[PATCH v4 1/3] io_uring: only call io_should_terminate_tw() once for ctx

[Caleb Sander Mateos]

io_fallback_req_func() calls io_should_terminate_tw() on each req's ctx.
But since the reqs all come from the ctx's fallback_llist, req->ctx will
be ctx for all of the reqs. Therefore, compute ts.cancel as
io_should_terminate_tw(ctx) just once, outside the loop.

Signed-off-by: Caleb Sander Mateos <csander at purestorage.com>
---
 io_uring/io_uring.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 93a1cc2bf383..4e6676ac4662 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -287,14 +287,13 @@ static __cold void io_fallback_req_func(struct work_struct *work)
 	struct io_kiocb *req, *tmp;
 	struct io_tw_state ts = {};
 
 	percpu_ref_get(&ctx->refs);
 	mutex_lock(&ctx->uring_lock);
-	llist_for_each_entry_safe(req, tmp, node, io_task_work.node) {
-		ts.cancel = io_should_terminate_tw(req->ctx);
+	ts.cancel = io_should_terminate_tw(ctx);
+	llist_for_each_entry_safe(req, tmp, node, io_task_work.node)
 		req->io_task_work.func(req, ts);
-	}
 	io_submit_flush_completions(ctx);
 	mutex_unlock(&ctx->uring_lock);
 	percpu_ref_put(&ctx->refs);
 }
 
-- 
2.45.2