Re: [RFC] ext4: Don't send extra barrier during fsync if there are no dirty pages.

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On Mon, Aug 02, 2010 at 05:09:39PM -0700, Darrick J. Wong wrote:
> Well... on my fsync-happy workloads, this seems to cut the barrier count down
> by about 20%, and speeds it up by about 20%.

Care to share the test case for this?  I'd be especially interesting on
how it behaves with non-draining barriers / cache flushes in fsync.

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