From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Hansen Subject: [PATCH 09/23] elevate mnt writers for callers of vfs_mkdir() Date: Wed, 11 Jul 2007 17:17:22 -0700 Message-ID: <20070712001722.4068399A@kernel> References: <20070712001710.654CD9ED@kernel> Cc: linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, hch@infradead.org, Dave Hansen To: linux-kernel@vger.kernel.org Return-path: Received: from e32.co.us.ibm.com ([32.97.110.150]:36156 "EHLO e32.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S937072AbXGLAR1 (ORCPT ); Wed, 11 Jul 2007 20:17:27 -0400 In-Reply-To: <20070712001710.654CD9ED@kernel> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Pretty self-explanatory. Fits in with the rest of the series. Signed-off-by: Dave Hansen --- lxc-dave/fs/namei.c | 5 +++++ lxc-dave/fs/nfsd/nfs4recover.c | 4 ++++ 2 files changed, 9 insertions(+) diff -puN fs/namei.c~elevate-mnt-writers-for-callers-of-vfs-mkdir fs/namei.c --- lxc/fs/namei.c~elevate-mnt-writers-for-callers-of-vfs-mkdir 2007-07-10 12:46:07.000000000 -0700 +++ lxc-dave/fs/namei.c 2007-07-10 12:46:07.000000000 -0700 @@ -1993,7 +1993,12 @@ asmlinkage long sys_mkdirat(int dfd, con if (!IS_POSIXACL(nd.dentry->d_inode)) mode &= ~current->fs->umask; + error = mnt_want_write(nd.mnt); + if (error) + goto out_dput; error = vfs_mkdir(nd.dentry->d_inode, dentry, mode); + mnt_drop_write(nd.mnt); +out_dput: dput(dentry); out_unlock: mutex_unlock(&nd.dentry->d_inode->i_mutex); diff -puN fs/nfsd/nfs4recover.c~elevate-mnt-writers-for-callers-of-vfs-mkdir fs/nfsd/nfs4recover.c --- lxc/fs/nfsd/nfs4recover.c~elevate-mnt-writers-for-callers-of-vfs-mkdir 2007-07-10 12:46:07.000000000 -0700 +++ lxc-dave/fs/nfsd/nfs4recover.c 2007-07-10 12:46:07.000000000 -0700 @@ -156,7 +156,11 @@ nfsd4_create_clid_dir(struct nfs4_client dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n"); goto out_put; } + status = mnt_want_write(rec_dir.mnt); + if (status) + goto out_put; status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU); + mnt_drop_write(rec_dir.mnt); out_put: dput(dentry); out_unlock: _