linux-kernel - [PATCH 2/3] io_uring: deduce force_nonblock in io_issue

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Date:   Wed,  5 Feb 2020 22:07:32 +0300
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] io_uring: deduce force_nonblock in io_issue_sqe()

It passes "@sqe == NULL" IIF it's in wq context. Don't pass
@force_nonblock but deduce it.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 fs/io_uring.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index e18056af5672..b24d3b975344 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4207,10 +4207,11 @@ static int io_req_defer(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 }
 
 static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
-			struct io_kiocb **nxt, bool force_nonblock)
+			struct io_kiocb **nxt)
 {
 	struct io_ring_ctx *ctx = req->ctx;
 	int ret;
+	bool force_nonblock = (sqe != NULL);
 
 	switch (req->opcode) {
 	case IORING_OP_NOP:
@@ -4448,7 +4449,7 @@ static void io_wq_submit_work(struct io_wq_work **workptr)
 		req->has_user = (work->flags & IO_WQ_WORK_HAS_MM) != 0;
 		req->in_async = true;
 		do {
-			ret = io_issue_sqe(req, NULL, &nxt, false);
+			ret = io_issue_sqe(req, NULL, &nxt);
 			/*
 			 * We can get EAGAIN for polled IO even though we're
 			 * forcing a sync submission from here, since we can't
@@ -4643,7 +4644,7 @@ static void __io_queue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 again:
 	linked_timeout = io_prep_linked_timeout(req);
 
-	ret = io_issue_sqe(req, sqe, &nxt, true);
+	ret = io_issue_sqe(req, sqe, &nxt);
 
 	/*
 	 * We async punt it if the file wasn't marked NOWAIT, or if the file
-- 
2.24.0