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[for-next,20/25] io_uring: use state completion infra for poll reqs

Message ID 8ef49e3c8619395fe2d5d7e00e69f0af8d5cc9e2.1655209709.git.asml.silence@gmail.com (mailing list archive)
State New
Headers show
Series 5.20 cleanups and poll optimisations | expand

Commit Message

Pavel Begunkov June 14, 2022, 12:29 p.m. UTC 
Use io_req_task_complete() for poll request completions, so it can
utilise state completions and save lots of unnecessary locking.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/poll.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
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Patch

diff --git a/io_uring/poll.c b/io_uring/poll.c
index ad25a964d4ed..2688201e872a 100644
--- a/io_uring/poll.c
+++ b/io_uring/poll.c
@@ -234,12 +234,8 @@  static void io_poll_task_func(struct io_kiocb *req, bool *locked)
 
 	io_poll_remove_entries(req);
 	io_poll_req_delete(req, ctx);
-	spin_lock(&ctx->completion_lock);
-	req->cqe.flags = 0;
-	__io_req_complete_post(req);
-	io_commit_cqring(ctx);
-	spin_unlock(&ctx->completion_lock);
-	io_cqring_ev_posted(ctx);
+	io_req_set_res(req, req->cqe.res, 0);
+	io_req_task_complete(req, locked);
 }
 
 static void io_apoll_task_func(struct io_kiocb *req, bool *locked)