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

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To: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Subject: Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
From: David Howells <dhowells@xxxxxxxxxx>
Date: Fri, 13 Jul 2018 00:35:59 +0100
Cc: dhowells@xxxxxxxxxx, "Theodore Y. Ts'o" <tytso@xxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Andrew Lutomirski <luto@xxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Linux API <linux-api@xxxxxxxxxxxxxxx>, linux-fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>
In-reply-to: <611054C7-D6E8-4C89-958E-3128C9305E1E@amacapital.net>
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

Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:

> I tend to think that this *should* fail using the new API.  The semantics of
> the second mount request are bizarre at best.

You still have to support existing behaviour lest you break userspace.

David

Follow-Ups:
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: David Howells
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: Andy Lutomirski

References:
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: Andy Lutomirski
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: Theodore Y. Ts'o
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: Linus Torvalds
- [PATCH 00/32] VFS: Introduce filesystem context [ver #9]
  - From: David Howells
- [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: David Howells
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: Andy Lutomirski
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: David Howells
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: Andy Lutomirski
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: David Howells
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: Linus Torvalds
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: David Howells
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: David Howells
- Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]
  - From: David Howells

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