linux-kernel - [PATCH] writeback: remove unused parameter from balance_dirty

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Date:   Wed, 27 Sep 2017 15:13:11 -0700
From:   Tahsin Erdogan <tahsin@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>, Jan Kara <jack@...e.cz>,
        Johannes Weiner <hannes@...xchg.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Michal Hocko <mhocko@...e.com>,
        Jeff Layton <jlayton@...hat.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Theodore Ts'o <tytso@....edu>,
        Nikolay Borisov <nborisov@...e.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Tahsin Erdogan <tahsin@...gle.com>
Subject: [PATCH] writeback: remove unused parameter from balance_dirty_pages()

"mapping" parameter to balance_dirty_pages() is not used anymore.

Fixes: dfb8ae567835 ("writeback: let balance_dirty_pages() work on the matching cgroup bdi_writeback")

Signed-off-by: Tahsin Erdogan <tahsin@...gle.com>
---
 mm/page-writeback.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0b9c5cbe8eba..d89663f00e93 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1559,8 +1559,7 @@ static inline void wb_dirty_limits(struct dirty_throttle_control *dtc)
  * 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,
-				struct bdi_writeback *wb,
+static void balance_dirty_pages(struct bdi_writeback *wb,
 				unsigned long pages_dirtied)
 {
 	struct dirty_throttle_control gdtc_stor = { GDTC_INIT(wb) };
@@ -1910,7 +1909,7 @@ void balance_dirty_pages_ratelimited(struct address_space *mapping)
 	preempt_enable();
 
 	if (unlikely(current->nr_dirtied >= ratelimit))
-		balance_dirty_pages(mapping, wb, current->nr_dirtied);
+		balance_dirty_pages(wb, current->nr_dirtied);
 
 	wb_put(wb);
 }
-- 
2.14.2.822.g60be5d43e6-goog