[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, 0 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 885cc9727001..e9d80697f555 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -55,6 +55,7 @@ enum zone_stat_item {
         NR_PAGETABLE,   /* used for pagetables */
         NR_FILE_DIRTY,
         NR_WRITEBACK,
+        NR_UNSTABLE_NFS,        /* NFS unstable pages */
         NR_VM_ZONE_STAT_ITEMS };
 
 struct per_cpu_pages {