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From: Benjamin Redelings I <bredelin@ucla.edu>
To: linux-mm@kvack.org
Subject: Re: pre2 swap_out() changes
Date: Thu, 11 Jan 2001 12:52:49 -0800	[thread overview]
Message-ID: <3A5E1D21.2DDB492C@ucla.edu> (raw)

Does this make sensee,specially, the last two lines?
	Maybe 2.4.1-pre3 will shed some light, but I see that Marcelo basically
reverted this in his patch this morning...

-	onlist = PageActive(page);
 	/* Don't look at this pte if it's been accessed recently. */
 	if (ptep_test_and_clear_young(page_table)) {
-		age_page_up(page);
-		goto out_failed;
+		page->age += PAGE_AGE_ADV;
+		if (page->age > PAGE_AGE_MAX)
+			page->age = PAGE_AGE_MAX;
+		return;
 	}
-	if (!onlist)
-		/* The page is still mapped, so it can't be freeable... */
-		age_page_down_ageonly(page);
-
-	/*
-	 * If the page is in active use by us, or if the page
-	 * is in active use by others, don't unmap it or
-	 * (worse) start unneeded IO.
-	 */
-	if (page->age > 0)
-		goto out_failed;

-BenRI
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             reply	other threads:[~2001-01-11 20:52 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-01-11 20:52 Benjamin Redelings I [this message]
  -- strict thread matches above, loose matches on Subject: below --
2001-01-11 10:38 Marcelo Tosatti
2001-01-11 18:49 ` Linus Torvalds
2001-01-12 11:35   ` Zlatko Calusic
2001-01-12 19:45     ` Linus Torvalds
2001-01-12 19:22       ` Marcelo Tosatti
2001-01-13  0:23         ` Linus Torvalds
2001-01-12 22:41           ` Marcelo Tosatti
2001-01-13  0:45             ` Linus Torvalds
2001-01-17  7:05             ` Rik van Riel
2001-01-18 11:54           ` Rik van Riel
2001-01-13 11:41         ` Zlatko Calusic
2001-01-17  7:08           ` Rik van Riel
2001-01-13 11:51       ` Zlatko Calusic
2001-01-14  2:39         ` Marcelo Tosatti
2001-01-14  4:36           ` Linus Torvalds
2001-01-14  3:50             ` Marcelo Tosatti
2001-01-14 15:51               ` Ed Tomlinson
2001-01-14 14:13                 ` Marcelo Tosatti
2001-01-14 16:15                   ` Zlatko Calusic
2001-01-14 17:22                     ` Zlatko Calusic
2001-01-17  7:16                       ` Rik van Riel
2001-01-17  7:15                 ` Rik van Riel
2001-01-17  7:12               ` Rik van Riel

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