block: Convert BDI proportion calculations to flexible proportions

Convert calculations of proportion of writeback each bdi does to new flexible
proportion code. That allows us to use aging period of fixed wallclock time
which gives better proportion estimates given the hugely varying throughput of
different devices.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index dd8e2aafb07e..3387aea11209 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -677,7 +677,7 @@ int bdi_init(struct backing_dev_info *bdi)
 
         bdi->min_ratio = 0;
         bdi->max_ratio = 100;
-        bdi->max_prop_frac = PROP_FRAC_BASE;
+        bdi->max_prop_frac = FPROP_FRAC_BASE;
         spin_lock_init(&bdi->wb_lock);
         INIT_LIST_HEAD(&bdi->bdi_list);
         INIT_LIST_HEAD(&bdi->work_list);
@@ -700,7 +700,7 @@ int bdi_init(struct backing_dev_info *bdi)
         bdi->write_bandwidth = INIT_BW;
         bdi->avg_write_bandwidth = INIT_BW;
 
-        err = prop_local_init_percpu(&bdi->completions);
+        err = fprop_local_init_percpu(&bdi->completions);
 
         if (err) {
 err:
@@ -744,7 +744,7 @@ void bdi_destroy(struct backing_dev_info *bdi)
         for (i = 0; i < NR_BDI_STAT_ITEMS; i++)
                 percpu_counter_destroy(&bdi->bdi_stat[i]);
 
-        prop_local_destroy_percpu(&bdi->completions);
+        fprop_local_destroy_percpu(&bdi->completions);
 }
 EXPORT_SYMBOL(bdi_destroy);