Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932908Ab2KZR7U (ORCPT ); Mon, 26 Nov 2012 12:59:20 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:47498 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932873Ab2KZRGT (ORCPT ); Mon, 26 Nov 2012 12:06:19 -0500 From: Herton Ronaldo Krzesinski To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Alex Elder , Herton Ronaldo Krzesinski Subject: [PATCH 104/270] libceph: don't use bio_iter as a flag Date: Mon, 26 Nov 2012 14:56:34 -0200 Message-Id: <1353949160-26803-105-git-send-email-herton.krzesinski@canonical.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1353949160-26803-1-git-send-email-herton.krzesinski@canonical.com> References: <1353949160-26803-1-git-send-email-herton.krzesinski@canonical.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2317 Lines: 64 3.5.7u1 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Elder commit abdaa6a849af1d63153682c11f5bbb22dacb1f6b upstream. Recently a bug was fixed in which the bio_iter field in a ceph message was not being properly re-initialized when a message got re-transmitted: commit 43643528cce60ca184fe8197efa8e8da7c89a037 Author: Yan, Zheng rbd: Clear ceph_msg->bio_iter for retransmitted message We are now only initializing the bio_iter field when we are about to start to write message data (in prepare_write_message_data()), rather than every time we are attempting to write any portion of the message data (in write_partial_msg_pages()). This means we no longer need to use the msg->bio_iter field as a flag. So just don't do that any more. Trust prepare_write_message_data() to ensure msg->bio_iter is properly initialized, every time we are about to begin writing (or re-writing) a message's bio data. Signed-off-by: Alex Elder Reviewed-by: Sage Weil Signed-off-by: Herton Ronaldo Krzesinski --- net/ceph/messenger.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index b83c963..d47305a 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -604,7 +604,7 @@ static void prepare_write_message_data(struct ceph_connection *con) else con->out_msg_pos.page_pos = 0; #ifdef CONFIG_BLOCK - if (msg->bio && !msg->bio_iter) + if (msg->bio) init_bio_iter(msg->bio, &msg->bio_iter, &msg->bio_seg); #endif con->out_msg_pos.data_pos = 0; @@ -672,10 +672,6 @@ static void prepare_write_message(struct ceph_connection *con) m->hdr.seq = cpu_to_le64(++con->out_seq); m->needs_out_seq = false; } -#ifdef CONFIG_BLOCK - else - m->bio_iter = NULL; -#endif dout("prepare_write_message %p seq %lld type %d len %d+%d+%d %d pgs\n", m, con->out_seq, le16_to_cpu(m->hdr.type), -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/