From: Bodo Eggert <7eggert@gmx.de>
To: David Newall <davidn@davidnewall.com>,
Hugh Dickins <hugh@veritas.com>,
Peter Zijlstra <peterz@infradead.org>,
Peter Cordes <peter@cordes.ca>,
linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
linux-mm <linux-mm@kvack.org>
Subject: Re: no way to swapoff a deleted swap file?
Date: Fri, 17 Oct 2008 10:20:22 +0200 [thread overview]
Message-ID: <E1KqkZK-0001HO-WF@be1.7eggert.dyndns.org> (raw)
In-Reply-To: bnR0A-4kq-1@gated-at.bofh.it
David Newall <davidn@davidnewall.com> wrote:
> Hugh Dickins wrote:
>> On Thu, 16 Oct 2008, Peter Zijlstra wrote:
>>> On Wed, 2008-10-15 at 17:21 -0300, Peter Cordes wrote:
>>>
>>>> I unlinked a swapfile without realizing I was still swapping on it.
[...]
> Me too. The kernel shouldn't protect the administrator against all
> possible mistakes; and this mistake is one of them. Besides, who's to
> say it's always a mistake? Somebody might want their swap file to have
> zero links.
Somebody might want their swapfiles to have zero links, _and_ the possibility
of doing swapoff. If you can do it by keeping some fds open to let
/proc/pid/fd point to the files, I think it's OK.
next prev parent reply other threads:[~2008-10-17 8:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bnlDw-5vQ-7@gated-at.bofh.it>
[not found] ` <bnwpg-2EA-17@gated-at.bofh.it>
[not found] ` <bnJFK-3bu-7@gated-at.bofh.it>
2008-10-16 23:43 ` no way to swapoff a deleted swap file? Bodo Eggert
[not found] ` <bnR0A-4kq-1@gated-at.bofh.it>
2008-10-17 8:20 ` Bodo Eggert [this message]
2008-10-17 12:17 ` Hugh Dickins
2008-10-17 12:36 ` David Newall
2008-10-17 22:42 ` Bodo Eggert
2008-10-18 0:31 ` Peter Cordes
2008-10-18 5:18 ` Willy Tarreau
2008-10-18 20:45 ` Hugh Dickins
2008-10-18 20:49 ` Christoph Hellwig
2008-10-18 20:56 ` Willy Tarreau
2008-11-14 2:37 ` [PATCH 2.6.28?] don't unlink an active swapfile Hugh Dickins
2008-11-14 4:08 ` Peter Cordes
2008-11-14 17:34 ` Christoph Hellwig
2008-11-14 18:02 ` Hugh Dickins
2008-10-15 20:21 no way to swapoff a deleted swap file? Peter Cordes
2008-10-16 8:28 ` Peter Zijlstra
2008-10-16 22:38 ` Hugh Dickins
2008-10-17 6:28 ` David Newall
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