From: Tom Tucker Subject: [PATCH 20/38] svc: Make svc_send transport neutral Date: Tue, 11 Dec 2007 17:32:38 -0600 Message-ID: <20071211233238.15718.49236.stgit@dell3.ogc.int> References: <20071211233150.15718.40579.stgit@dell3.ogc.int> Content-Type: text/plain; charset=utf-8; format=fixed Cc: neilb@suse.de, linux-nfs@vger.kernel.org To: bfields@fieldses.org Return-path: Received: from 209-198-142-2-host.prismnet.net ([209.198.142.2]:35418 "EHLO smtp.opengridcomputing.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754659AbXLKXcj (ORCPT ); Tue, 11 Dec 2007 18:32:39 -0500 In-Reply-To: <20071211233150.15718.40579.stgit-gUwIgmpLGaKNDNWfRnPdfg@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: Move the sk_mutex field to the transport independent svc_xprt structure. Now all the fields that svc_send touches are transport neutral. Change the svc_send function to use the transport independent svc_xprt directly instead of the transport dependent svc_sock structure. Signed-off-by: Tom Tucker --- include/linux/sunrpc/svc_xprt.h | 1 + include/linux/sunrpc/svcsock.h | 1 - net/sunrpc/svc_xprt.c | 1 + net/sunrpc/svcsock.c | 19 ++++++++----------- 4 files changed, 10 insertions(+), 12 deletions(-) diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index c9892d5..d5ef902 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -54,6 +54,7 @@ struct svc_xprt { struct svc_pool *xpt_pool; /* current pool iff queued */ struct svc_serv *xpt_server; /* service for transport */ atomic_t xpt_reserved; /* space on outq that is rsvd */ + struct mutex xpt_mutex; /* to serialize sending data */ }; int svc_reg_xprt_class(struct svc_xprt_class *); diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index ba41f11..41c2dfa 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -24,7 +24,6 @@ struct svc_sock { * sk_info_authunix */ struct list_head sk_deferred; /* deferred requests that need to * be revisted */ - struct mutex sk_mutex; /* to serialize sending data */ /* We keep the old state_change and data_ready CB's here */ void (*sk_ostate)(struct sock *); diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index bbdada7..7544102 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -112,6 +112,7 @@ void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt, xprt->xpt_server = serv; INIT_LIST_HEAD(&xprt->xpt_list); INIT_LIST_HEAD(&xprt->xpt_ready); + mutex_init(&xprt->xpt_mutex); } EXPORT_SYMBOL_GPL(svc_xprt_init); diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index d8df8c7..d546709 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -1637,15 +1637,13 @@ svc_drop(struct svc_rqst *rqstp) int svc_send(struct svc_rqst *rqstp) { - struct svc_sock *svsk; + struct svc_xprt *xprt; int len; struct xdr_buf *xb; - if ((svsk = rqstp->rq_sock) == NULL) { - printk(KERN_WARNING "NULL socket pointer in %s:%d\n", - __FILE__, __LINE__); + xprt = rqstp->rq_xprt; + if (!xprt) return -EFAULT; - } /* release the receive skb before sending the reply */ rqstp->rq_xprt->xpt_ops->xpo_release_rqst(rqstp); @@ -1656,13 +1654,13 @@ svc_send(struct svc_rqst *rqstp) xb->page_len + xb->tail[0].iov_len; - /* Grab svsk->sk_mutex to serialize outgoing data. */ - mutex_lock(&svsk->sk_mutex); - if (test_bit(XPT_DEAD, &svsk->sk_xprt.xpt_flags)) + /* Grab mutex to serialize outgoing data. */ + mutex_lock(&xprt->xpt_mutex); + if (test_bit(XPT_DEAD, &xprt->xpt_flags)) len = -ENOTCONN; else - len = svsk->sk_xprt.xpt_ops->xpo_sendto(rqstp); - mutex_unlock(&svsk->sk_mutex); + len = xprt->xpt_ops->xpo_sendto(rqstp); + mutex_unlock(&xprt->xpt_mutex); svc_sock_release(rqstp); if (len == -ECONNREFUSED || len == -ENOTCONN || len == -EAGAIN) @@ -1764,7 +1762,6 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv, svsk->sk_lastrecv = get_seconds(); spin_lock_init(&svsk->sk_lock); INIT_LIST_HEAD(&svsk->sk_deferred); - mutex_init(&svsk->sk_mutex); /* Initialize the socket */ if (sock->type == SOCK_DGRAM)