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-rw-r--r--mm/page-writeback.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index c081bf62202b..9ab6de82d8e6 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -157,7 +157,7 @@ static unsigned long highmem_dirtyable_memory(unsigned long total)
&NODE_DATA(node)->node_zones[ZONE_HIGHMEM];
x += zone_page_state(z, NR_FREE_PAGES) +
- zone_reclaimable_pages(z);
+ zone_reclaimable_pages(z) - z->dirty_balance_reserve;
}
/*
* Make sure that the number of highmem pages is never larger
@@ -181,7 +181,8 @@ static unsigned long determine_dirtyable_memory(void)
{
unsigned long x;
- x = global_page_state(NR_FREE_PAGES) + global_reclaimable_pages();
+ x = global_page_state(NR_FREE_PAGES) + global_reclaimable_pages() -
+ dirty_balance_reserve;
if (!vm_highmem_is_dirtyable)
x -= highmem_dirtyable_memory(x);