netdev - [RFC 5/6] io_uring/notif: simplify io_notif

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Message-ID: <3149fcf08c6143c7d809423c213c497deeb9a138.1712923998.git.asml.silence@gmail.com>
Date: Fri, 12 Apr 2024 13:55:26 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: io-uring@...r.kernel.org,
	netdev@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>,
	asml.silence@...il.com,
	"David S . Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	David Ahern <dsahern@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Willem de Bruijn <willemdebruijn.kernel@...il.com>
Subject: [RFC 5/6] io_uring/notif: simplify io_notif_flush()

io_notif_flush() is partially duplicating io_tx_ubuf_complete(), so
instead of duplicating it, make the flush call io_tx_ubuf_complete.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 io_uring/notif.c | 6 +++---
 io_uring/notif.h | 9 +++------
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/io_uring/notif.c b/io_uring/notif.c
index 53532d78a947..26680176335f 100644
--- a/io_uring/notif.c
+++ b/io_uring/notif.c
@@ -9,7 +9,7 @@
 #include "notif.h"
 #include "rsrc.h"
 
-void io_notif_tw_complete(struct io_kiocb *notif, struct io_tw_state *ts)
+static void io_notif_tw_complete(struct io_kiocb *notif, struct io_tw_state *ts)
 {
 	struct io_notif_data *nd = io_notif_to_data(notif);
 
@@ -23,8 +23,8 @@ void io_notif_tw_complete(struct io_kiocb *notif, struct io_tw_state *ts)
 	io_req_task_complete(notif, ts);
 }
 
-static void io_tx_ubuf_complete(struct sk_buff *skb, struct ubuf_info *uarg,
-				bool success)
+void io_tx_ubuf_complete(struct sk_buff *skb, struct ubuf_info *uarg,
+			 bool success)
 {
 	struct io_notif_data *nd = container_of(uarg, struct io_notif_data, uarg);
 	struct io_kiocb *notif = cmd_to_io_kiocb(nd);
diff --git a/io_uring/notif.h b/io_uring/notif.h
index 52e124a9957c..394e1d33daa6 100644
--- a/io_uring/notif.h
+++ b/io_uring/notif.h
@@ -20,7 +20,8 @@ struct io_notif_data {
 };
 
 struct io_kiocb *io_alloc_notif(struct io_ring_ctx *ctx);
-void io_notif_tw_complete(struct io_kiocb *notif, struct io_tw_state *ts);
+void io_tx_ubuf_complete(struct sk_buff *skb, struct ubuf_info *uarg,
+			 bool success);
 
 static inline struct io_notif_data *io_notif_to_data(struct io_kiocb *notif)
 {
@@ -32,11 +33,7 @@ static inline void io_notif_flush(struct io_kiocb *notif)
 {
 	struct io_notif_data *nd = io_notif_to_data(notif);
 
-	/* drop slot's master ref */
-	if (refcount_dec_and_test(&nd->uarg.refcnt)) {
-		notif->io_task_work.func = io_notif_tw_complete;
-		__io_req_task_work_add(notif, IOU_F_TWQ_LAZY_WAKE);
-	}
+	io_tx_ubuf_complete(NULL, &nd->uarg, true);
 }
 
 static inline int io_notif_account_mem(struct io_kiocb *notif, unsigned len)
-- 
2.44.0