From: Miklos Szeredi <miklos@szeredi.hu>
To: Andy Lutomirski <luto@amacapital.net>
Cc: David Howells <dhowells@redhat.com>,
"Theodore Y. Ts'o" <tytso@mit.edu>,
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 19:08:00 +0200 [thread overview]
Message-ID: <CAJfpegvgvmC_d4OndH=drW4Xoo=Q892O_+YDV9VTGS6CGmmjBQ@mail.gmail.com> (raw)
In-Reply-To: <F5276157-1D28-4B6F-AD08-55E3021434F0@amacapital.net>
On Fri, Aug 24, 2018 at 5:09 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>
>> On Aug 24, 2018, at 8:02 AM, Miklos Szeredi <miklos@szeredi.hu> wrote:
>>
>>> On Fri, Aug 24, 2018 at 4:49 PM, Andy Lutomirski <luto@amacapital.net> wrote:
>>>
>>>
>>>>> On Aug 24, 2018, at 2:45 AM, David Howells <dhowells@redhat.com> wrote:
>>>>
>>>>
>>>>
>>>> The problem is that "exclusivity" isn't necessarily an easy thing to define.
>>>> Take nfs4 and btrfs for example. They creating a backing superblock that the
>>>> actual node is derived from (though in different ways). How do you define
>>>> what "exclusive" means in their case?
>>>>
>>>
>>> I would argue that “exclusive” means “semantically equivalent to getting a fully independent instance.”
>>
>> The only way to get semantically equivalent instance is to create a
>> fully independent instance. See reconfigure (nee remount).
>>
>>
>
> Hmm. Is it that case in the current patchset that you can do CMD_CREATE and reconfigure the result and some *other* existing mount will change? If so, that’s rather unfriendly to users.
Exactly.
Thanks,
Miklos
next prev parent reply other threads:[~2018-08-24 20:43 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
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 [this message]
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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