Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751902AbcJMPF7 (ORCPT ); Thu, 13 Oct 2016 11:05:59 -0400 Received: from mail-qk0-f193.google.com ([209.85.220.193]:34146 "EHLO mail-qk0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756006AbcJMPFu (ORCPT ); Thu, 13 Oct 2016 11:05:50 -0400 Date: Thu, 13 Oct 2016 16:51:46 +0200 From: Miklos Szeredi To: Linus Torvalds Cc: Al Viro , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-unionfs@vger.kernel.org Subject: Re: [GIT PULL] overlayfs update for 4.9 Message-ID: <20161013145146.GF31239@veci.piliscsaba.szeredi.hu> References: <20161013143751.GE31239@veci.piliscsaba.szeredi.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161013143751.GE31239@veci.piliscsaba.szeredi.hu> User-Agent: Mutt/1.7.0 (2016-08-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2414 Lines: 70 On Thu, Oct 13, 2016 at 04:37:51PM +0200, Miklos Szeredi wrote: > Hi Linus, > > Please pull from: > > git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-linus > > I tried to submit this though Al because of the VFS changes, but failed > unfortunately. The VFS changes are small and should only affect overlayfs, so > here it is. Forgot to mention that it contains a conflict against the xattr update from Andreas. The resolution is to take my version as we now can and should do permission checks on the underlying layers (with mounter's permission). Thanks, Miklos > > This update contains the following changes: > > - a couple of fixes in the "use mounter's permission to access underlying > layers" area; > > - mnt_want_write_file() should freeze protect the underlying layer, except in > the case of i_ops, where the callee is expected to do that > > - use "clone_file_range" to copy up if possible, resulting in a substantial > speedup; > > - misc fixes and cleanups. > > Thanks, > Miklos > > --- > Amir Goldstein (3): > vfs: allow vfs_clone_file_range() across mount points > vfs: call vfs_clone_file_range() under mnt_want_write() > ovl: use vfs_clone_file_range() for copy up if possible > > Miklos Szeredi (7): > ovl: copy_up_xattr(): use strnlen > ovl: lookup: do getxattr with mounter's permission > vfs: mnt_want_write_file() should freeze protect underlying sb > ovl: explain error values when removing acl from workdir > ovl: use generic_readlink > vfs: add vfs_get_link() helper > ovl: use vfs_get_link() > > Richard Weinberger (1): > ovl: Fix info leak in ovl_lookup_temp() > > Vivek Goyal (1): > ovl: during copy up, switch to mounter's creds early > > --- > fs/ioctl.c | 5 +++- > fs/namei.c | 25 +++++++++++++++++ > fs/namespace.c | 7 +++-- > fs/nfsd/vfs.c | 3 +- > fs/open.c | 15 +++++----- > fs/overlayfs/copy_up.c | 75 +++++++++++++++++++------------------------------- > fs/overlayfs/dir.c | 5 +++- > fs/overlayfs/inode.c | 44 +++++++---------------------- > fs/overlayfs/super.c | 33 ++++++++++++++-------- > fs/read_write.c | 13 ++++----- > fs/xattr.c | 13 ++++++--- > include/linux/fs.h | 14 ++++++++++ > 12 files changed, 135 insertions(+), 117 deletions(-)