V2 -> V3:
+ rebase to 23-mm1 atop RvR's split lru series
+ fix definitions of NR_MLOCK to fix build errors when not configured.
V1 -> V2:
+ new in V2 -- pulled in & reworked from Nick's previous series
From: Nick Piggin <npiggin@suse.de>
To: Linux Memory Management <linux-mm@kvack.org>
Cc: Nick Piggin <npiggin@suse.de>, Andrew Morton <akpm@osdl.org>
Subject: [patch 4/4] mm: account mlocked pages
Date: Mon, 12 Mar 2007 07:39:14 +0100 (CET)
Add NR_MLOCK zone page state, which provides a (conservative) count of
mlocked pages (actually, the number of mlocked pages moved off the LRU).
Reworked by lts to fit in with the modified mlock page support in the
Reclaim Scalability series. I don't know whether we'll want to keep
these stats in the long run, but during testing of this series, I find
them useful.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Rik van Riel <riel@redhat.com>
Index: linux-2.6.25-rc2-mm1/drivers/base/node.c
===================================================================
--- linux-2.6.25-rc2-mm1.orig/drivers/base/node.c 2008-02-28 12:48:01.000000000 -0500
+++ linux-2.6.25-rc2-mm1/drivers/base/node.c 2008-02-28 12:49:19.000000000 -0500
@@ -55,6 +55,9 @@ static ssize_t node_read_meminfo(struct
"Node %d Inactive(file): %8lu kB\n"
#ifdef CONFIG_NORECLAIM
"Node %d Noreclaim: %8lu kB\n"
+#ifdef CONFIG_NORECLAIM_MLOCK
+ "Node %d Mlocked: %8lu kB\n"
+#endif
#endif
#ifdef CONFIG_HIGHMEM
"Node %d HighTotal: %8lu kB\n"
@@ -82,6 +85,9 @@ static ssize_t node_read_meminfo(struct
nid, node_page_state(nid, NR_INACTIVE_FILE),
#ifdef CONFIG_NORECLAIM
nid, node_page_state(nid, NR_NORECLAIM),
+#ifdef CONFIG_NORECLAIM_MLOCK
+ nid, K(node_page_state(nid, NR_MLOCK)),
+#endif
#endif
#ifdef CONFIG_HIGHMEM
nid, K(i.totalhigh),
Index: lin...
