IA64 zone reclaim
Set up a zone reclaim function for IA64. The zone reclaim function will
reclaim easily reclaimable pages. Off node allocations will occur if no
easily reclaimable pages exist anymore.
Signed-off-by: Christoph Lameter <[email protected]>
Index: linux-2.6.15-rc4/arch/ia64/mm/numa.c
===================================================================
--- linux-2.6.15-rc4.orig/arch/ia64/mm/numa.c 2005-11-30 22:25:15.000000000 -0800
+++ linux-2.6.15-rc4/arch/ia64/mm/numa.c 2005-12-05 10:12:14.000000000 -0800
@@ -17,6 +17,7 @@
#include <linux/node.h>
#include <linux/init.h>
#include <linux/bootmem.h>
+#include <linux/swap.h>
#include <asm/mmzone.h>
#include <asm/numa.h>
@@ -71,3 +72,17 @@ int early_pfn_to_nid(unsigned long pfn)
return 0;
}
#endif
+
+/*
+ * Remove easily reclaimable local pages if watermarks would prevent a
+ * local allocation.
+ */
+int arch_zone_reclaim(struct zone *z, gfp_t mask,
+ unsigned int order)
+{
+ if (z->zone_pgdat->node_id == numa_node_id()) {
+ if (zone_reclaim(z, mask, 0, 0) > (1 << order))
+ return 1;
+ }
+ return 0;
+}
Index: linux-2.6.15-rc4/arch/ia64/Kconfig
===================================================================
--- linux-2.6.15-rc4.orig/arch/ia64/Kconfig 2005-11-30 22:25:15.000000000 -0800
+++ linux-2.6.15-rc4/arch/ia64/Kconfig 2005-12-03 13:30:27.000000000 -0800
@@ -338,6 +338,10 @@ config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool y
depends on NEED_MULTIPLE_NODES
+config ARCH_ZONE_RECLAIM
+ def_bool y
+ depends on NUMA
+
config IA32_SUPPORT
bool "Support for Linux/x86 binaries"
help
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