On Fri, Mar 10, 2006 at 09:43:57AM +0100, Arjan van de Ven wrote:
> On Fri, 2006-03-10 at 00:23 -0800, Andrew Morton wrote:
> > Arjan van de Ven <[email protected]> wrote:
> > >
> > >
> > > > I'm not sure that PageMappedToDisk() gets set in all the right places
> > > > though - it's mainly for the `nobh' handling and block_prepare_write()
> > > > would need to be taught to set it. I guess that'd be a net win, even if
> > > > only ext3 uses it..
> > >
> > > btw is nobh mature enough yet to become the default, or to just go away
> > > entirely as option ?
> >
> > I don't know how much usage it's had, sorry. It's only allowed in
> > data=writeback mode and not many people seem to use even that.
>
> would you be prepared to turn it on by default in -mm for a bit to see
> how it holds up? The concept seems valuable in itself, so much so that I
> feel this should be 1) on always by default when possible and 2) isn't
> really the kind of thing that should be a long term option; not having
> it almost is a -o pleaseAddThisBug option for each bug fixed.
It'd be good to get that hammered on, as it doesn't see hardly any testing
based upon the experiments I did sometime last year. It left me with
an unmountable root filesystem :-/
Dave
--
http://www.codemonkey.org.uk
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