From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-nfs-owner@vger.kernel.org Received: from bear.ext.ti.com ([192.94.94.41]:53167 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757304Ab2BHCpd (ORCPT ); Tue, 7 Feb 2012 21:45:33 -0500 Received: from dlep26.itg.ti.com ([157.170.170.121]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id q182jWCM002406 for ; Tue, 7 Feb 2012 20:45:32 -0600 Received: from DLEE74.ent.ti.com (localhost [127.0.0.1]) by dlep26.itg.ti.com (8.13.8/8.13.8) with ESMTP id q182jWok009621 for ; Tue, 7 Feb 2012 20:45:32 -0600 (CST) Received: from [172.24.113.225] (h113-225.vpn.ti.com [172.24.113.225]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id q182jVDT029209 for ; Tue, 7 Feb 2012 20:45:32 -0600 Message-ID: <4F31E1CA.8060105@ti.com> Date: Tue, 7 Feb 2012 20:45:30 -0600 From: Derek McEachern MIME-Version: 1.0 To: Subject: NFS Mount Option 'nofsc' Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: I joined the mailing list shortly after Neil sent out a request for volunteer to update the nfs man page documenting the 'fsc'/'nofsc' options. I suspect this may stem from a ticket we opened with Suse inquiring about these options. Coming from a Solaris background we typically use the 'forcedirectio' option for certain mounts and I was looking for the same thing in Linux. The typically advice seems to be use 'noac' but the description in the man page doesn't seem to match what I would expect from 'forcedirectio', namely no buffering on the client. Poking around the kernel I found the 'fsc'/'nofsc' options and my question is does 'nofsc' provide 'forcedirectio' functionality? Thanks, Derek