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-rw-r--r--include/linux/mmzone.h6
-rw-r--r--include/linux/swap.h1
2 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 3ac040f1936..ca6ca92418a 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -317,6 +317,12 @@ struct zone {
*/
unsigned long lowmem_reserve[MAX_NR_ZONES];
+ /*
+ * This is a per-zone reserve of pages that should not be
+ * considered dirtyable memory.
+ */
+ unsigned long dirty_balance_reserve;
+
#ifdef CONFIG_NUMA
int node;
/*
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 1e22e126d2a..06061a7f8e6 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -207,6 +207,7 @@ struct swap_list_t {
/* linux/mm/page_alloc.c */
extern unsigned long totalram_pages;
extern unsigned long totalreserve_pages;
+extern unsigned long dirty_balance_reserve;
extern unsigned int nr_free_buffer_pages(void);
extern unsigned int nr_free_pagecache_pages(void);