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| author |  Pavel Begunkov <asml.silence@gmail.com>
| 2022-07-27 10:30:41 +0100 |
|---|---|---|
| committer |  Jens Axboe <axboe@kernel.dk>
| 2022-07-27 08:50:50 -0600 |
| commit | 14b146b688ad9593f5eee93d51a34d09a47e50b5 (patch) | |
| tree | 760b8eb09789bf4df3eec796829bae78b7c480fe /io_uring/net.c | |
| parent | io_uring: export req alloc from core (diff) | |
| download | linux-14b146b688ad9593f5eee93d51a34d09a47e50b5.tar.gz linux-14b146b688ad9593f5eee93d51a34d09a47e50b5.tar.bz2 linux-14b146b688ad9593f5eee93d51a34d09a47e50b5.zip | |
io_uring: notification completion optimisation
We want to use all optimisations that we have for io_uring requests like
completion batching, memory caching and more but for zc notifications.
Fortunately, notification perfectly fit the request model so we can
overlay them onto struct io_kiocb and use all the infratructure.
Most of the fields of struct io_notif natively fits into io_kiocb, so we
replace struct io_notif with struct io_kiocb carrying struct
io_notif_data in the cmd cache line. Then we adapt io_alloc_notif() to
use io_alloc_req()/io_alloc_req_refill(), and kill leftovers of hand
coded caching. __io_notif_complete_tw() is converted to use io_uring's
tw infra.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9e010125175e80baf51f0ca63bdc7cc6a4a9fa56.1658913593.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/net.c')
| -rw-r--r-- | io_uring/net.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/io_uring/net.c b/io_uring/net.c index 8276b9537194..32fc3da04e41 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -946,7 +946,7 @@ int io_sendzc(struct io_kiocb *req, unsigned int issue_flags) struct io_ring_ctx *ctx = req->ctx; struct io_sendzc *zc = io_kiocb_to_cmd(req); struct io_notif_slot *notif_slot; - struct io_notif *notif; + struct io_kiocb *notif; struct msghdr msg; struct iovec iov; struct socket *sock; @@ -1005,7 +1005,7 @@ int io_sendzc(struct io_kiocb *req, unsigned int issue_flags) min_ret = iov_iter_count(&msg.msg_iter); msg.msg_flags = msg_flags; - msg.msg_ubuf = ¬if->uarg; + msg.msg_ubuf = &io_notif_to_data(notif)->uarg; msg.sg_from_iter = io_sg_from_iter; ret = sock_sendmsg(sock, &msg); |