From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753277Ab2HCRfF (ORCPT ); Fri, 3 Aug 2012 13:35:05 -0400 Received: from mail-gh0-f174.google.com ([209.85.160.174]:63414 "EHLO mail-gh0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751527Ab2HCRfB (ORCPT ); Fri, 3 Aug 2012 13:35:01 -0400 From: Sachidananda Urs To: Rob Landley , Al Viro , Fengguang Wu , Jan Kara , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Sachidananda Urs Subject: [PATCH] Documentation/filesystems/porting: Update documentation. Date: Fri, 3 Aug 2012 23:04:25 +0530 Message-Id: <1344015265-6752-1-git-send-email-sacchi@gmail.com> X-Mailer: git-send-email 1.7.7.6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ->get_sb() is no longer used, update documentation to use ->mount(). Also added a example for struct file_system_type. Signed-off-by: Sachidananda Urs --- Documentation/filesystems/porting | 20 +++++++++++++------- 1 files changed, 13 insertions(+), 7 deletions(-) diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting index 2bef2b3..d6d53fb 100644 --- a/Documentation/filesystems/porting +++ b/Documentation/filesystems/porting @@ -42,26 +42,32 @@ At some point that will become mandatory. --- [mandatory] -Change of file_system_type method (->read_super to ->get_sb) +Change of file_system_type method (->read_super to ->get_sb to ->mount) -->read_super() is no more. Ditto for DECLARE_FSTYPE and DECLARE_FSTYPE_DEV. +->read_super() is no more and so is ->get_sb. Ditto for DECLARE_FSTYPE and + DECLARE_FSTYPE_DEV. Turn your foo_read_super() into a function that would return 0 in case of success and negative number in case of error (-EINVAL unless you have more informative error value to report). Call it foo_fill_super(). Now declare -int foo_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, struct vfsmount *mnt) +static struct dentry *foo_mount(struct file_system_type *fs_type, int flags, + const char *dev_name, void *data) { - return get_sb_bdev(fs_type, flags, dev_name, data, foo_fill_super, - mnt); + return mount_bdev(fs_type, flags, dev_name, data, foo_fill_super); } (or similar with s/bdev/nodev/ or s/bdev/single/, depending on the kind of filesystem). Replace DECLARE_FSTYPE... with explicit initializer and have ->get_sb set as -foo_get_sb. +foo_mount. For example: + +static struct file_system_type foo_fs_type = { + .owner = THIS_MODULE, + .name = "foo", + .mount = foo_mount, +}; --- [mandatory] -- 1.7.7.6