Commit 761c61c1 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring/msg_ring: flag target ring as having task_work, if needed 

Before the recent change, we didn't even wake the targeted task when
posting the cqe remotely. Now we do wake it, but we do want to ensure
that the recipient knows there's potential work there that needs to
get processed to get the CQE posted.

OR in IORING_SQ_TASKRUN for that purpose.

Link: https://lore.kernel.org/io-uring/2843c6b4-ba9a-b67d-e0f4-957f42098489@kernel.dk/


Fixes: 6d043ee1 ("io_uring: do msg_ring in target task via tw")
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent f66f7342

io_uring/msg_ring.c

+1 −0
Original line number Diff line number Diff line
@@ -67,6 +67,7 @@ static int io_msg_ring_data(struct io_kiocb *req) 
				  TWA_SIGNAL_NO_IPI))

			return -EOWNERDEAD;



		atomic_or(IORING_SQ_TASKRUN, &target_ctx->rings->sq_flags);

		return IOU_ISSUE_SKIP_COMPLETE;

	}