[PATCH] zoned vm counters: conversion of nr_unstable to per zone counter

Conversion of nr_unstable to a per zone counter

We need to do some special modifications to the nfs code since there are
multiple cases of disposition and we need to have a page ref for proper
accounting.

This converts the last critical page state of the VM and therefore we need to
remove several functions that were depending on GET_PAGE_STATE_LAST in order
to make the kernel compile again.  We are only left with event type counters
in page state.

[akpm@osdl.org: bugfixes]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a12e894a8bca..6aa2c31f513b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1271,7 +1271,6 @@ void si_meminfo_node(struct sysinfo *val, int nid)
  */
 void show_free_areas(void)
 {
-        struct page_state ps;
         int cpu, temperature;
         unsigned long active;
         unsigned long inactive;
@@ -1303,7 +1302,6 @@ void show_free_areas(void)
                 }
         }
 
-        get_page_state(&ps);
         get_zone_counts(&active, &inactive, &free);
 
         printk("Free pages: %11ukB (%ukB HighMem)\n",
@@ -1316,7 +1314,7 @@ void show_free_areas(void)
                 inactive,
                 global_page_state(NR_FILE_DIRTY),
                 global_page_state(NR_WRITEBACK),
-                ps.nr_unstable,
+                global_page_state(NR_UNSTABLE_NFS),
                 nr_free_pages(),
                 global_page_state(NR_SLAB),
                 global_page_state(NR_FILE_MAPPED),