[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, 1 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 3cfdff4b1985..de9836f43db5 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -110,7 +110,7 @@ struct writeback_state
 static void get_writeback_state(struct writeback_state *wbs)
 {
         wbs->nr_dirty = global_page_state(NR_FILE_DIRTY);
-        wbs->nr_unstable = read_page_state(nr_unstable);
+        wbs->nr_unstable = global_page_state(NR_UNSTABLE_NFS);
         wbs->nr_mapped = global_page_state(NR_FILE_MAPPED) +
                                 global_page_state(NR_ANON_PAGES);
         wbs->nr_writeback = global_page_state(NR_WRITEBACK);