[PATCH] add page_state info to show_mem

This helps a lot when debugging out of memory stuff - useful especially to
see if all the memory is sucked into slab, etc.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/mm/pgtable.c

@@ -30,6 +30,7 @@ void show_mem(void)
 	struct page *page;
 	pg_data_t *pgdat;
 	unsigned long i;
+	struct page_state ps;
 
 	printk("Mem-info:\n");
 	show_free_areas();
@@ -53,6 +54,13 @@ void show_mem(void)
 	printk("%d reserved pages\n",reserved);
 	printk("%d pages shared\n",shared);
 	printk("%d pages swap cached\n",cached);
+
+	get_page_state(&ps);
+	printk("%lu pages dirty\n", ps.nr_dirty);
+	printk("%lu pages writeback\n", ps.nr_writeback);
+	printk("%lu pages mapped\n", ps.nr_mapped);
+	printk("%lu pages slab\n", ps.nr_slab);
+	printk("%lu pages pagetables\n", ps.nr_page_table_pages);
 }
 
 /*