From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from neon.transmeta.com (neon-best.transmeta.com [206.184.214.10]) by kvack.org (8.8.7/8.8.7) with ESMTP id QAA23894 for ; Sun, 10 Jan 1999 16:50:23 -0500 Date: Sun, 10 Jan 1999 13:47:24 -0800 (PST) From: Linus Torvalds Subject: Re: MM deadlock [was: Re: arca-vm-8...] In-Reply-To: <199901102141.VAA01398@dax.scot.redhat.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: "Stephen C. Tweedie" Cc: Andrea Arcangeli , Savochkin Andrey Vladimirovich , steve@netplus.net, "Eric W. Biederman" , brent verner , "Garst R. Reese" , Kalle Andersson , Zlatko Calusic , Ben McCann , Alan Cox , bredelin@ucsd.edu, linux-kernel@vger.rutgers.edu, Rik van Riel , linux-mm@kvack.org List-ID: On Sun, 10 Jan 1999, Stephen C. Tweedie wrote: > > The problem with that is what happens if we have a large, active > write-mapped file with lots of IO activity on it; we become essentially > unable to swap that file out. That has really nasty VM death > implications for things like databases. Indeed. Maybe we really should use kswapd for this, especially now that kswapd doesn't really do much else.. Btw, pre-6 had a bug in kswapd that is relevant to this discussion - it used a 0 argument to try_to_free_pages(), even though kswapd very much is able to do IO. (So in pre-6, waking up kswapd is the wrong thing to try to do ;) Linus -- This is a majordomo managed list. To unsubscribe, send a message with the body 'unsubscribe linux-mm me@address' to: majordomo@kvack.org