linux-kernel - [PATCH] ext4_rename should dirty dir

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Message-ID: <20110817033544.GO20655@tux1.beaverton.ibm.com>
Date:	Tue, 16 Aug 2011 20:35:44 -0700
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	"Theodore Ts'o" <tytso@....edu>
Cc:	linux-ext4 <linux-ext4@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] ext4_rename should dirty dir_bh with the correct directory

When ext4_rename performs a directory rename (move), dir_bh is a buffer that is
modified to update the '..' link in the directory being moved (old_inode).
However, ext4_handle_dirty_metadata is called with the old parent directory
inode (old_dir) and dir_bh, which is incorrect because dir_bh does not belong
to the parent inode.  Fix this error.

Signed-off-by: Darrick J. Wong <djwong@...ibm.com>
---

 fs/ext4/namei.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 79ddc43..2b5c34b 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2538,7 +2538,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 		PARENT_INO(dir_bh->b_data, new_dir->i_sb->s_blocksize) =
 						cpu_to_le32(new_dir->i_ino);
 		BUFFER_TRACE(dir_bh, "call ext4_handle_dirty_metadata");
-		retval = ext4_handle_dirty_metadata(handle, old_dir, dir_bh);
+		retval = ext4_handle_dirty_metadata(handle, old_inode, dir_bh);
 		if (retval) {
 			ext4_std_error(old_dir->i_sb, retval);
 			goto end_rename;
--
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