netdev - [PATCH] use total_highpages when calculating lowmem-only allocation sizes (decnet)

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Date:	Mon, 06 Dec 2010 16:43:04 +0000
From:	"Jan Beulich" <JBeulich@...ell.com>
To:	<netdev@...r.kernel.org>
Cc:	<akpm@...ux-foundation.org>
Subject: [PATCH] use total_highpages when calculating lowmem-only
	 allocation sizes (decnet)

For those (large) table allocations that come only from lowmem, the
total amount of memory shouldn't really matter.

Signed-off-by: Jan Beulich <jbeulich@...ell.com>

---
 net/decnet/dn_route.c             |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-2.6.37-rc4/net/decnet/dn_route.c
+++ 2.6.37-rc4-use-totalhigh_pages/net/decnet/dn_route.c
@@ -69,6 +69,7 @@
 #include <linux/slab.h>
 #include <net/sock.h>
 #include <linux/mm.h>
+#include <linux/highmem.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/init.h>
@@ -1762,7 +1763,7 @@ void __init dn_route_init(void)
 	dn_route_timer.expires = jiffies + decnet_dst_gc_interval * HZ;
 	add_timer(&dn_route_timer);
 
-	goal = totalram_pages >> (26 - PAGE_SHIFT);
+	goal = (totalram_pages - totalhigh_pages) >> (26 - PAGE_SHIFT);
 
 	for(order = 0; (1UL << order) < goal; order++)
 		/* NOTHING */;



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