Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753011AbdFNPQI (ORCPT ); Wed, 14 Jun 2017 11:16:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57273 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752984AbdFNPQE (ORCPT ); Wed, 14 Jun 2017 11:16:04 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com C8F975F7B6 Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=dhowells@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com C8F975F7B6 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 04/27] VFS: Make get_filesystem() return the affected filesystem [ver #5] From: David Howells To: mszeredi@redhat.com, viro@zeniv.linux.org.uk Cc: linux-nfs@vger.kernel.org, jlayton@redhat.com, linux-kernel@vger.kernel.org, dhowells@redhat.com, linux-security-module@vger.kernel.org, linux-fsdevel@vger.kernel.org Date: Wed, 14 Jun 2017 16:15:50 +0100 Message-ID: <149745335084.10897.6510651041826452700.stgit@warthog.procyon.org.uk> In-Reply-To: <149745330648.10897.9605870130502083184.stgit@warthog.procyon.org.uk> References: <149745330648.10897.9605870130502083184.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Wed, 14 Jun 2017 15:15:54 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1475 Lines: 40 Make get_filesystem() return a pointer to the filesystem on which it just got a ref. Suggested-by: Rasmus Villemoes Signed-off-by: David Howells --- fs/filesystems.c | 3 ++- include/linux/fs.h | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/filesystems.c b/fs/filesystems.c index cac75547d35c..591e52d23ed4 100644 --- a/fs/filesystems.c +++ b/fs/filesystems.c @@ -33,9 +33,10 @@ static struct file_system_type *file_systems; static DEFINE_RWLOCK(file_systems_lock); /* WARNING: This can be used only if we _already_ own a reference */ -void get_filesystem(struct file_system_type *fs) +struct file_system_type *get_filesystem(struct file_system_type *fs) { __module_get(fs->owner); + return fs; } void put_filesystem(struct file_system_type *fs) diff --git a/include/linux/fs.h b/include/linux/fs.h index 803e5a9b2654..bc0c054894b9 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2956,7 +2956,7 @@ extern int generic_block_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, u64 start, u64 len, get_block_t *get_block); -extern void get_filesystem(struct file_system_type *fs); +extern struct file_system_type *get_filesystem(struct file_system_type *fs); extern void put_filesystem(struct file_system_type *fs); extern struct file_system_type *get_fs_type(const char *name); extern struct super_block *get_super(struct block_device *);