writeback: fix the wrong congested state variable definition

Kaixu Xia · axboe · commit c877ef8ae7b8 · 2016-03-31T12:26:25.000-06:00
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 &lt;xiakaixu@huawei.com&gt;
Acked-by: Tejun Heo &lt;tj@kernel.org&gt;
Signed-off-by: Jens Axboe &lt;axboe@fb.com&gt;
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
@@ -898,7 +898,7 @@ 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))
@@ -911,7 +911,7 @@ 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))

Original file line number	Diff line number	Diff line change
`@@ -898,7 +898,7 @@ static atomic_t nr_wb_congested[2];`
`898`	`898`	`void clear_wb_congested(struct bdi_writeback_congested *congested, int sync)`
`899`	`899`	`{`
`900`	`900`	`wait_queue_head_t *wqh = &congestion_wqh[sync];`
`901`		`- enum wb_state bit;`
	`901`	`+ enum wb_congested_state bit;`
`902`	`902`
`903`	`903`	`bit = sync ? WB_sync_congested : WB_async_congested;`
`904`	`904`	`if (test_and_clear_bit(bit, &congested->state))`
`@@ -911,7 +911,7 @@ EXPORT_SYMBOL(clear_wb_congested);`
`911`	`911`
`912`	`912`	`void set_wb_congested(struct bdi_writeback_congested *congested, int sync)`
`913`	`913`	`{`
`914`		`- enum wb_state bit;`
	`914`	`+ enum wb_congested_state bit;`
`915`	`915`
`916`	`916`	`bit = sync ? WB_sync_congested : WB_async_congested;`
`917`	`917`	`if (!test_and_set_bit(bit, &congested->state))`