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From: Al Viro <viro@zeniv.linux.org.uk>
To: Florian Margaine <florian@platform.sh>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] fs: allow do_renameat2() over bind mounts of the same filesystem.
Date: Fri, 28 Aug 2020 22:34:45 +0100	[thread overview]
Message-ID: <20200828213445.GM1236603@ZenIV.linux.org.uk> (raw)
In-Reply-To: <871rjqh5bw.fsf@platform.sh>

On Fri, Aug 28, 2020 at 10:40:35PM +0200, Florian Margaine wrote:
> There's currently this seemingly unnecessary limitation that rename()
> cannot work over bind mounts of the same filesystem,

... is absolutely deliberate - that's how you set a boundary in the
tree, preventing both links and renames across it.

Incidentally, doing that would have fun effects for anyone with current
directory inside the subtree you'd moved - try and see.

  reply	other threads:[~2020-08-28 21:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-28 20:40 [PATCH] fs: allow do_renameat2() over bind mounts of the same filesystem Florian Margaine
2020-08-28 21:34 ` Al Viro [this message]
2020-08-29 21:23   ` Florian Margaine
2020-08-29 22:12     ` Matthew Wilcox
2020-08-29 22:42       ` Florian Margaine

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