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authorWu Fengguang <fengguang.wu@intel.com>2011-01-23 10:07:47 -0600
committerWu Fengguang <fengguang.wu@intel.com>2011-10-03 21:08:56 +0800
commitc8e28ce049faa53a470c132893abbc9f2bde9420 (patch)
tree40553e72f50a613c93f4175d1d28d06abc90db65 /mm/page-writeback.c
parent9b13776977d45505469edc6decc93e9e3799afe2 (diff)
downloadlwn-c8e28ce049faa53a470c132893abbc9f2bde9420.tar.gz
lwn-c8e28ce049faa53a470c132893abbc9f2bde9420.zip
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>
Diffstat (limited to 'mm/page-writeback.c')
-rw-r--r--mm/page-writeback.c1
1 files changed, 1 insertions, 0 deletions
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);
}