linux-kernel - [ 26/34] eCryptfs: Clear i

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Message-Id: <20120301213926.418676242@linuxfoundation.org>
Date:	Thu, 01 Mar 2012 13:39:48 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Tyler Hicks <tyhicks@...ux.vnet.ibm.com>,
	Colin King <colin.king@...onical.com>,
	Tim Gardner <tim.gardner@...onical.com>
Subject: [ 26/34] eCryptfs: Clear i_nlink in rmdir

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: Tyler Hicks <tyhicks@...ux.vnet.ibm.com>

commit 07850552b92b3637fa56767b5e460b4238014447 upstream.

eCryptfs wasn't clearing the eCryptfs inode's i_nlink after a successful
vfs_rmdir() on the lower directory. This resulted in the inode evict and
destroy paths to be missed.

https://bugs.launchpad.net/ecryptfs/+bug/723518

Signed-off-by: Tyler Hicks <tyhicks@...ux.vnet.ibm.com>
Signed-off-by: Colin King <colin.king@...onical.com>
Signed-off-by: Tim Gardner <tim.gardner@...onical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/ecryptfs/inode.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -575,6 +575,8 @@ static int ecryptfs_rmdir(struct inode *
 	dget(lower_dentry);
 	rc = vfs_rmdir(lower_dir_dentry->d_inode, lower_dentry);
 	dput(lower_dentry);
+	if (!rc && dentry->d_inode)
+		clear_nlink(dentry->d_inode);
 	fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
 	dir->i_nlink = lower_dir_dentry->d_inode->i_nlink;
 	unlock_dir(lower_dir_dentry);


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