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authorPavel Begunkov <asml.silence@gmail.com>2022-07-27 10:30:41 +0100
committerJens Axboe <axboe@kernel.dk>2022-07-27 08:50:50 -0600
commit14b146b688ad9593f5eee93d51a34d09a47e50b5 (patch)
tree760b8eb09789bf4df3eec796829bae78b7c480fe /io_uring/net.c
parentbd1a3783dd749012134b142b52e5704f7c142897 (diff)
downloadlinux-14b146b688ad9593f5eee93d51a34d09a47e50b5.tar.bz2
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.c4
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 = &notif->uarg;
+ msg.msg_ubuf = &io_notif_to_data(notif)->uarg;
msg.sg_from_iter = io_sg_from_iter;
ret = sock_sendmsg(sock, &msg);