From: Rik van Riel <riel@nl.linux.org>
To: Kanoj Sarcar <kanoj@google.engr.sgi.com>
Cc: linux-mm@kvack.org, sct@redhat.com
Subject: Re: filecache/swapcache questions
Date: Tue, 15 Jun 1999 22:24:38 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.03.9906152223590.534-100000@mirkwood.nl.linux.org> (raw)
In-Reply-To: <199906151551.IAA74604@google.engr.sgi.com>
On Tue, 15 Jun 1999, Kanoj Sarcar wrote:
> I still can't see how this can happen. Note that try_to_swap_out
> either does a get_swap_page/swap_duplicate on the swaphandle,
> which gets the swap_count up to 2, or if it sees a page already in
> the swapcache, it just does a swap_duplicate. Either way, if the
> only reference on the physical page is from the swapcache, there
> will be at least one more reference on the swap page other than
> due to the swapcache. What am I missing?
When the swap I/O (if needed) finishes, the page count is
decreased by one.
Rik -- Open Source: you deserve to be in control of your data.
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next prev parent reply other threads:[~1999-06-15 20:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-06-15 7:16 Kanoj Sarcar
1999-06-15 7:32 ` Rik van Riel
1999-06-15 15:51 ` Kanoj Sarcar
1999-06-15 20:24 ` Rik van Riel [this message]
1999-06-15 21:02 ` Kanoj Sarcar
1999-06-16 20:37 ` Andrea Arcangeli
1999-06-17 23:33 ` Stephen C. Tweedie
1999-06-18 0:20 ` Kanoj Sarcar
1999-06-18 17:00 ` Stephen C. Tweedie
1999-06-18 17:03 ` Kanoj Sarcar
1999-06-21 5:29 Kanoj Sarcar
1999-06-21 11:25 ` Stephen C. Tweedie
1999-06-21 16:46 ` Kanoj Sarcar
1999-06-21 16:57 ` Stephen C. Tweedie
1999-06-21 17:36 ` Kanoj Sarcar
1999-06-21 17:49 ` Stephen C. Tweedie
1999-06-21 18:46 ` Kanoj Sarcar
1999-06-21 23:44 ` Kanoj Sarcar
1999-06-24 22:23 ` Andrea Arcangeli
1999-06-24 23:55 ` Kanoj Sarcar
1999-06-25 0:26 ` Andrea Arcangeli
1999-06-28 22:36 ` Stephen C. Tweedie
1999-06-28 23:24 ` Kanoj Sarcar
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