From mboxrd@z Thu Jan 1 00:00:00 1970 From: Al Viro Subject: [PATCH 2/2] btrfs: check link counter overflow in link(2) Date: Fri, 4 Mar 2011 17:15:18 +0000 Message-ID: <20110304171518.GB26708@ZenIV.linux.org.uk> References: <20110304171353.GU22723@ZenIV.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org To: chris.mason@oracle.com Return-path: In-Reply-To: <20110304171353.GU22723@ZenIV.linux.org.uk> List-ID: Signed-off-by: Al Viro --- fs/btrfs/inode.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 099d64c..8a6df03 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4826,6 +4826,9 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, if (root->objectid != BTRFS_I(inode)->root->objectid) return -EPERM; + if (inode->i_nlink == ~0U) + return -EMLINK; + btrfs_inc_nlink(inode); inode->i_ctime = CURRENT_TIME; -- 1.7.2.5