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 PAA02308 for ; Mon, 25 Jan 1999 15:59:21 -0500 Date: Mon, 25 Jan 1999 12:56:21 -0800 (PST) From: Linus Torvalds Subject: Re: MM deadlock [was: Re: arca-vm-8...] In-Reply-To: <19990125214929.A28382@Galois.suse.de> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: "Dr. Werner Fink" Cc: Andrea Arcangeli , "Eric W. Biederman" , "Stephen C. Tweedie" , Rik van Riel , Zlatko Calusic , Savochkin Andrey Vladimirovich , steve@netplus.net, brent verner , "Garst R. Reese" , Kalle Andersson , Ben McCann , Alan Cox , bredelin@ucsd.edu, linux-kernel@vger.rutgers.edu, linux-mm@kvack.org List-ID: On Mon, 25 Jan 1999, Dr. Werner Fink wrote: > > This hypothetical bit should only be set if the page is read physical > from the swap device/file. That means it would take one step more > to swap out this page again (test_and_clear_bit of both > PG_recently_swapped_in and PG_referenced). Ehh - it is already marked "accessed" in the page tables, which essentially amounts to exactly that kind of two-level aging (the PG_referenced bit only takes effect once the swapped-in page has once more been evicted from the page tables) Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm my@address' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://humbolt.geo.uu.nl/Linux-MM/