[PATCH] unmapped quotes

[liwp.linux@gmail.com]

From: Wanpeng Li <liwp.linux@gmail.com>

Signed-off-by: Wanpeng Li <liwp@linux.vnet.ibm.com>
---
 mm/page-writeback.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 26adea8..2b317a3 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1155,7 +1155,7 @@ static long bdi_min_pause(struct backing_dev_info *bdi,
  * balance_dirty_pages() must be called by processes which are generating dirty
  * data.  It looks at the number of dirty pages in the machine and will force
  * the caller to wait once crossing the (background_thresh + dirty_thresh) / 2.
- * If we're over `background_thresh' then the writeback threads are woken to
+ * If we're over 'background_thresh' then the writeback threads are woken to
  * perform some writeout.
  */
 static void balance_dirty_pages(struct address_space *mapping,
-- 
1.7.9.5