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| author | David S. Miller <davem@davemloft.net> | 2013-10-28 00:11:22 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-28 00:11:22 -0400 |
| commit | 1f2cd845d3827412e82bf26dde0abca332ede402 (patch) | |
| tree | 370a0880f1fb5381925f8f602b2ba99f3904856f /drivers/net/bonding/bond_alb.c | |
| parent | 6384a4d0dcf9e28f5aa5e0c8a7e58e7b4df19e68 (diff) | |
| download | linux-1f2cd845d3827412e82bf26dde0abca332ede402.tar.gz linux-1f2cd845d3827412e82bf26dde0abca332ede402.tar.bz2 linux-1f2cd845d3827412e82bf26dde0abca332ede402.zip | |
Revert "Merge branch 'bonding_monitor_locking'"
This reverts commit 4d961a101e032b4bf223b279b4b35bc77576f5a8, reversing
changes made to a00f6fcc7d0c62a91768d9c4ccba4c7d64fbbce3.
Revert bond locking changes, they cause regressions and Veaceslav Falico
doesn't like how the commit messages were done at all.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding/bond_alb.c')
| -rw-r--r-- | drivers/net/bonding/bond_alb.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c index 5d79f5e529e0..02872405d35d 100644 --- a/drivers/net/bonding/bond_alb.c +++ b/drivers/net/bonding/bond_alb.c @@ -1495,13 +1495,11 @@ void bond_alb_monitor(struct work_struct *work) struct list_head *iter; struct slave *slave; - if (!rtnl_trylock()) - goto re_arm; + read_lock(&bond->lock); if (!bond_has_slaves(bond)) { bond_info->tx_rebalance_counter = 0; bond_info->lp_counter = 0; - rtnl_unlock(); goto re_arm; } @@ -1550,6 +1548,16 @@ void bond_alb_monitor(struct work_struct *work) if (bond_info->primary_is_promisc && (++bond_info->rlb_promisc_timeout_counter >= RLB_PROMISC_TIMEOUT)) { + /* + * dev_set_promiscuity requires rtnl and + * nothing else. Avoid race with bond_close. + */ + read_unlock(&bond->lock); + if (!rtnl_trylock()) { + read_lock(&bond->lock); + goto re_arm; + } + bond_info->rlb_promisc_timeout_counter = 0; /* If the primary was set to promiscuous mode @@ -1558,6 +1566,9 @@ void bond_alb_monitor(struct work_struct *work) */ dev_set_promiscuity(bond->curr_active_slave->dev, -1); bond_info->primary_is_promisc = 0; + + rtnl_unlock(); + read_lock(&bond->lock); } if (bond_info->rlb_rebalance) { @@ -1580,9 +1591,10 @@ void bond_alb_monitor(struct work_struct *work) } } - rtnl_unlock(); re_arm: queue_delayed_work(bond->wq, &bond->alb_work, alb_delta_in_ticks); + + read_unlock(&bond->lock); } /* assumption: called before the slave is attached to the bond |