linux-kernel - [PATCH 4.4 13/72] writeback: fix the wrong congested state variable definition

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Message-Id: <20180406084306.160058817@linuxfoundation.org>
Date:   Fri,  6 Apr 2018 15:23:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Kaixu Xia <xiakaixu@...wei.com>,
        Tejun Heo <tj@...nel.org>, Jens Axboe <axboe@...com>,
        Nathan Chancellor <natechancellor@...il.com>
Subject: [PATCH 4.4 13/72] writeback: fix the wrong congested state variable definition

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kaixu Xia <xiakaixu@...wei.com>

commit c877ef8ae7b8edaedccad0fc8c23d4d1de7e2480 upstream.

The right variable definition should be wb_congested_state that
include WB_async_congested and WB_sync_congested. So fix it.

Signed-off-by: Kaixu Xia <xiakaixu@...wei.com>
Acked-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Jens Axboe <axboe@...com>
Cc: Nathan Chancellor <natechancellor@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 mm/backing-dev.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -922,7 +922,7 @@ static atomic_t nr_wb_congested[2];
 void clear_wb_congested(struct bdi_writeback_congested *congested, int sync)
 {
 	wait_queue_head_t *wqh = &congestion_wqh[sync];
-	enum wb_state bit;
+	enum wb_congested_state bit;
 
 	bit = sync ? WB_sync_congested : WB_async_congested;
 	if (test_and_clear_bit(bit, &congested->state))
@@ -935,7 +935,7 @@ EXPORT_SYMBOL(clear_wb_congested);
 
 void set_wb_congested(struct bdi_writeback_congested *congested, int sync)
 {
-	enum wb_state bit;
+	enum wb_congested_state bit;
 
 	bit = sync ? WB_sync_congested : WB_async_congested;
 	if (!test_and_set_bit(bit, &congested->state))