From: Matthew Garrett <mjg@redhat.com>
To: Matthew Wilcox <matthew@wil.cx>
Cc: Jamie Lokier <jamie@shareable.org>,
Christoph Hellwig <hch@infradead.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Randy Dunlap <randy.dunlap@oracle.com>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
mingo@redhat.com, val.henson@gmail.com
Subject: Re: [PATCH v4] relatime: Make relatime smarter
Date: Fri, 28 Nov 2008 13:47:12 +0000 [thread overview]
Message-ID: <20081128134712.GC5058@srcf.ucam.org> (raw)
In-Reply-To: <20081128134055.GQ25548@parisc-linux.org>
On Fri, Nov 28, 2008 at 06:40:55AM -0700, Matthew Wilcox wrote:
> On Fri, Nov 28, 2008 at 11:18:09AM +0000, Jamie Lokier wrote:
> > Matthew Garrett wrote:
> > > The time between atime updates can be configured at boot
> > > with the relatime_interval kernel argument, or at runtime through a sysctl.
> >
> > Shouldn't it be a per-mount value, with defaults coming from the sysctl?
>
> Perhaps a more sensible question would be "Why make it configurable at
> all?" What's wrong with hardcoding 24 hours? Or, to put it another
> way, who wants to change it from 24 hours, and why?
There's approximately no cost to it, and arguably use cases that would
benefit. I don't think they'd be common enough to benefit from the
additional complexity of making it per-mount.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2008-11-28 13:47 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-26 19:54 [PATCH 1/2] relatime: Make atime updates more useful Matthew Garrett
2008-11-26 19:58 ` [PATCH 2/2] relatime: Allow making relatime the default behaviour Matthew Garrett
2008-11-26 21:11 ` Matthew Wilcox
2008-11-26 22:39 ` Randy Dunlap
2008-11-27 15:01 ` [PATCH v2 1/2] relatime: Make relatime behaviour smarter Matthew Garrett
2008-11-27 15:03 ` [PATCH v2 2/2] relatime: Allow making relatime the default behaviour Matthew Garrett
2008-11-27 15:07 ` Ingo Molnar
2008-11-27 16:03 ` Karel Zak
[not found] ` <20081127160353.GQ2961-sHeGUpI7y9L/9pzu0YdTqQ@public.gmane.org>
2008-11-27 17:30 ` Pádraig Brady
[not found] ` <492ED945.5010600-V8g9lnOeT5ydJdNcDFJN0w@public.gmane.org>
2008-11-27 17:39 ` Matthew Garrett
2008-11-27 16:35 ` Alan Cox
2008-11-27 16:47 ` Matthew Garrett
2008-11-27 16:59 ` [PATCH v3] relatime: Make relatime smarter Matthew Garrett
2008-11-27 17:06 ` Christoph Hellwig
2008-11-27 17:58 ` [PATCH v4] " Matthew Garrett
2008-11-27 22:08 ` Andreas Dilger
2008-11-27 22:35 ` Matthew Wilcox
2008-11-28 11:13 ` Jamie Lokier
2008-11-28 13:41 ` Matthew Garrett
2008-11-28 11:18 ` Jamie Lokier
2008-11-28 13:40 ` Matthew Wilcox
2008-11-28 13:47 ` Matthew Garrett [this message]
2008-12-02 11:10 ` Karel Zak
2008-12-02 16:46 ` Matthew Wilcox
2008-11-27 19:15 ` [PATCH v3] " Alan Cox
2008-11-28 11:16 ` Jamie Lokier
2008-11-28 13:45 ` Matthew Garrett
2008-11-27 17:03 ` [PATCH v2 2/2] relatime: Allow making relatime the default behaviour Christoph Hellwig
2008-11-29 8:24 ` Andrew Morton
2008-11-29 13:03 ` Matthew Wilcox
2008-11-29 13:57 ` Jörn Engel
2008-11-29 18:56 ` Jamie Lokier
2008-11-29 19:02 ` Matthew Garrett
2008-11-29 20:32 ` Andrew Morton
2008-11-29 20:38 ` Matthew Wilcox
2008-11-29 20:56 ` Andrew Morton
2008-11-29 21:41 ` Ingo Molnar
2008-11-29 20:55 ` Arjan van de Ven
2008-11-29 21:03 ` Matthew Garrett
2008-11-29 21:02 ` Matthew Garrett
2008-11-27 15:06 ` [PATCH v2 1/2] relatime: Make relatime behaviour smarter Ingo Molnar
2008-11-29 8:29 ` [PATCH 1/2] relatime: Make atime updates more useful Andrew Morton
2008-12-02 17:19 ` [PATCH] relatime: Let relatime update atime at least once per day Matthew Garrett
2008-12-13 5:26 ` Valerie Aurora Henson
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