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From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>,
	[email protected], [email protected]
Subject: [PATCH 4/5] io_uring: add missing io_req_cancelled()
Date: Tue, 11 Feb 2020 23:01:57 +0300	[thread overview]
Message-ID: <0a34342f63cd7a535cc54e5e1fe3ab73907a7da9.1581450491.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>

fallocate_finish() is missing cancellation check. Add it.
It's safe to do that, as only flags setup and sqe fields copy are done
before it gets into __io_fallocate().

Signed-off-by: Pavel Begunkov <[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 f3108bce4afe..b33f2521040e 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2529,6 +2529,8 @@ static void io_fallocate_finish(struct io_wq_work **workptr)
 	struct io_kiocb *req = container_of(*workptr, struct io_kiocb, work);
 	struct io_kiocb *nxt = NULL;
 
+	if (io_req_cancelled(req))
+		return;
 	__io_fallocate(req, &nxt);
 	if (nxt)
 		io_wq_assign_next(workptr, nxt);
@@ -2905,6 +2907,7 @@ static void io_close_finish(struct io_wq_work **workptr)
 	struct io_kiocb *req = container_of(*workptr, struct io_kiocb, work);
 	struct io_kiocb *nxt = NULL;
 
+	/* not cancellable, don't io_req_cancelled() */
 	__io_close_finish(req, &nxt);
 	if (nxt)
 		io_wq_assign_next(workptr, nxt);
-- 
2.24.0


  parent reply	other threads:[~2020-02-11 20:03 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-11 20:01 [PATCH 0/5] async punting improvements for io_uring Pavel Begunkov
2020-02-11 20:01 ` [PATCH 1/5] io_uring: remove REQ_F_MUST_PUNT Pavel Begunkov
2020-02-11 20:01 ` [PATCH 2/5] io_uring: don't call work.func from sync ctx Pavel Begunkov
2020-02-11 20:01 ` [PATCH 3/5] io_uring: fix reassigning work.task_pid from io-wq Pavel Begunkov
2020-02-11 20:21   ` Jens Axboe
2020-02-11 20:57     ` Pavel Begunkov
2020-02-11 20:59       ` Jens Axboe
2020-02-11 20:01 ` Pavel Begunkov [this message]
2020-02-11 20:01 ` [PATCH 5/5] io_uring: purge req->in_async Pavel Begunkov

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