[PATCH] mm/page-writeback.c: fix comments error in page-writeback.c

[Wanpeng Li]

From: Wanpeng Li <liwp@xxxxxxxxxxxxxxxxxx>

Signed-off-by: Wanpeng Li <liwp@xxxxxxxxxxxxxxxxxx>
---
 mm/page-writeback.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 93d8d2f..c833bf0 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -930,7 +930,7 @@ static void bdi_update_dirty_ratelimit(struct backing_dev_info *bdi,
 	 */
 
 	/*
-	 * dirty_ratelimit will follow balanced_dirty_ratelimit iff
+	 * dirty_ratelimit will follow balanced_dirty_ratelimit if
 	 * task_ratelimit is on the same side of dirty_ratelimit, too.
 	 * For example, when
 	 * - dirty_ratelimit > balanced_dirty_ratelimit
@@ -941,7 +941,7 @@ static void bdi_update_dirty_ratelimit(struct backing_dev_info *bdi,
 	 * feel and care are stable dirty rate and small position error.
 	 *
 	 * |task_ratelimit - dirty_ratelimit| is used to limit the step size
-	 * and filter out the sigular points of balanced_dirty_ratelimit. Which
+	 * and filter out the singular points of balanced_dirty_ratelimit. Which
 	 * keeps jumping around randomly and can even leap far away at times
 	 * due to the small 200ms estimation period of dirty_rate (we want to
 	 * keep that period small to reduce time lags).
-- 
1.7.9.5

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