linux-kernel - [ 09/13] eCryptfs: Clear i

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Message-Id: <20120312004411.684537255@1wt.eu>
Date:	Mon, 12 Mar 2012 01:44:20 +0100
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Tyler Hicks <tyhicks@...ux.vnet.ibm.com>,
	Colin King <colin.king@...onical.com>,
	Tim Gardner <tim.gardner@...onical.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [ 09/13] eCryptfs: Clear i_nlink in rmdir

2.6.27-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 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 79ae6a7..4434e8f 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -575,6 +575,8 @@ static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
 	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);
-- 
1.7.2.1.45.g54fbc



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