Re: relatime: update once per day patches (was: ext3 IO latency measurements)

Andrew Morton
2009-03-26T15:57:35Z

On Thu, 26 Mar 2009 16:32:38 +0100 Frans Pop <elendil@planet.nl> wrote:

> Andrew Morton wrote:
> > On Thu, 26 Mar 2009 15:03:12 +0100 Ingo Molnar <mingo@elte.hu> wrote:
> >> Why arent the relatime patches upstream?
> >
> > They have been for ages.
>
> I assume Ingo means the patches to make relatime update atime at least
> once per day to ensure better compatibility with apps that do use or rely
> on access times.
> These patches are already being included by several distros and, FWIW,
> Debian would like to see them upstream as well because we feel .
>
> They were last submitted by Matthew Garrett:
> http://lkml.org/lkml/2008/11/27/234
> http://lkml.org/lkml/2008/11/27/235
>
> Loads of people seem to want this, but even though it's been submitted at
> least twice and discussed even more often, it never gets anywhere.
>

Hard-wiring a 24-hour interval into the core VFS for all mounted
filesystems is dumb.

I (and others) pointed out that it would be better to implement this as
a mount option. That suggestion was met with varying sillinesses and
that is where things stand.