Commits
Pavel Begunkov committed 00235274748
io_uring: don't wait when under-submitting [ Upstream commit 7c504e65206a4379ff38fe41d21b32b6c2c3e53e ] There is no reliable way to submit and wait in a single syscall, as io_submit_sqes() may under-consume sqes (in case of an early error). Then it will wait for not-yet-submitted requests, deadlocking the user in most cases. Don't wait/poll if can't submit all sqes Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>