Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx2.netapp.com ([216.240.18.37]:15962 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755125Ab2JPQbL (ORCPT ); Tue, 16 Oct 2012 12:31:11 -0400 From: Weston Andros Adamson To: Trond.Myklebust@netapp.com Cc: linux-nfs@vger.kernel.org, Weston Andros Adamson Subject: [PATCH 15/25] SUNRPC: remove BUG_ON()s from *_reclassify_socket* Date: Tue, 16 Oct 2012 12:30:33 -0400 Message-Id: <1350405043-39316-15-git-send-email-dros@netapp.com> In-Reply-To: <1350405043-39316-1-git-send-email-dros@netapp.com> References: <1350405043-39316-1-git-send-email-dros@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Replace multiple BUG_ON() calls with WARN_ON_ONCE() and early return when sanity checking socket ownership (lock). The bind call will fail if the socket was unsuccessfully reclassified. Signed-off-by: Weston Andros Adamson --- net/sunrpc/svcsock.c | 6 +++++- net/sunrpc/xprtsock.c | 7 ++++--- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 03827ce..cc3020d 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -84,7 +84,11 @@ static struct lock_class_key svc_slock_key[2]; static void svc_reclassify_socket(struct socket *sock) { struct sock *sk = sock->sk; - BUG_ON(sock_owned_by_user(sk)); + + WARN_ON_ONCE(sock_owned_by_user(sk)); + if (sock_owned_by_user(sk)) + return; + switch (sk->sk_family) { case AF_INET: sock_lock_init_class_and_name(sk, "slock-AF_INET-NFSD", diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index aaaadfb..4e76d38 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1762,7 +1762,6 @@ static inline void xs_reclassify_socketu(struct socket *sock) { struct sock *sk = sock->sk; - BUG_ON(sock_owned_by_user(sk)); sock_lock_init_class_and_name(sk, "slock-AF_LOCAL-RPC", &xs_slock_key[1], "sk_lock-AF_LOCAL-RPC", &xs_key[1]); } @@ -1771,7 +1770,6 @@ static inline void xs_reclassify_socket4(struct socket *sock) { struct sock *sk = sock->sk; - BUG_ON(sock_owned_by_user(sk)); sock_lock_init_class_and_name(sk, "slock-AF_INET-RPC", &xs_slock_key[0], "sk_lock-AF_INET-RPC", &xs_key[0]); } @@ -1780,13 +1778,16 @@ static inline void xs_reclassify_socket6(struct socket *sock) { struct sock *sk = sock->sk; - BUG_ON(sock_owned_by_user(sk)); sock_lock_init_class_and_name(sk, "slock-AF_INET6-RPC", &xs_slock_key[1], "sk_lock-AF_INET6-RPC", &xs_key[1]); } static inline void xs_reclassify_socket(int family, struct socket *sock) { + WARN_ON_ONCE(sock_owned_by_user(sock->sk)); + if (sock_owned_by_user(sock->sk)) + return; + switch (family) { case AF_LOCAL: xs_reclassify_socketu(sock); -- 1.7.9.6 (Apple Git-31.1)