Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946474AbXBIWzg (ORCPT ); Fri, 9 Feb 2007 17:55:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1946157AbXBIWyT (ORCPT ); Fri, 9 Feb 2007 17:54:19 -0500 Received: from e1.ny.us.ibm.com ([32.97.182.141]:42479 "EHLO e1.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423373AbXBIWxp (ORCPT ); Fri, 9 Feb 2007 17:53:45 -0500 Subject: [PATCH 17/22] elevate mnt writers for vfs_unlink() callers To: linux-kernel@vger.kernel.org Cc: akpm@osdl.org, hch@infradead.org, Dave Hansen From: Dave Hansen Date: Fri, 09 Feb 2007 14:53:41 -0800 References: <20070209225329.27619A62@localhost.localdomain> In-Reply-To: <20070209225329.27619A62@localhost.localdomain> Message-Id: <20070209225341.75EBB290@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1547 Lines: 47 Signed-off-by: Dave Hansen --- lxc-dave/fs/namei.c | 4 ++++ lxc-dave/ipc/mqueue.c | 5 ++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff -puN fs/namei.c~19-24-elevate-mnt-writers-for-vfs-unlink-callers fs/namei.c --- lxc/fs/namei.c~19-24-elevate-mnt-writers-for-vfs-unlink-callers 2007-02-09 14:26:57.000000000 -0800 +++ lxc-dave/fs/namei.c 2007-02-09 14:26:57.000000000 -0800 @@ -2181,7 +2181,11 @@ static long do_unlinkat(int dfd, const c inode = dentry->d_inode; if (inode) atomic_inc(&inode->i_count); + error = mnt_want_write(nd.mnt); + if (error) + goto exit2; error = vfs_unlink(nd.dentry->d_inode, dentry); + mnt_drop_write(nd.mnt); exit2: dput(dentry); } diff -puN ipc/mqueue.c~19-24-elevate-mnt-writers-for-vfs-unlink-callers ipc/mqueue.c --- lxc/ipc/mqueue.c~19-24-elevate-mnt-writers-for-vfs-unlink-callers 2007-02-09 14:26:57.000000000 -0800 +++ lxc-dave/ipc/mqueue.c 2007-02-09 14:26:57.000000000 -0800 @@ -749,8 +749,11 @@ asmlinkage long sys_mq_unlink(const char inode = dentry->d_inode; if (inode) atomic_inc(&inode->i_count); - + err = mnt_want_write(mqueue_mnt); + if (err) + goto out_err; err = vfs_unlink(dentry->d_parent->d_inode, dentry); + mnt_drop_write(mqueue_mnt); out_err: dput(dentry); _ - 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/