Messages in this thread | | | Subject | Re: [RFC PATCH] ext3 writepage() journal avoidance | From | Arjan van de Ven <> | Date | Fri, 10 Mar 2006 09:43:57 +0100 |
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On Fri, 2006-03-10 at 00:23 -0800, Andrew Morton wrote: > Arjan van de Ven <arjan@infradead.org> 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.
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