writeback: fix the wrong congested state variable definition

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@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index a988d4e..7f80b1a 100644 (file)
--- 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))