linux-kernel - [PATCH 1/10] VFS: Fix error handling of write_super

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Date:	Mon, 22 Sep 2008 19:55:26 +0900
From:	Takashi Sato <t-sato@...jp.nec.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"dm-devel@...hat.com" <dm-devel@...hat.com>,
	"viro@...IV.linux.org.uk" <viro@...IV.linux.org.uk>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	"xfs@....sgi.com" <xfs@....sgi.com>,
	"axboe@...nel.dk" <axboe@...nel.dk>,
	"mtk.manpages@...glemail.com" <mtk.manpages@...glemail.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/10] VFS: Fix error handling of write_super_lockfs/unlockfs

I've changed the type of write_super_lockfs and unlockfs from "void" to
"int" so that they can return an error. 

Signed-off-by: Takashi Sato <t-sato@...jp.nec.com>
Signed-off-by: Masayuki Hamaguchi <m-hamaguchi@...jp.nec.com>
---
 Documentation/filesystems/Locking |    4 ++--
 Documentation/filesystems/vfs.txt |    4 ++--
 include/linux/fs.h                |    4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff -uprN -X linux-2.6.27-rc7.org/Documentation/dontdiff linux-2.6.27-rc7.org/Documentation/filesystems/Locking linux-2
.6.27-rc7-lockfs/Documentation/filesystems/Locking
--- linux-2.6.27-rc7.org/Documentation/filesystems/Locking	2008-09-22 07:29:55.000000000 +0900
+++ linux-2.6.27-rc7-lockfs/Documentation/filesystems/Locking	2008-09-22 09:53:22.000000000 +0900
@@ -97,8 +97,8 @@ prototypes:
 	void (*put_super) (struct super_block *);
 	void (*write_super) (struct super_block *);
 	int (*sync_fs)(struct super_block *sb, int wait);
-	void (*write_super_lockfs) (struct super_block *);
-	void (*unlockfs) (struct super_block *);
+	int (*write_super_lockfs) (struct super_block *);
+	int (*unlockfs) (struct super_block *);
 	int (*statfs) (struct dentry *, struct kstatfs *);
 	int (*remount_fs) (struct super_block *, int *, char *);
 	void (*clear_inode) (struct inode *);
diff -uprN -X linux-2.6.27-rc7.org/Documentation/dontdiff linux-2.6.27-rc7.org/Documentation/filesystems/vfs.txt linux-2
.6.27-rc7-lockfs/Documentation/filesystems/vfs.txt
--- linux-2.6.27-rc7.org/Documentation/filesystems/vfs.txt	2008-09-22 07:29:55.000000000 +0900
+++ linux-2.6.27-rc7-lockfs/Documentation/filesystems/vfs.txt	2008-09-22 09:53:22.000000000 +0900
@@ -210,8 +210,8 @@ struct super_operations {
         void (*put_super) (struct super_block *);
         void (*write_super) (struct super_block *);
         int (*sync_fs)(struct super_block *sb, int wait);
-        void (*write_super_lockfs) (struct super_block *);
-        void (*unlockfs) (struct super_block *);
+        int (*write_super_lockfs) (struct super_block *);
+        int (*unlockfs) (struct super_block *);
         int (*statfs) (struct dentry *, struct kstatfs *);
         int (*remount_fs) (struct super_block *, int *, char *);
         void (*clear_inode) (struct inode *);
diff -uprN -X linux-2.6.27-rc7.org/Documentation/dontdiff linux-2.6.27-rc7.org/include/linux/fs.h linux-2.6.27-rc7-lockf
s/include/linux/fs.h
--- linux-2.6.27-rc7.org/include/linux/fs.h	2008-09-22 07:29:55.000000000 +0900
+++ linux-2.6.27-rc7-lockfs/include/linux/fs.h	2008-09-22 09:53:46.000000000 +0900
@@ -1314,8 +1314,8 @@ struct super_operations {
 	void (*put_super) (struct super_block *);
 	void (*write_super) (struct super_block *);
 	int (*sync_fs)(struct super_block *sb, int wait);
-	void (*write_super_lockfs) (struct super_block *);
-	void (*unlockfs) (struct super_block *);
+	int (*write_super_lockfs) (struct super_block *);
+	int (*unlockfs) (struct super_block *);
 	int (*statfs) (struct dentry *, struct kstatfs *);
 	int (*remount_fs) (struct super_block *, int *, char *);
 	void (*clear_inode) (struct inode *);
--
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