From c8e28ce049faa53a470c132893abbc9f2bde9420 Mon Sep 17 00:00:00 2001
From: Wu Fengguang <fengguang.wu@intel.com>
Date: Sun, 23 Jan 2011 10:07:47 -0600
Subject: writeback: account per-bdi accumulated dirtied pages

Introduce the BDI_DIRTIED counter. It will be used for estimating the
bdi's dirty bandwidth.

CC: Jan Kara <jack@suse.cz>
CC: Michael Rubin <mrubin@google.com>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 mm/page-writeback.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'mm/page-writeback.c')

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0e309cd1b5b9..0e6dd5c2ed31 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1322,6 +1322,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping)
 		__inc_zone_page_state(page, NR_FILE_DIRTY);
 		__inc_zone_page_state(page, NR_DIRTIED);
 		__inc_bdi_stat(mapping->backing_dev_info, BDI_RECLAIMABLE);
+		__inc_bdi_stat(mapping->backing_dev_info, BDI_DIRTIED);
 		task_dirty_inc(current);
 		task_io_account_write(PAGE_CACHE_SIZE);
 	}
-- 
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