writeback: avoid unnecessary calculation of bdi dirty thresholds

[mirror_ubuntu-zesty-kernel.git] / mm / backing-dev.c

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 08d357522e784c602205a988687eddbeb0f72c10..eaa4a5bbe0634390fc802ebffdbad4291fa3b991 100644 (file)
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -81,7 +81,8 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
                nr_more_io++;
        spin_unlock(&inode_lock);
 
-       get_dirty_limits(&background_thresh, &dirty_thresh, &bdi_thresh, bdi);
+       global_dirty_limits(&background_thresh, &dirty_thresh);
+       bdi_thresh = bdi_dirty_limit(bdi, dirty_thresh);
 
 #define K(x) ((x) << (PAGE_SHIFT - 10))
        seq_printf(m,