Re: [review] Remove the xfs refcache

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Mon, Dec 17, 2007 at 03:00:04PM +1100, Lachlan McIlroy wrote:
> Hey hold on there buddy!  We may need to reactivate this code to fix some
> performance issues.  I've acttually got this code working and proven that
> it is one way to fix some of the NAS/NFS issues we have.
>
> The little comment that reads "reference cache not needed for NFS in 2.6"
> is wrong - we do need it or something like it.

Not in XFS, though.  This thing needs to be done genericly in NFSD.
Greg has been working on an open files cache in nfsd which should be
helping this.

Adding a cache like this back into XFS will get my veto (at least for
mainline where I have a bit of a say :))