Re: True fsync() in Linux (on IDE)

[Chris Mason]

On Thu, 2004-03-18 at 16:09, Peter Zaitsev wrote:
> On Thu, 2004-03-18 at 13:02, Chris Mason wrote:
> 
> > > In the former case cache is surely not flushed. 
> > > 
> > Hmmm, is it reiser?  For both 2.4 reiserfs and ext3, the flush happens
> > when you commit.  ext3 always commits on fsync and reiser only commits
> > when you've changed metadata.
> 
> Oh. Yes. This is Reiser, I did not think it is FS issue.
> I'll know to stay away from ReiserFS now.

For reiserfs data=ordered should be enough to trigger the needed
commits.  If not, data=journal.  Note that neither fs does barriers for
O_SYNC, so we're just not perfect in 2.4.

-chris


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