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authorJan Kara <jack@suse.cz>2010-12-08 22:44:24 -0600
committerWu Fengguang <fengguang.wu@intel.com>2011-07-09 22:09:01 -0700
commitf7d2b1ecd0c714adefc7d3a942ef87beb828a763 (patch)
tree7c5adb0abd73d3ad449b94698dadbaceb573a6f4 /mm/page-writeback.c
parentd46db3d58233be4be980eb1e42eebe7808bcabab (diff)
downloadop-kernel-dev-f7d2b1ecd0c714adefc7d3a942ef87beb828a763.zip
op-kernel-dev-f7d2b1ecd0c714adefc7d3a942ef87beb828a763.tar.gz
writeback: account per-bdi accumulated written pages
Introduce the BDI_WRITTEN counter. It will be used for estimating the bdi's write bandwidth. Peter Zijlstra <a.p.zijlstra@chello.nl>: Move BDI_WRITTEN accounting into __bdi_writeout_inc(). This will cover and fix fuse, which only calls bdi_writeout_inc(). CC: Michael Rubin <mrubin@google.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Jan Kara <jack@suse.cz> 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 9d6ac2b..8cd7137 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -219,6 +219,7 @@ int dirty_bytes_handler(struct ctl_table *table, int write,
*/
static inline void __bdi_writeout_inc(struct backing_dev_info *bdi)
{
+ __inc_bdi_stat(bdi, BDI_WRITTEN);
__prop_inc_percpu_max(&vm_completions, &bdi->completions,
bdi->max_prop_frac);
}
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