linux-kernel - Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]

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Message-ID: <20180711011610.GM30522@ZenIV.linux.org.uk>
Date:   Wed, 11 Jul 2018 02:16:11 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Jann Horn <jannh@...gle.com>
Cc:     Andy Lutomirski <luto@...capital.net>,
        David Howells <dhowells@...hat.com>,
        Linux API <linux-api@...r.kernel.org>,
        linux-fsdevel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for
 superblock creation [ver #9]

On Tue, Jul 10, 2018 at 06:14:10PM -0700, Jann Horn wrote:

> I also love ioctls, so I think you could also use an ioctl to do the
> commit? You can do anything (well, almost anything) that you can do in
> syscall context in ioctl context, too; and when you already have a
> file descriptor of a specific type that you want to perform an
> operation on, an ioctl works just fine.

Poe's Law in action...