diff options
| author | Jens Axboe <axboe@kernel.dk> | 2019-12-10 06:58:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-09 12:17:52 +0300 |
| commit | f42504ab0aec92b757468bb3cf4fa345d6ff822d (patch) | |
| tree | 91d81434cdc64beabcb7905b12abaf0062d73947 | |
| parent | fbff45d2413eb11a0534b3faf9b00636b21337c3 (diff) | |
| download | linux-f42504ab0aec92b757468bb3cf4fa345d6ff822d.tar.xz | |
net: make socket read/write_iter() honor IOCB_NOWAIT
[ Upstream commit ebfcd8955c0b52eb793bcbc9e71140e3d0cdb228 ]
The socket read/write helpers only look at the file O_NONBLOCK. not
the iocb IOCB_NOWAIT flag. This breaks users like preadv2/pwritev2
and io_uring that rely on not having the file itself marked nonblocking,
but rather the iocb itself.
Cc: netdev@vger.kernel.org
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/socket.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/socket.c b/net/socket.c index aab65277314d..5b134a6b6216 100644 --- a/net/socket.c +++ b/net/socket.c @@ -891,7 +891,7 @@ static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to) .msg_iocb = iocb}; ssize_t res; - if (file->f_flags & O_NONBLOCK) + if (file->f_flags & O_NONBLOCK || (iocb->ki_flags & IOCB_NOWAIT)) msg.msg_flags = MSG_DONTWAIT; if (iocb->ki_pos != 0) @@ -916,7 +916,7 @@ static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from) if (iocb->ki_pos != 0) return -ESPIPE; - if (file->f_flags & O_NONBLOCK) + if (file->f_flags & O_NONBLOCK || (iocb->ki_flags & IOCB_NOWAIT)) msg.msg_flags = MSG_DONTWAIT; if (sock->type == SOCK_SEQPACKET) |