From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve French Subject: mount options and dnotify Date: 28 Apr 2004 12:36:26 -0500 Sender: linux-fsdevel-owner@vger.kernel.org Message-ID: <1083173785.4845.29.camel@stevef95.austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from e2.ny.us.ibm.com ([32.97.182.102]:37761 "EHLO e2.ny.us.ibm.com") by vger.kernel.org with ESMTP id S265011AbUD1Rhb (ORCPT ); Wed, 28 Apr 2004 13:37:31 -0400 Received: from northrelay02.pok.ibm.com (northrelay02.pok.ibm.com [9.56.224.150]) by e2.ny.us.ibm.com (8.12.10/8.12.2) with ESMTP id i3SHbRiJ464466 for ; Wed, 28 Apr 2004 13:37:28 -0400 Received: from stevef95-009041091094.austin.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by northrelay02.pok.ibm.com (8.12.10/NCO/VER6.6) with ESMTP id i3SHbfgs084646 for ; Wed, 28 Apr 2004 13:37:41 -0400 To: linux-fsdevel@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Since two of the linux specific fcntls F_NOTIFY and F_SETLEASE could have performance implications if allowed over the network, yet in at least the case of directory change notification can be quite important (e.g. for KDE and GNOME to auto refresh their file manager GUIs as new files appear) - is there a precedent for a filesystem specific mount option to disable (or enable) directory change (and/or file change) notification? I was thinking of adding parsing for "notify=no" (or perhaps better to call it dnotify=no) or "lease=no" on the cifs specific mount options to allow control over whether these notification events only work locally (or work for both local and remote changes) in case there are servers out which contribute to "dnotify storms" (lots of directory change notifications in a short period). And on a loosely related subject, I noticed that kernel.org has gz snapshots of the mount utility and man page (e.g.in http://www.kernel.org/pub/linux/utils/util-linux/) but I did not see the name of a maintainer of the mount(8) man page in the page. I wanted to send them suggested additional text pointing to the mount.cifs(8) man page for cifs mounts (similar to what they do for a few others including smbfs).