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(parent: e5f2c4e) | patch
io_uring: add IOSQE_ASYNC
authorJens Axboe <axboe@kernel.dk>
Tue, 17 Dec 2019 15:04:44 +0000 (08:04 -0700)
committerJens Axboe <axboe@kernel.dk>
Wed, 15 Jan 2020 22:05:00 +0000 (15:05 -0700)
commite63846130e6902fe26f6f8a83b849208a6942646
treea7d6b4541b443a30119f4a58369a04fc68b979bctree
parente5f2c4e029a6b27f75775f4ffb96b8e8208d5717commit | diff
io_uring: add IOSQE_ASYNC

io_uring defaults to always doing inline submissions, if at all
possible. But for larger copies, even if the data is fully cached, that
can take a long time. Add an IOSQE_ASYNC flag that the application can
set on the SQE - if set, it'll ensure that we always go async for those
kinds of requests. Use the io-wq IO_WQ_WORK_CONCURRENT flag to ensure we
get the concurrency we desire for this case.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | blame | history
include/uapi/linux/io_uring.h diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)