tree 983509d071b6ce33493327fe3cfc5236911536fc
parent 7ef66d186eb95f987a97fb3329b65c840e2dc9bf
author Dylan Yudaken <dylany@fb.com> 1648132475 -0700
committer Jens Axboe <axboe@kernel.dk> 1648159829 -0600

io_uring: fix async accept on O_NONBLOCK sockets

Do not set REQ_F_NOWAIT if the socket is non blocking. When enabled this
causes the accept to immediately post a CQE with EAGAIN, which means you
cannot perform an accept SQE on a NONBLOCK socket asynchronously.

By removing the flag if there is no pending accept then poll is armed as
usual and when a connection comes in the CQE is posted.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220324143435.2875844-1-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>