From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754336Ab2LCJyR (ORCPT ); Mon, 3 Dec 2012 04:54:17 -0500 Received: from mail.parknet.co.jp ([210.171.160.6]:44250 "EHLO mail.parknet.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753528Ab2LCJyP (ORCPT ); Mon, 3 Dec 2012 04:54:15 -0500 From: OGAWA Hirofumi To: Namjae Jeon Cc: akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Namjae Jeon , Ravishankar N , Amit Sahrawat Subject: Re: [PATCH v5 8/8] Documentation: update nfs option in filesystem/vfat.txt References: <1353504328-6054-1-git-send-email-linkinjeon@gmail.com> Date: Mon, 03 Dec 2012 18:54:13 +0900 In-Reply-To: <1353504328-6054-1-git-send-email-linkinjeon@gmail.com> (Namjae Jeon's message of "Wed, 21 Nov 2012 22:25:28 +0900") Message-ID: <87d2yr5um2.fsf@devron.myhome.or.jp> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Namjae Jeon writes: > From: Namjae Jeon > > update nfs option in filesystem/vfat.txt > > Signed-off-by: Namjae Jeon > Signed-off-by: Ravishankar N > Signed-off-by: Amit Sahrawat > --- > Documentation/filesystems/vfat.txt | 23 ++++++++++++++++++----- > 1 file changed, 18 insertions(+), 5 deletions(-) > > diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt > index d230dd9..f663c70 100644 > --- a/Documentation/filesystems/vfat.txt > +++ b/Documentation/filesystems/vfat.txt > @@ -150,13 +150,26 @@ discard -- If set, issues discard/TRIM commands to the block > device when blocks are freed. This is useful for SSD devices > and sparse/thinly-provisoned LUNs. > > -nfs -- This option maintains an index (cache) of directory > - inodes by i_logstart which is used by the nfs-related code to > - improve look-ups. > - > - Enable this only if you want to export the FAT filesystem > +nfs= stale_rw|nostale_ro > + -- Enable this only if you want to export the FAT filesystem > over NFS > > + stale_rw:This option maintains an index (cache) of directory > + inodes by i_logstart which is used by the nfs-related code to > + improve look-ups.Full file operations (read/write) over NFS is supported > + but with cache eviction at NFS server, this could result in ESTALE issues. > + > + nostale_ro:This option bases the inode number and filehandle on the on-disk > + location of a file in the MS-DOS directory entry.This ensures that ESTALE > + will not be returned after a file is evicted from the inode cache. However, > + it means that operations such as rename, create and unlink could cause > + filehandles that previously pointed at one file to point at a different file, > + potentially causing data corruption. For this reason, this option also mounts > + the filesystem readonly. > + > + To maintain backward compatibility, '-o nfs' is also accepted, defaulting to > + stale_rw Please add whitespace after ":" and ".". And please care 80 columns. -- OGAWA Hirofumi