Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757513AbXIQScY (ORCPT ); Mon, 17 Sep 2007 14:32:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756263AbXIQS1s (ORCPT ); Mon, 17 Sep 2007 14:27:48 -0400 Received: from e36.co.us.ibm.com ([32.97.110.154]:37917 "EHLO e36.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756246AbXIQS1r (ORCPT ); Mon, 17 Sep 2007 14:27:47 -0400 Subject: [PATCH 11/24] elevate write count for link and symlink calls To: akpm@osdl.org Cc: linux-kernel@vger.kernel.org, hch@infradead.org, Dave Hansen From: Dave Hansen Date: Mon, 17 Sep 2007 11:27:32 -0700 References: <20070917182718.70494C9B@kernel> In-Reply-To: <20070917182718.70494C9B@kernel> Message-Id: <20070917182732.AA579D3D@kernel> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1359 Lines: 43 Signed-off-by: Dave Hansen --- lxc-dave/fs/namei.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff -puN fs/namei.c~elevate-write-count-for-link-and-symlink-calls fs/namei.c --- lxc/fs/namei.c~elevate-write-count-for-link-and-symlink-calls 2007-09-17 09:44:02.000000000 -0700 +++ lxc-dave/fs/namei.c 2007-09-17 09:44:02.000000000 -0700 @@ -2324,7 +2324,12 @@ asmlinkage long sys_symlinkat(const char if (IS_ERR(dentry)) goto out_unlock; + error = mnt_want_write(nd.mnt); + if (error) + goto out_dput; error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO); + mnt_drop_write(nd.mnt); +out_dput: dput(dentry); out_unlock: mutex_unlock(&nd.dentry->d_inode->i_mutex); @@ -2419,7 +2424,12 @@ asmlinkage long sys_linkat(int olddfd, c error = PTR_ERR(new_dentry); if (IS_ERR(new_dentry)) goto out_unlock; + error = mnt_want_write(nd.mnt); + if (error) + goto out_dput; error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry); + mnt_drop_write(nd.mnt); +out_dput: dput(new_dentry); out_unlock: mutex_unlock(&nd.dentry->d_inode->i_mutex); _ - 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/