[PATCH] Drop __get_zone_counts()

Values are readily available via ZVC per node and global sums.
Signed-off-by: NChristoph Lameter <clameter@sgi.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/base/node.c

@@ -40,13 +40,8 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
 	int n;
 	int nid = dev->id;
 	struct sysinfo i;
-	unsigned long inactive;
-	unsigned long active;
-	unsigned long free;
 
 	si_meminfo_node(&i, nid);
-	__get_zone_counts(&active, &inactive, &free, NODE_DATA(nid));
-
 
 	n = sprintf(buf, "\n"
 		       "Node %d MemTotal:     %8lu kB\n"
@@ -74,8 +69,8 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
 		       nid, K(i.totalram),
 		       nid, K(i.freeram),
 		       nid, K(i.totalram - i.freeram),
-		       nid, K(active),
-		       nid, K(inactive),
+		       nid, node_page_state(nid, NR_ACTIVE),
+		       nid, node_page_state(nid, NR_INACTIVE),
 #ifdef CONFIG_HIGHMEM
 		       nid, K(i.totalhigh),
 		       nid, K(i.freehigh),

include/linux/mmzone.h

@@ -444,8 +444,6 @@ typedef struct pglist_data {
 
 #include <linux/memory_hotplug.h>
 
-void __get_zone_counts(unsigned long *active, unsigned long *inactive,
-			unsigned long *free, struct pglist_data *pgdat);
 void get_zone_counts(unsigned long *active, unsigned long *inactive,
 			unsigned long *free);
 void build_all_zonelists(void);

mm/readahead.c

@@ -575,10 +575,6 @@ void handle_ra_miss(struct address_space *mapping,
  */
 unsigned long max_sane_readahead(unsigned long nr)
 {
-	unsigned long active;
-	unsigned long inactive;
-	unsigned long free;
-
-	__get_zone_counts(&active, &inactive, &free, NODE_DATA(numa_node_id()));
-	return min(nr, (inactive + free) / 2);
+	return min(nr, (node_page_state(numa_node_id(), NR_INACTIVE)
+		+ node_page_state(numa_node_id(), NR_FREE_PAGES)) / 2);
 }

mm/vmstat.c

@@ -13,14 +13,6 @@
 #include <linux/module.h>
 #include <linux/cpu.h>
 
-void __get_zone_counts(unsigned long *active, unsigned long *inactive,
-			unsigned long *free, struct pglist_data *pgdat)
-{
-	*active = node_page_state(pgdat->node_id, NR_ACTIVE);
-	*inactive = node_page_state(pgdat->node_id, NR_INACTIVE);
-	*free = node_page_state(pgdat->node_id, NR_FREE_PAGES);
-}
-
 void get_zone_counts(unsigned long *active,
 		unsigned long *inactive, unsigned long *free)
 {