[patch] 2.4.0-test4 filemap.c

[patch] 2.4.0-test4 filemap.c

[Rik van Riel]

Hi,

the patch below could make filemap.c better behaved.

this stuff is untested and since I don't really care
about tweaks to the old VM you shouldn't bother me
about it...

regards,

Rik
--
"What you're running that piece of shit Gnome?!?!"
       -- Miguel de Icaza, UKUUG 2000

http://www.conectiva.com/		http://www.surriel.com/



--- filemap.c.orig	Sat Jul 15 15:31:38 2000
+++ filemap.c	Sat Jul 15 15:33:26 2000
@@ -318,6 +318,14 @@
 			goto cache_unlock_continue;
 
 		/*
+		 * If we *really* have too much memory free in a zone,
+		 * we even won't drop the swap cache memory. We should
+		 * keep this limit high though, because that way balancing
+		 * between zones is faster.
+		 */
+		if (page->zone->free_pages > page->zone->pages_high * 2)
+			goto cache_unlock_continue;
+		/*
 		 * Is it a page swap page? If so, we want to
 		 * drop it if it is no longer used, even if it
 		 * were to be marked referenced..

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Re: [patch] 2.4.0-test4 filemap.c

[Arjan van de Ven]

On Sat, 15 Jul 2000, Rik van Riel wrote:

> Hi,
> 
> the patch below could make filemap.c better behaved.

My system with both your patches works REALLY great. No unneeded swapouts
if there is plenty of ram free (like 16Mb), no trimming of the cache until
there is only 2 Mb free, and only swapping the old stuff when I ask
Mozilla to start....

I hope these patches make it into the kernel, at least until the new VM is
ready...


Greetings,
   Arjan van de Ven


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