Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760039Ab1CDRPW (ORCPT ); Fri, 4 Mar 2011 12:15:22 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:39229 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759978Ab1CDRPT (ORCPT ); Fri, 4 Mar 2011 12:15:19 -0500 Date: Fri, 4 Mar 2011 17:15:18 +0000 From: Al Viro To: chris.mason@oracle.com Cc: linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org Subject: [PATCH 2/2] btrfs: check link counter overflow in link(2) 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 Content-Disposition: inline In-Reply-To: <20110304171353.GU22723@ZenIV.linux.org.uk> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 794 Lines: 28 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/