From: Larry Woodman <lwoodman@redhat.com>
Subject: [RHEL5 patch] separate mapped file and mapped anonymous pages in 	show_mem() output.
Date: Mon, 30 Jul 2007 16:50:51 -0400
Bugzilla: 252033
Message-Id: <46AE4F2B.1010003@redhat.com>
Changelog: [mm] separate mapped file and anonymous pages in show_mem() output.


The attached patch separates the "mapped" pages count into "mapped-file" 
and "mapped-anon"
page counts in the show_mem()  output.  Without this change it is 
difficult to debug memory
consumption problems with AltSysrq-M outputs:

Active:2719956 inactive:27752 dirty:36 writeback:73 unstable:0 free:20360 
slab:165960 mapped:176196 pagetables:929638

Active:2719956 inactive:27752 dirty:36 writeback:73 unstable:0 free:20360 
slab:165960 mapped-file:57234 mapped-file:118962 pagetables:929638






--- linux-2.6.18.noarch/mm/page_alloc.c.orig
+++ linux-2.6.18.noarch/mm/page_alloc.c
@@ -1289,7 +1289,7 @@ void show_free_areas(void)
 		K(nr_free_highpages()));
 
 	printk("Active:%lu inactive:%lu dirty:%lu writeback:%lu "
-		"unstable:%lu free:%u slab:%lu mapped:%lu pagetables:%lu\n",
+		"unstable:%lu free:%u slab:%lu mapped-file:%lu mapped-anon:%lu pagetables:%lu\n",
 		active,
 		inactive,
 		global_page_state(NR_FILE_DIRTY),
@@ -1298,6 +1298,7 @@ void show_free_areas(void)
 		nr_free_pages(),
 		global_page_state(NR_SLAB),
 		global_page_state(NR_FILE_MAPPED),
+		global_page_state(NR_ANON_PAGES),
 		global_page_state(NR_PAGETABLE));
 
 	for_each_zone(zone) {