From: Andrea Arcangeli <andrea@suse.de>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Hugh Dickins <hugh@veritas.com>,
Frank Dekervel <Frank.dekervel@student.kuleuven.ac.Be>,
Marcelo Tosatti <marcelo@conectiva.com.br>,
linux-kernel@vger.kernel.org
Subject: Re: need help interpreting 'free' output.
Date: Tue, 30 Oct 2001 18:39:12 +0100 [thread overview]
Message-ID: <20011030183912.P1340@athlon.random> (raw)
In-Reply-To: <20011030180616.M1340@athlon.random> <Pine.LNX.4.33.0110300917520.8603-100000@penguin.transmeta.com>
In-Reply-To: <Pine.LNX.4.33.0110300917520.8603-100000@penguin.transmeta.com>; from torvalds@transmeta.com on Tue, Oct 30, 2001 at 09:28:29AM -0800
On Tue, Oct 30, 2001 at 09:28:29AM -0800, Linus Torvalds wrote:
> Does anybody see why we have to remove it from the swap cache at all?
the only reason is to avoid wasting the swap space, so at least Rik's
vm_swap_full logic should be added to it. The only advantage of dirty
swap cache persistence is that it will maintain the same position on
disk across a swapin/swapout cycle.
But anyways you can do that "swap persistence" work in do_swap_page too
to save a page fault for the write swapins. Ok, it's in one more place
but it will be less costly than running into another pagefault just
after returning to userspace.
Andrea
next prev parent reply other threads:[~2001-10-30 17:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-30 11:32 need help interpreting 'free' output Frank Dekervel
2001-10-30 11:46 ` Mike Fedyk
2001-10-30 14:02 ` Frank Dekervel
2001-10-30 16:07 ` Hugh Dickins
2001-10-30 16:51 ` Andrea Arcangeli
2001-10-30 16:52 ` Linus Torvalds
2001-10-30 17:06 ` Andrea Arcangeli
2001-10-30 17:28 ` Linus Torvalds
2001-10-30 17:39 ` Andrea Arcangeli [this message]
2001-10-30 17:53 ` Linus Torvalds
2001-10-30 18:16 ` Andrea Arcangeli
2001-10-30 18:28 ` Linus Torvalds
2001-10-30 18:58 ` Andrea Arcangeli
2001-10-30 19:21 ` Linus Torvalds
2001-10-30 20:05 ` Andrea Arcangeli
2001-10-30 20:25 ` Linus Torvalds
2001-10-30 18:05 ` Eric W. Biederman
2001-10-30 20:47 ` David S. Miller
2001-10-30 18:11 ` Frank Dekervel
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