io_uring: rename 'in_idle' to 'in_cancel'

This better describes what it does - it's incremented when the task is
currently undergoing a cancelation operation, due to exiting or exec'ing.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h
index 0efe4d7..00689c1 100644 (file)
--- a/include/linux/io_uring_types.h
+++ b/include/linux/io_uring_types.h
@@ -58,7 +58,7 @@ struct io_uring_task {
 
        struct xarray                   xa;
        struct wait_queue_head          wait;
-       atomic_t                        in_idle;
+       atomic_t                        in_cancel;
        atomic_t                        inflight_tracked;
        struct percpu_counter           inflight;
 

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index cbe06de..64e07df 100644 (file)
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -719,7 +719,7 @@ static void io_put_task_remote(struct task_struct *task, int nr)
        struct io_uring_task *tctx = task->io_uring;
 
        percpu_counter_sub(&tctx->inflight, nr);
-       if (unlikely(atomic_read(&tctx->in_idle)))
+       if (unlikely(atomic_read(&tctx->in_cancel)))
                wake_up(&tctx->wait);
        put_task_struct_many(task, nr);
 }
@@ -1258,8 +1258,8 @@ void tctx_task_work(struct callback_head *cb)
 
        ctx_flush_and_put(ctx, &uring_locked);
 
-       /* relaxed read is enough as only the task itself sets ->in_idle */
-       if (unlikely(atomic_read(&tctx->in_idle)))
+       /* relaxed read is enough as only the task itself sets ->in_cancel */
+       if (unlikely(atomic_read(&tctx->in_cancel)))
                io_uring_drop_tctx_refs(current);
 
        trace_io_uring_task_work_run(tctx, count, loops);
@@ -1291,7 +1291,7 @@ static void io_req_local_work_add(struct io_kiocb *req)
        /* needed for the following wake up */
        smp_mb__after_atomic();
 
-       if (unlikely(atomic_read(&req->task->io_uring->in_idle))) {
+       if (unlikely(atomic_read(&req->task->io_uring->in_cancel))) {
                io_move_task_work_from_local(ctx);
                goto put_ref;
        }
@@ -2937,12 +2937,12 @@ static __cold void io_tctx_exit_cb(struct callback_head *cb)
 
        work = container_of(cb, struct io_tctx_exit, task_work);
        /*
-        * When @in_idle, we're in cancellation and it's racy to remove the
+        * When @in_cancel, we're in cancellation and it's racy to remove the
         * node. It'll be removed by the end of cancellation, just ignore it.
         * tctx can be NULL if the queueing of this task_work raced with
         * work cancelation off the exec path.
         */
-       if (tctx && !atomic_read(&tctx->in_idle))
+       if (tctx && !atomic_read(&tctx->in_cancel))
                io_uring_del_tctx_node((unsigned long)work->ctx);
        complete(&work->completion);
 }
@@ -3210,7 +3210,7 @@ __cold void io_uring_cancel_generic(bool cancel_all, struct io_sq_data *sqd)
        if (tctx->io_wq)
                io_wq_exit_start(tctx->io_wq);
 
-       atomic_inc(&tctx->in_idle);
+       atomic_inc(&tctx->in_cancel);
        do {
                bool loop = false;
 
@@ -3261,9 +3261,9 @@ __cold void io_uring_cancel_generic(bool cancel_all, struct io_sq_data *sqd)
        if (cancel_all) {
                /*
                 * We shouldn't run task_works after cancel, so just leave
-                * ->in_idle set for normal exit.
+                * ->in_cancel set for normal exit.
                 */
-               atomic_dec(&tctx->in_idle);
+               atomic_dec(&tctx->in_cancel);
                /* for exec all current's requests should be gone, kill tctx */
                __io_uring_free(current);
        }

diff --git a/io_uring/tctx.c b/io_uring/tctx.c
index 4324b1c..3a8d1dd 100644 (file)
--- a/io_uring/tctx.c
+++ b/io_uring/tctx.c
@@ -83,7 +83,7 @@ __cold int io_uring_alloc_task_context(struct task_struct *task,
 
        xa_init(&tctx->xa);
        init_waitqueue_head(&tctx->wait);
-       atomic_set(&tctx->in_idle, 0);
+       atomic_set(&tctx->in_cancel, 0);
        atomic_set(&tctx->inflight_tracked, 0);
        task->io_uring = tctx;
        init_llist_head(&tctx->task_list);