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From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>, io-uring@vger.kernel.org
Subject: [PATCH v2 4/9] io_uring: kill not necessary resubmit switch
Date: Sun, 15 Aug 2021 10:40:21 +0100	[thread overview]
Message-ID: <47fa177cca04e5ffd308a35227966c8e15d8525b.1628981736.git.asml.silence@gmail.com> (raw)
In-Reply-To: <cover.1628981736.git.asml.silence@gmail.com>

773af69121ecc ("io_uring: always reissue from task_work context") makes
all resubmission to be made from task_work, so we don't need that hack
with resubmit/not-resubmit switch anymore.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 fs/io_uring.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index d2b968c8111f..fb3b07c0f15a 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2291,7 +2291,7 @@ static inline bool io_run_task_work(void)
  * Find and free completed poll iocbs
  */
 static void io_iopoll_complete(struct io_ring_ctx *ctx, unsigned int *nr_events,
-			       struct list_head *done, bool resubmit)
+			       struct list_head *done)
 {
 	struct req_batch rb;
 	struct io_kiocb *req;
@@ -2306,7 +2306,7 @@ static void io_iopoll_complete(struct io_ring_ctx *ctx, unsigned int *nr_events,
 		req = list_first_entry(done, struct io_kiocb, inflight_entry);
 		list_del(&req->inflight_entry);
 
-		if (READ_ONCE(req->result) == -EAGAIN && resubmit &&
+		if (READ_ONCE(req->result) == -EAGAIN &&
 		    !(req->flags & REQ_F_DONT_REISSUE)) {
 			req->iopoll_completed = 0;
 			io_req_task_queue_reissue(req);
@@ -2329,7 +2329,7 @@ static void io_iopoll_complete(struct io_ring_ctx *ctx, unsigned int *nr_events,
 }
 
 static int io_do_iopoll(struct io_ring_ctx *ctx, unsigned int *nr_events,
-			long min, bool resubmit)
+			long min)
 {
 	struct io_kiocb *req, *tmp;
 	LIST_HEAD(done);
@@ -2369,7 +2369,7 @@ static int io_do_iopoll(struct io_ring_ctx *ctx, unsigned int *nr_events,
 	}
 
 	if (!list_empty(&done))
-		io_iopoll_complete(ctx, nr_events, &done, resubmit);
+		io_iopoll_complete(ctx, nr_events, &done);
 
 	return 0;
 }
@@ -2387,7 +2387,7 @@ static void io_iopoll_try_reap_events(struct io_ring_ctx *ctx)
 	while (!list_empty(&ctx->iopoll_list)) {
 		unsigned int nr_events = 0;
 
-		io_do_iopoll(ctx, &nr_events, 0, false);
+		io_do_iopoll(ctx, &nr_events, 0);
 
 		/* let it sleep and repeat later if can't complete a request */
 		if (nr_events == 0)
@@ -2449,7 +2449,7 @@ static int io_iopoll_check(struct io_ring_ctx *ctx, long min)
 			    list_empty(&ctx->iopoll_list))
 				break;
 		}
-		ret = io_do_iopoll(ctx, &nr_events, min, true);
+		ret = io_do_iopoll(ctx, &nr_events, min);
 	} while (!ret && nr_events < min && !need_resched());
 out:
 	mutex_unlock(&ctx->uring_lock);
@@ -6855,7 +6855,7 @@ static int __io_sq_thread(struct io_ring_ctx *ctx, bool cap_entries)
 
 		mutex_lock(&ctx->uring_lock);
 		if (!list_empty(&ctx->iopoll_list))
-			io_do_iopoll(ctx, &nr_events, 0, true);
+			io_do_iopoll(ctx, &nr_events, 0);
 
 		/*
 		 * Don't submit if refs are dying, good for io_uring_register(),
-- 
2.32.0


  parent reply	other threads:[~2021-08-15  9:41 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-15  9:40 [PATCH v2 for-next 0/5] 5.15 cleanups and optimisations Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 1/9] io_uring: optimise iowq refcounting Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 2/9] io_uring: don't inflight-track linked timeouts Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 3/9] io_uring: optimise initial ltimeout refcounting Pavel Begunkov
2021-08-15  9:40 ` Pavel Begunkov [this message]
2021-08-15  9:40 ` [PATCH v2 5/9] io_uring: deduplicate cancellation code Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 6/9] io_uring: kill REQ_F_LTIMEOUT_ACTIVE Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 7/9] io_uring: simplify io_prep_linked_timeout Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 8/9] io_uring: cancel not-armed linked touts separately Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 9/9] io_uring: optimise io_prep_linked_timeout() Pavel Begunkov
2021-08-15 15:17 ` [PATCH v2 for-next 0/5] 5.15 cleanups and optimisations Jens Axboe

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