From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757921Ab2KVV3d (ORCPT ); Thu, 22 Nov 2012 16:29:33 -0500 Received: from mail.kernel.org ([198.145.19.201]:49605 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755189Ab2KVSkj (ORCPT ); Thu, 22 Nov 2012 13:40:39 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , alan@lxorguk.ukuu.org.uk, Alex Elder , Sage Weil Subject: [ 064/171] ceph: messenger: change read_partial() to take "end" arg Date: Wed, 21 Nov 2012 16:40:10 -0800 Message-Id: <20121122004039.798760009@linuxfoundation.org> X-Mailer: git-send-email 1.8.0.197.g5a90748 In-Reply-To: <20121122004033.298367941@linuxfoundation.org> References: <20121122004033.298367941@linuxfoundation.org> User-Agent: quilt/0.60-2.1.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Elder (cherry picked from commit fd51653f78cf40a0516e521b6de22f329c5bad8d) Make the second argument to read_partial() be the ending input byte position rather than the beginning offset it now represents. This amounts to moving the addition "to + size" into the caller. Signed-off-by: Alex Elder Reviewed-by: Sage Weil Signed-off-by: Greg Kroah-Hartman --- net/ceph/messenger.c | 60 ++++++++++++++++++++++++++++++++------------------- 1 file changed, 38 insertions(+), 22 deletions(-) --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -992,10 +992,8 @@ static int prepare_read_message(struct c static int read_partial(struct ceph_connection *con, - int to, int size, void *object) + int end, int size, void *object) { - int end = to + size; - while (con->in_base_pos < end) { int left = end - con->in_base_pos; int have = size - left; @@ -1013,40 +1011,52 @@ static int read_partial(struct ceph_conn */ static int read_partial_banner(struct ceph_connection *con) { - int ret, to = 0; + int size; + int end; + int ret; dout("read_partial_banner %p at %d\n", con, con->in_base_pos); /* peer's banner */ - ret = read_partial(con, to, strlen(CEPH_BANNER), con->in_banner); + size = strlen(CEPH_BANNER); + end = size; + ret = read_partial(con, end, size, con->in_banner); if (ret <= 0) goto out; - to += strlen(CEPH_BANNER); - ret = read_partial(con, to, sizeof(con->actual_peer_addr), - &con->actual_peer_addr); + + size = sizeof (con->actual_peer_addr); + end += size; + ret = read_partial(con, end, size, &con->actual_peer_addr); if (ret <= 0) goto out; - to += sizeof(con->actual_peer_addr); - ret = read_partial(con, to, sizeof(con->peer_addr_for_me), - &con->peer_addr_for_me); + + size = sizeof (con->peer_addr_for_me); + end += size; + ret = read_partial(con, end, size, &con->peer_addr_for_me); if (ret <= 0) goto out; + out: return ret; } static int read_partial_connect(struct ceph_connection *con) { - int ret, to = 0; + int size; + int end; + int ret; dout("read_partial_connect %p at %d\n", con, con->in_base_pos); - ret = read_partial(con, to, sizeof(con->in_reply), &con->in_reply); + size = sizeof (con->in_reply); + end = size; + ret = read_partial(con, end, size, &con->in_reply); if (ret <= 0) goto out; - to += sizeof(con->in_reply); - ret = read_partial(con, to, le32_to_cpu(con->in_reply.authorizer_len), - con->auth_reply_buf); + + size = le32_to_cpu(con->in_reply.authorizer_len); + end += size; + ret = read_partial(con, end, size, con->auth_reply_buf); if (ret <= 0) goto out; @@ -1495,8 +1505,10 @@ static int process_connect(struct ceph_c */ static int read_partial_ack(struct ceph_connection *con) { - return read_partial(con, 0, sizeof(con->in_temp_ack), - &con->in_temp_ack); + int size = sizeof (con->in_temp_ack); + int end = size; + + return read_partial(con, end, size, &con->in_temp_ack); } @@ -1629,8 +1641,9 @@ static int read_partial_message_bio(stru static int read_partial_message(struct ceph_connection *con) { struct ceph_msg *m = con->in_msg; + int size; + int end; int ret; - int to; unsigned front_len, middle_len, data_len; bool do_datacrc = !con->msgr->nocrc; int skip; @@ -1640,7 +1653,9 @@ static int read_partial_message(struct c dout("read_partial_message con %p msg %p\n", con, m); /* header */ - ret = read_partial(con, 0, sizeof (con->in_hdr), &con->in_hdr); + size = sizeof (con->in_hdr); + end = size; + ret = read_partial(con, end, size, &con->in_hdr); if (ret <= 0) return ret; @@ -1755,8 +1770,9 @@ static int read_partial_message(struct c } /* footer */ - to = sizeof (m->hdr); - ret = read_partial(con, to, sizeof (m->footer), &m->footer); + size = sizeof (m->footer); + end += size; + ret = read_partial(con, end, size, &m->footer); if (ret <= 0) return ret;