This is a note to let you know that I've just added the patch titled

writeback: fix the wrong congested state variable definition

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: writeback-fix-the-wrong-congested-state-variable-definition.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From c877ef8ae7b8edaedccad0fc8c23d4d1de7e2480 Mon Sep 17 00:00:00 2001

From: Kaixu Xia xiakaixu@huawei.com Date: Thu, 31 Mar 2016 13:19:41 +0000 Subject: writeback: fix the wrong congested state variable definition

From: Kaixu Xia xiakaixu@huawei.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@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

--- 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))

Patches currently in stable-queue which might be from xiakaixu@huawei.com are

queue-4.4/writeback-fix-the-wrong-congested-state-variable-definition.patch