From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bodo Eggert <7eggert@gmx.de> Subject: Re: no way to swapoff a deleted swap file? Reply-To: 7eggert@gmx.de Date: Fri, 17 Oct 2008 10:20:22 +0200 References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit Message-Id: Sender: owner-linux-mm@kvack.org Return-Path: To: David Newall , Hugh Dickins , Peter Zijlstra , Peter Cordes , linux-kernel@vger.kernel.org, Christoph Hellwig , linux-mm List-ID: David Newall 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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org