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From: David Howells <dhowells@redhat.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: dhowells@redhat.com, Al Viro <viro@zeniv.linux.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Linux FS Devel <linux-fsdevel@vger.kernel.org>,
	Linux API <linux-api@vger.kernel.org>
Subject: Re: [git pull] new mount API
Date: Fri, 24 Aug 2018 01:08:36 +0100	[thread overview]
Message-ID: <24340.1535069316@warthog.procyon.org.uk> (raw)
In-Reply-To: <CALCETrVnwFGhZ0XWqyAsrOka43VohncrSd-gYgXXKxWHw+CmXg@mail.gmail.com>

Andy Lutomirski <luto@amacapital.net> wrote:

> Has anything been done to ensure that the behavior when doing
> FSCONFIG_CMD_CREATE against an already-mounted block device is
> reasonable?

For the moment, I've left it as the same behaviour as for mount(2) since
mount(2) now uses the same mechanism internally and we aren't permitted to
break userspace.

I would like to add at least one flag to stipulate that, in the case of an
incompatible collision, you can get a failure - but defining what is meant by
incompatible isn't necessarily trivial, and would vary by filesystem *and* the
LSM.

However, I don't want to start reengineering everything this close to the
merge window and we don't really need it immediately.

David

  parent reply	other threads:[~2018-08-24  3:40 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-23 22:31 [git pull] new mount API Al Viro
2018-08-23 23:24 ` Andy Lutomirski
2018-08-24  0:08 ` David Howells [this message]
2018-08-24  0:16   ` Andy Lutomirski
2018-08-24  0:31     ` Al Viro
2018-08-24  2:36       ` Andy Lutomirski
2018-08-24  3:13         ` Al Viro
2018-08-24  4:51           ` Andy Lutomirski
2018-08-24  6:05             ` Theodore Y. Ts'o
2018-08-24  8:38               ` Miklos Szeredi
2018-08-24  8:56                 ` Miklos Szeredi
2018-08-24  9:29                   ` Miklos Szeredi
2018-08-24  9:45               ` David Howells
2018-08-24 10:06                 ` Miklos Szeredi
2018-08-24 14:18                 ` Miklos Szeredi
2018-08-24 14:26                   ` Karel Zak
2018-08-24 14:26                 ` David Howells
2018-08-24 14:30                   ` Miklos Szeredi
2018-08-24 14:49                 ` Andy Lutomirski
2018-08-24 15:02                   ` Miklos Szeredi
2018-08-24 15:09                     ` Andy Lutomirski
2018-08-24 17:08                       ` Miklos Szeredi
2018-08-24 17:10                     ` David Howells
2018-08-24 17:43                       ` Andy Lutomirski
2018-08-24 19:25                         ` Miklos Szeredi
2018-08-24 19:51                           ` Al Viro
2018-08-29 12:32                             ` Miklos Szeredi
2018-08-26  3:22 ` Eric W. Biederman
2018-08-26 20:42 ` David Howells
2018-08-26 20:46 ` David Howells
2018-08-26 21:03 ` [PATCH] mqueue: Fix bug from mount API conversion David Howells
2018-08-26 21:22   ` Al Viro

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