_Mode
Date: Fri, 27 May 2011 10:51:08 -0700 (PDT)	[thread overview]
Message-ID: <alpine.DEB.2.02.1105271050160.30828@asgard.lang.hm> (raw)
In-Reply-To: <AC254312-8FFF-4070-BF8B-D9B1E8FF1AE6@mit.edu>

On Fri, 27 May 2011, Theodore Tso wrote:

> If you are willing to rewrite the *entire* database to a completely new file each
> time you want to write out some data, and only delete the old database
> once the new database has been written out, then you're fine.   If the file is too
> big you can delay the time period between a complete writeout of the
> database.  But then if you drop your laptop and the battery slips out, you'll
> lose more data.  Life is full of tradeoffs.

actually, even in this case don't you need a barrier or fsync to make sure 
the new file is completely written before the old file goes away?

David Lang

  reply	other threads:[~2011-05-27 17:52 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-19 13:34 [rfc] Ignore Fsync Calls in Laptop_Mode Dennis Jansen
2011-05-19 13:43 ` Alan Cox
     [not found]   ` <BANLkTikFRwPY_qOQpPmCmNUJbBUsGcuGUw@mail.gmail.com>
     [not found]     ` <20110519153928.40521b93@lxorguk.ukuu.org.uk>
2011-05-19 15:01       ` D. Jansen
2011-05-19 15:02   ` D. Jansen
2011-05-20 15:34     ` Valdis.Kletnieks
2011-05-20  3:39 ` Dave Chinner
2011-05-20  6:01   ` D. Jansen
2011-05-22  0:48     ` Dave Chinner
2011-05-23  8:12       ` Oliver Neukum
2011-05-23 13:05         ` D. Jansen
2011-05-25  0:00         ` Dave Chinner
2011-05-25  6:50           ` Oliver Neukum
2011-05-26  7:01             ` D. Jansen
2011-05-26 10:49               ` Theodore Tso
     [not found]                 ` <BANLkTimNjt4=9v33Z9Nr12xa6GmyJ-Ue5A@mail.gmail.com>
2011-05-26 13:31                   ` Ted Ts'o
2011-05-26 16:05                     ` D. Jansen
2011-05-26 16:21                       ` Ted Ts'o
2011-05-27  7:12                         ` D. Jansen
2011-05-27 14:17                           ` Theodore Tso
2011-05-27 17:51                             ` david [this message]
2011-05-29 10:45                             ` D. Jansen
2011-05-30  1:53                               ` david
2011-05-30  7:13                                 ` Oliver Neukum
2011-05-30 12:55                                   ` Valdis.Kletnieks
2011-05-30 18:03                                     ` david
2011-05-30 13:55                                 ` D. Jansen
2011-05-30 18:02                                   ` david
2011-05-30 18:28                                     ` D. Jansen
2011-05-30 18:43                                       ` Valdis.Kletnieks
2011-05-30 19:54                                         ` D. Jansen
2011-05-30 18:45                                       ` david
2011-05-30 19:49                                         ` D. Jansen
2011-05-30 20:53                                           ` david
2011-05-30 21:24                                             ` D. Jansen
2011-05-30 22:41                                               ` david
2011-05-31  2:03                                               ` Ted Ts'o
2011-05-31  2:26                                                 ` david
2011-05-31 13:47                                                 ` D. Jansen
2011-05-31 18:23                                                   ` david
2011-05-31 18:37                                                     ` D. Jansen
2011-05-31 18:54                                                       ` david
2011-05-31 19:04                                                         ` D. Jansen
2011-06-02  7:42                                                 ` D. Jansen
2011-05-31  8:22                                               ` Valdis.Kletnieks
2011-05-30 22:10                                           ` Jesper Juhl
2011-05-31  6:48                                         ` Oliver Neukum
2011-05-26 19:31               ` Matthew Garrett
2011-05-27  7:22                 ` D. Jansen
2011-05-20 15:28 ` Valdis.Kletnieks
2011-05-20 16:40   ` D. Jansen
2011-05-20 22:03     ` torbenh
2011-05-21  8:23       ` D. Jansen
2011-05-23  8:22     ` Jesper Juhl

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=alpine.DEB.2.02.1105271050160.30828@asgard.lang.hm \
    --to=david@lang.hm \
    --cc=akpm@linux-foundation.org \
    --cc=bart@samwel.tk \
    --cc=d.g.jansen@googlemail.com \
    --cc=david@fromorbit.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=njs@pobox.com \
    --cc=oneukum@suse.de \
    --cc=tytso@MIT.EDU \
    /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.