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authorAl Viro <viro@zeniv.linux.org.uk>2025-07-13 19:01:34 +0100
committerJakub Kicinski <kuba@kernel.org>2025-07-15 16:19:54 -0700
commit5cc7fce3493c8627c74260de5b2479da6d508277 (patch)
treec88fc832324ed9e79cb9c0956a81ba37e3e93fa8
parentc34632dbb29ba7016f1cd2e629ac9dd07f84ce50 (diff)
don't open-code kernel_accept() in rds_tcp_accept_one()
rds_tcp_accept_one() starts with a pretty much verbatim copy of kernel_accept(). Might as well use the real thing... That code went into mainline in 2009, kernel_accept() had been added in Aug 2006, the copyright on rds/tcp_listen.c is "Copyright (c) 2006 Oracle", so it's entirely possible that it predates the introduction of kernel_accept(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://patch.msgid.link/20250713180134.GC1880847@ZenIV Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--net/rds/tcp_listen.c24
1 files changed, 2 insertions, 22 deletions
diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c
index b5c801c629a4..91e34af3fe5d 100644
--- a/net/rds/tcp_listen.c
+++ b/net/rds/tcp_listen.c
@@ -105,10 +105,6 @@ int rds_tcp_accept_one(struct socket *sock)
int conn_state;
struct rds_conn_path *cp;
struct in6_addr *my_addr, *peer_addr;
- struct proto_accept_arg arg = {
- .flags = O_NONBLOCK,
- .kern = true,
- };
#if !IS_ENABLED(CONFIG_IPV6)
struct in6_addr saddr, daddr;
#endif
@@ -117,25 +113,9 @@ int rds_tcp_accept_one(struct socket *sock)
if (!sock) /* module unload or netns delete in progress */
return -ENETUNREACH;
- ret = sock_create_lite(sock->sk->sk_family,
- sock->sk->sk_type, sock->sk->sk_protocol,
- &new_sock);
+ ret = kernel_accept(sock, &new_sock, O_NONBLOCK);
if (ret)
- goto out;
-
- ret = sock->ops->accept(sock, new_sock, &arg);
- if (ret < 0)
- goto out;
-
- /* sock_create_lite() does not get a hold on the owner module so we
- * need to do it here. Note that sock_release() uses sock->ops to
- * determine if it needs to decrement the reference count. So set
- * sock->ops after calling accept() in case that fails. And there's
- * no need to do try_module_get() as the listener should have a hold
- * already.
- */
- new_sock->ops = sock->ops;
- __module_get(new_sock->ops->owner);
+ return ret;
rds_tcp_keepalive(new_sock);
if (!rds_tcp_tune(new_sock)) {