mm: count reclaimable pages per BDI

[safe/jmp/linux-2.6] / fs / buffer.c

diff --git a/fs/buffer.c b/fs/buffer.c
index faceb5e..86e58b1 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -710,6 +710,8 @@ static int __set_page_dirty(struct page *page,
 
                if (mapping_cap_account_dirty(mapping)) {
                        __inc_zone_page_state(page, NR_FILE_DIRTY);
+                       __inc_bdi_stat(mapping->backing_dev_info,
+                                       BDI_RECLAIMABLE);
                        task_io_account_write(PAGE_CACHE_SIZE);
                }
                radix_tree_tag_set(&mapping->page_tree,