io-wq: remove unused busy list from io_sqe

[linux-2.6-microblaze.git] / fs / io-wq.c

diff --git a/fs/io-wq.c b/fs/io-wq.c
index 90c4978..a1c8545 100644 (file)
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -92,7 +92,6 @@ struct io_wqe {
        struct io_wqe_acct acct[2];
 
        struct hlist_nulls_head free_list;
-       struct hlist_nulls_head busy_list;
        struct list_head all_list;
 
        struct io_wq *wq;
@@ -327,7 +326,6 @@ static void __io_worker_busy(struct io_wqe *wqe, struct io_worker *worker,
        if (worker->flags & IO_WORKER_F_FREE) {
                worker->flags &= ~IO_WORKER_F_FREE;
                hlist_nulls_del_init_rcu(&worker->nulls_node);
-               hlist_nulls_add_head_rcu(&worker->nulls_node, &wqe->busy_list);
        }
 
        /*
@@ -365,7 +363,6 @@ static bool __io_worker_idle(struct io_wqe *wqe, struct io_worker *worker)
 {
        if (!(worker->flags & IO_WORKER_F_FREE)) {
                worker->flags |= IO_WORKER_F_FREE;
-               hlist_nulls_del_init_rcu(&worker->nulls_node);
                hlist_nulls_add_head_rcu(&worker->nulls_node, &wqe->free_list);
        }
 
@@ -798,10 +795,6 @@ void io_wq_cancel_all(struct io_wq *wq)
 
        set_bit(IO_WQ_BIT_CANCEL, &wq->state);
 
-       /*
-        * Browse both lists, as there's a gap between handing work off
-        * to a worker and the worker putting itself on the busy_list
-        */
        rcu_read_lock();
        for_each_node(node) {
                struct io_wqe *wqe = wq->wqes[node];
@@ -948,7 +941,7 @@ static enum io_wq_cancel io_wqe_cancel_work(struct io_wqe *wqe,
        /*
         * Now check if a free (going busy) or busy worker has the work
         * currently running. If we find it there, we'll return CANCEL_RUNNING
-        * as an indication that we attempte to signal cancellation. The
+        * as an indication that we attempt to signal cancellation. The
         * completion will run normally in this case.
         */
        rcu_read_lock();
@@ -1049,7 +1042,6 @@ struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data)
                spin_lock_init(&wqe->lock);
                INIT_WQ_LIST(&wqe->work_list);
                INIT_HLIST_NULLS_HEAD(&wqe->free_list, 0);
-               INIT_HLIST_NULLS_HEAD(&wqe->busy_list, 1);
                INIT_LIST_HEAD(&wqe->all_list);
        }