From mboxrd@z Thu Jan 1 00:00:00 1970 From: Veaceslav Falico Subject: [PATCH] bonding: don't call update_speed_duplex() under spinlocks Date: Tue, 12 Mar 2013 17:31:32 +0100 Message-ID: <1363105892-3172-1-git-send-email-vfalico@redhat.com> Cc: vfalico@redhat.com, lkml@tlinx.org, eric.dumazet@gmail.com, fubar@us.ibm.com, jeffrey.t.kirsher@intel.com, xiyou.wangcong@gmail.com, andy@greyhouse.net To: netdev@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:25397 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755150Ab3CLQbr (ORCPT ); Tue, 12 Mar 2013 12:31:47 -0400 Sender: netdev-owner@vger.kernel.org List-ID: bond_update_speed_duplex() might sleep while calling underlying slave's routines. Move it out of atomic context in bond_enslave() and remove it from bond_miimon_commit() - it was introduced by commit 546add79, however when the slave interfaces go up/change state it's their responsibility to fire NETDEV_UP/NETDEV_CHANGE events so that bonding can properly update their speed. I've tested it on all combinations of ifup/ifdown, autoneg/speed/duplex changes, remote-controlled and local, on (not) MII-based cards. All changes are visible. Signed-off-by: Veaceslav Falico --- drivers/net/bonding/bond_main.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 8b4e96e..6bbd90e 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1746,6 +1746,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) bond_compute_features(bond); + bond_update_speed_duplex(new_slave); + read_lock(&bond->lock); new_slave->last_arp_rx = jiffies - @@ -1798,8 +1800,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) new_slave->link == BOND_LINK_DOWN ? "DOWN" : (new_slave->link == BOND_LINK_UP ? "UP" : "BACK")); - bond_update_speed_duplex(new_slave); - if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { /* if there is a primary slave, remember it */ if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { @@ -2374,8 +2374,6 @@ static void bond_miimon_commit(struct bonding *bond) bond_set_backup_slave(slave); } - bond_update_speed_duplex(slave); - pr_info("%s: link status definitely up for interface %s, %u Mbps %s duplex.\n", bond->dev->name, slave->dev->name, slave->speed, slave->duplex ? "full" : "half"); -- 1.7.1