linux-kernel - Re: [PATCH 00/17] VFS: Filesystem information and notifications [ver #17]

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Date:   Tue, 03 Mar 2020 15:53:49 +0000
From:   David Howells <dhowells@...hat.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     dhowells@...hat.com,
        Christian Brauner <christian.brauner@...ntu.com>,
        Miklos Szeredi <miklos@...redi.hu>,
        Karel Zak <kzak@...hat.com>, Ian Kent <raven@...maw.net>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        Steven Whitehouse <swhiteho@...hat.com>,
        Miklos Szeredi <mszeredi@...hat.com>,
        viro <viro@...iv.linux.org.uk>,
        Christian Brauner <christian@...uner.io>,
        Jann Horn <jannh@...gle.com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Linux API <linux-api@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 00/17] VFS: Filesystem information and notifications [ver #17]

Greg Kroah-Hartman <gregkh@...uxfoundation.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