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From: Jens Axboe <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>
Subject: [PATCH 2/9] io_uring: transform ret == 0 for poll cancelation completions
Date: Wed, 17 Mar 2021 10:29:36 -0600	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

We can set canceled == true and complete out-of-line, ensure that we catch
that and correctly return -ECANCELED if the poll operation got canceled.

Signed-off-by: Jens Axboe <[email protected]>
---
 fs/io_uring.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 4aa93dfa3186..dbca1de0be2f 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4918,6 +4918,9 @@ static void io_poll_complete(struct io_kiocb *req, __poll_t mask, int error)
 {
 	struct io_ring_ctx *ctx = req->ctx;
 
+	if (!error && req->poll.canceled)
+		error = -ECANCELED;
+
 	io_poll_remove_double(req);
 	req->poll.done = true;
 	io_cqring_fill_event(req, error ? error : mangle_poll(mask));
-- 
2.31.0


  parent reply	other threads:[~2021-03-17 16:30 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-17 16:29 [PATCHSET for-next 0/9] Poll improvements Jens Axboe
2021-03-17 16:29 ` [PATCH 1/9] io_uring: correct comment on poll vs iopoll Jens Axboe
2021-03-17 16:29 ` Jens Axboe [this message]
2021-03-17 16:29 ` [PATCH 3/9] io_uring: allocate memory for overflowed CQEs Jens Axboe
2021-03-17 16:29 ` [PATCH 4/9] io_uring: include cflags in completion trace event Jens Axboe
2021-03-17 16:29 ` [PATCH 5/9] io_uring: add multishot mode for IORING_OP_POLL_ADD Jens Axboe
2021-03-17 16:29 ` [PATCH 6/9] io_uring: abstract out helper for removing poll waitqs/hashes Jens Axboe
2021-03-17 16:29 ` [PATCH 7/9] io_uring: terminate multishot poll for CQ ring overflow Jens Axboe
2021-03-17 16:29 ` [PATCH 8/9] io_uring: abstract out a io_poll_find_helper() Jens Axboe
2021-03-17 16:29 ` [PATCH 9/9] io_uring: allow events update of running poll requests Jens Axboe
2021-03-19  3:31   ` Hao Xu
2021-03-19 13:37     ` Jens Axboe

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