Patchwork [2/5] ext4: ext4_rename should dirty dir_bh with the correct directory

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Submitter Darrick J. Wong
Date Oct. 21, 2011, 9:18 p.m.
Message ID <20111021211806.10784.76743.stgit@elm3c44.beaverton.ibm.com>
Download mbox | patch
Permalink /patch/121067/
State Superseded
Headers show

Comments

Darrick J. Wong - Oct. 21, 2011, 9:18 p.m.
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@us.ibm.com>
---
 fs/ext4/namei.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)



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Theodore Ts'o - Oct. 25, 2011, 1:08 p.m.
On Fri, Oct 21, 2011 at 02:18:06PM -0700, Darrick J. Wong wrote:
> 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@us.ibm.com>

This was already merged (git commit: bcaa9929750 in the master branch).

     	 	 	     	     		 - Ted
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Patch

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 310b356..6d3fab4 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2530,7 +2530,7 @@  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;