From: Christoph Hellwig <hch@infradead.org>
Subject: Re: Read/Write NFS I/O performance degraded by FLUSH_STABLE page
	flushing
Date: Fri, 5 Jun 2009 10:54:50 -0400
Message-ID: <20090605145450.GA11988@infradead.org>
References: <5ECD2205-4DC9-41F1-AC5C-ADFA984745D3@oracle.com> <49FA0CE8.9090706@redhat.com> <1241126587.15476.62.camel@heimdal.trondhjem.org> <OF820C8732.74757E21-ON852575C5.0055C089-852575C5.00578071@us.ibm.com> <1243615595.7155.48.camel@heimdal.trondhjem.org> <OF0EEDB635.561D17D4-ON852575C5.005CBABA-852575C5.005FAD0D@us.ibm.com> <1243618500.7155.56.camel@heimdal.trondhjem.org> <ac442c870905291722x1ec811b2sda997d464898fcda@mail.gmail.com> <20090530075756.GA27885@infradead.org> <20090601223008.GF5950@fieldses.org>
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Cc: Krishna Kumar <krikku@gmail.com>, Greg Banks <gnb-xTcybq6BZ68@public.gmane.org>,
	Trond Myklebust <trond.myklebust@fys.uio.no>,
	Brian R Cowan <brcowan@us.ibm.com>,
	Chuck Lever <chuck.lever@oracle.com>,
	linux-nfs@vger.kernel.org, linux-nfs-owner@vger.kernel.org,
	Peter Staubach <staubach@redhat.com>,
	Christoph Hellwig <hch@infradead.org>
To: "J. Bruce Fields" <bfields@fieldses.org>
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On Mon, Jun 01, 2009 at 06:30:08PM -0400, J. Bruce Fields wrote:
> > NFSD stops calling ->fsync without a file struct.
> > 
> > I think the open file cache will help us with that, if we can extend
> > it to also cache open file structs for directories.
> 
> Krishna Kumar--do you think that'd be a reasonable thing to do?

Btw, do you have at least the basic open files cache queue for 2.6.31?