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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-03-15 08:12:40 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 19:44:42 +0100 |
| commit | e89ac70361666443d948056484f081d7332bb564 (patch) | |
| tree | 4ec27a8198f23643cf8dfb509f415368bf87c89e /net/sunrpc | |
| parent | 768df674c529e0ec38dec21d0ecca928578099b4 (diff) | |
| download | linux-e89ac70361666443d948056484f081d7332bb564.tar.gz linux-e89ac70361666443d948056484f081d7332bb564.tar.bz2 linux-e89ac70361666443d948056484f081d7332bb564.zip | |
SUNRPC: Replace internal use of SOCKWQ_ASYNC_NOSPACE
[ Upstream commit 2790a624d43084de590884934969e19c7a82316a ]
The socket's SOCKWQ_ASYNC_NOSPACE can be cleared by various actors in
the socket layer, so replace it with our own flag in the transport
sock_state field.
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Stable-dep-of: 4db9ad82a6c8 ("sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtsock.c | 22 |
1 files changed, 4 insertions, 18 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index ffa9df8f1679..fde3fb7387d0 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -891,14 +891,8 @@ static int xs_nospace(struct rpc_rqst *req, struct sock_xprt *transport) /* Don't race with disconnect */ if (xprt_connected(xprt)) { - struct socket_wq *wq; - - rcu_read_lock(); - wq = rcu_dereference(sk->sk_wq); - set_bit(SOCKWQ_ASYNC_NOSPACE, &wq->flags); - rcu_read_unlock(); - /* wait for more buffer space */ + set_bit(XPRT_SOCK_NOSPACE, &transport->sock_state); set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); sk->sk_write_pending++; xprt_wait_for_buffer_space(xprt); @@ -1246,6 +1240,7 @@ static void xs_sock_reset_state_flags(struct rpc_xprt *xprt) clear_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state); clear_bit(XPRT_SOCK_WAKE_WRITE, &transport->sock_state); clear_bit(XPRT_SOCK_WAKE_DISCONNECT, &transport->sock_state); + clear_bit(XPRT_SOCK_NOSPACE, &transport->sock_state); } static void xs_run_error_worker(struct sock_xprt *transport, unsigned int nr) @@ -1609,7 +1604,6 @@ static void xs_tcp_state_change(struct sock *sk) static void xs_write_space(struct sock *sk) { - struct socket_wq *wq; struct sock_xprt *transport; struct rpc_xprt *xprt; @@ -1620,15 +1614,10 @@ static void xs_write_space(struct sock *sk) if (unlikely(!(xprt = xprt_from_sock(sk)))) return; transport = container_of(xprt, struct sock_xprt, xprt); - rcu_read_lock(); - wq = rcu_dereference(sk->sk_wq); - if (!wq || test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &wq->flags) == 0) - goto out; - + if (!test_and_clear_bit(XPRT_SOCK_NOSPACE, &transport->sock_state)) + return; xs_run_error_worker(transport, XPRT_SOCK_WAKE_WRITE); sk->sk_write_pending--; -out: - rcu_read_unlock(); } /** @@ -1979,7 +1968,6 @@ static int xs_local_finish_connecting(struct rpc_xprt *xprt, sk->sk_user_data = xprt; sk->sk_data_ready = xs_data_ready; sk->sk_write_space = xs_udp_write_space; - sock_set_flag(sk, SOCK_FASYNC); sk->sk_error_report = xs_error_report; xprt_clear_connected(xprt); @@ -2176,7 +2164,6 @@ static void xs_udp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock) sk->sk_user_data = xprt; sk->sk_data_ready = xs_data_ready; sk->sk_write_space = xs_udp_write_space; - sock_set_flag(sk, SOCK_FASYNC); xprt_set_connected(xprt); @@ -2337,7 +2324,6 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock) sk->sk_data_ready = xs_data_ready; sk->sk_state_change = xs_tcp_state_change; sk->sk_write_space = xs_tcp_write_space; - sock_set_flag(sk, SOCK_FASYNC); sk->sk_error_report = xs_error_report; /* socket options */ |