Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley
        Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United
        Kingdom.
        Registered in England and Wales under Company Registration No. 3798903
From:   David Howells <dhowells@redhat.com>
In-Reply-To: <20200303152352.GA221026@kroah.com>
References: <20200303152352.GA221026@kroah.com> <CAJfpegu0qHBZ7iK=R4ajmmHC4g=Yz56otpKMy5w-y0UxJ1zO+Q@mail.gmail.com> <0403cda7345e34c800eec8e2870a1917a8c07e5c.camel@themaw.net> <CAJfpegtu6VqhPdcudu79TX3e=_NZaJ+Md3harBGV7Bg_-+fR8Q@mail.gmail.com> <1509948.1583226773@warthog.procyon.org.uk> <CAJfpegtOwyaWpNfjomRVOt8NKqT94O5n4-LOHTR7YZT9fadVHA@mail.gmail.com> <20200303113814.rsqhljkch6tgorpu@ws.net.home> <20200303130347.GA2302029@kroah.com> <20200303131434.GA2373427@kroah.com> <CAJfpegt0aQVvoDeBXOu2xZh+atZQ+q5uQ_JRxe46E8cZ7sHRwg@mail.gmail.com> <20200303142351.vtc2ldqltev5jo4h@wittgenstein>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     dhowells@redhat.com,
        Christian Brauner <christian.brauner@ubuntu.com>,
        Miklos Szeredi <miklos@szeredi.hu>,
        Karel Zak <kzak@redhat.com>, Ian Kent <raven@themaw.net>,
        James Bottomley <James.Bottomley@hansenpartnership.com>,
        Steven Whitehouse <swhiteho@redhat.com>,
        Miklos Szeredi <mszeredi@redhat.com>,
        viro <viro@zeniv.linux.org.uk>,
        Christian Brauner <christian@brauner.io>,
        Jann Horn <jannh@google.com>,
        "Darrick J. Wong" <darrick.wong@oracle.com>,
        Linux API <linux-api@vger.kernel.org>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 00/17] VFS: Filesystem information and notifications [ver #17]
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <1842202.1583250829.1@warthog.procyon.org.uk>
Date:   Tue, 03 Mar 2020 15:53:49 +0000
Message-ID: <1842203.1583250829@warthog.procyon.org.uk>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:

> If you look at the patch I posted in this thread, I think it properly
> supports open_how and RESOLVE_* flags.  But remember it's opening a file
> that is already present, in RO mode, no creation allowed, so most of the
> open_how interactions are limited.

Something we should consider adding to openat2() at some point is the ability
to lock on open/create.  Various network filesystems support it.

David