mm/page-writeback.c: document bdi_min_ratio

Looks like someone got distracted after adding the comment characters.

Signed-off-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <>

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index da6d263a8c8c26dd7fe453d81494e4df7a6e9ac2..4ee5d6a32e59c9c653543325ba9acd423631eea0 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -364,7 +364,9 @@ static unsigned long task_min_dirty_limit(unsigned long bdi_dirty)
 }
 
 /*
- *
+ * bdi_min_ratio keeps the sum of the minimum dirty shares of all
+ * registered backing devices, which, for obvious reasons, can not
+ * exceed 100%.
  */
 static unsigned int bdi_min_ratio;