Merge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-block.git] / mm / page-writeback.c

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 650846b615841c14f092bdae6aa58acb276aae88..9c31199dae9a4a29c84651c7c2fe59929eeb99dc 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -251,7 +251,9 @@ static void bdi_writeout_fraction(struct backing_dev_info *bdi,
 }
 
 /*
- *
+ * 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;