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From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: [PATCH 4/7] io_uring: kill poll linking optimisation
Date: Wed, 15 Dec 2021 22:08:47 +0000	[thread overview]
Message-ID: <15699682bf81610ec901d4e79d6da64baa9f70be.1639605189.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>

With IORING_FEAT_FAST_POLL in place, io_put_req_find_next() for poll
requests doesn't make much sense, and in any case re-adding it
shouldn't be a problem considering batching in tctx_task_work(). We can
remove it.

Signed-off-by: Pavel Begunkov <[email protected]>
---
 fs/io_uring.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index c106c0fbaca2..9a2b3cf7c0c5 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5485,7 +5485,6 @@ static bool __io_poll_complete(struct io_kiocb *req, __poll_t mask)
 static void io_poll_task_func(struct io_kiocb *req, bool *locked)
 {
 	struct io_ring_ctx *ctx = req->ctx;
-	struct io_kiocb *nxt;
 
 	if (io_poll_rewait(req, &req->poll)) {
 		spin_unlock(&ctx->completion_lock);
@@ -5509,11 +5508,8 @@ static void io_poll_task_func(struct io_kiocb *req, bool *locked)
 		spin_unlock(&ctx->completion_lock);
 		io_cqring_ev_posted(ctx);
 
-		if (done) {
-			nxt = io_put_req_find_next(req);
-			if (nxt)
-				io_req_task_submit(nxt, locked);
-		}
+		if (done)
+			io_put_req(req);
 	}
 }
 
-- 
2.34.0


  parent reply	other threads:[~2021-12-15 22:09 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-15 22:08 [PATCH for-next 0/7] reworking io_uring's poll and internal poll Pavel Begunkov
2021-12-15 22:08 ` [PATCH 1/7] io_uring: remove double poll on poll update Pavel Begunkov
2021-12-15 22:08 ` [PATCH 2/7] io_uring: refactor " Pavel Begunkov
2021-12-15 22:08 ` [PATCH 3/7] io_uring: move common poll bits Pavel Begunkov
2021-12-15 22:08 ` Pavel Begunkov [this message]
2021-12-15 22:08 ` [PATCH 5/7] io_uring: poll rework Pavel Begunkov
2021-12-15 22:08 ` [PATCH 6/7] io_uring: single shot poll removal optimisation Pavel Begunkov
2021-12-15 22:08 ` [PATCH 7/7] io_uring: use completion batching for poll rem/upd Pavel Begunkov
2021-12-17 15:02 ` [PATCH for-next 0/7] reworking io_uring's poll and internal poll Hao Xu
2021-12-17 19:40   ` Pavel Begunkov
2021-12-28 17:51 ` Jens Axboe

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