tree 72cfb67e5be52cb208cfe0563c1f4931388eef8e
parent 2d71bffbe9a0f2b25d4ba03df21bddd5dbdfa9cc
author Pavel Begunkov <asml.silence@gmail.com> 1605892228 +0000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1618566398 +0200

block: don't ignore REQ_NOWAIT for direct IO

[ Upstream commit f8b78caf21d5bc3fcfc40c18898f9d52ed1451a5 ]

If IOCB_NOWAIT is set on submission, then that needs to get propagated to
REQ_NOWAIT on the block side. Otherwise we completely lose this
information, and any issuer of IOCB_NOWAIT IO will potentially end up
blocking on eg request allocation on the storage side.

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>