From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>, Hao Xu <[email protected]>,
Pavel Begunkov <[email protected]>
Subject: [PATCH 5/8] io_uring: don't try io-wq polling if not supported
Date: Sat, 23 Oct 2021 12:13:59 +0100 [thread overview]
Message-ID: <6401256db01b88f448f15fcd241439cb76f5b940.1634987320.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
If an opcode doesn't support polling, just let it be executed
synchronously in iowq, otherwise it will do a nonblock attempt just to
fail in io_arm_poll_handler() and return back to blocking execution.
Signed-off-by: Pavel Begunkov <[email protected]>
---
fs/io_uring.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index bff911f951ed..c6f32fcf387b 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -6741,9 +6741,13 @@ static void io_wq_submit_work(struct io_wq_work *work)
}
if (req->flags & REQ_F_FORCE_ASYNC) {
- needs_poll = req->file && file_can_poll(req->file);
- if (needs_poll)
+ const struct io_op_def *def = &io_op_defs[req->opcode];
+ bool opcode_poll = def->pollin || def->pollout;
+
+ if (opcode_poll && file_can_poll(req->file)) {
+ needs_poll = true;
issue_flags |= IO_URING_F_NONBLOCK;
+ }
}
do {
--
2.33.1
next prev parent reply other threads:[~2021-10-23 11:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-23 11:13 [PATCH 0/8] for-next cleanups Pavel Begunkov
2021-10-23 11:13 ` [PATCH 1/8] io-wq: use helper for worker refcounting Pavel Begunkov
2021-10-23 11:13 ` [PATCH 2/8] io_uring: clean io_wq_submit_work()'s main loop Pavel Begunkov
2021-10-25 8:53 ` Hao Xu
2021-10-23 11:13 ` [PATCH 3/8] io_uring: clean iowq submit work cancellation Pavel Begunkov
2021-10-25 8:57 ` Hao Xu
2021-10-23 11:13 ` [PATCH 4/8] io_uring: check if opcode needs poll first on arming Pavel Begunkov
2021-10-25 8:58 ` Hao Xu
2021-10-23 11:13 ` Pavel Begunkov [this message]
2021-10-25 8:58 ` [PATCH 5/8] io_uring: don't try io-wq polling if not supported Hao Xu
2021-10-23 11:14 ` [PATCH 6/8] io_uring: clean up timeout async_data allocation Pavel Begunkov
2021-10-23 11:14 ` [PATCH 7/8] io_uring: kill unused param from io_file_supports_nowait Pavel Begunkov
2021-10-23 11:14 ` [PATCH 8/8] io_uring: clusterise ki_flags access in rw_prep Pavel Begunkov
2021-10-23 14:09 ` [PATCH 0/8] for-next cleanups Jens Axboe
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