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The bond slave list may change when the monitor is running, the slave list is no longer protected by bond->lock, only protected by rtnl lock(), so we have 3 ways to modify it: 1.add bond_master_upper_dev_link() and bond_upper_dev_unlink() in bond->lock, but it is unsafe to call call_netdevice_notifiers() in write lock. 2.remove unused bond->lock for monitor function, only use the existing rtnl lock(). 3.use rcu_read_lock() to protect it, of course, it will transform bond_for_each_slave to bond_for_each_slave_rcu() and performance is better, but in slow path, it is ignored. so I remove the bond->lock and move the rtnl lock to protect the whole monitor function. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| bond_3ad.c | ||
| bond_3ad.h | ||
| bond_alb.c | ||
| bond_alb.h | ||
| bond_debugfs.c | ||
| bond_main.c | ||
| bond_netlink.c | ||
| bond_options.c | ||
| bond_procfs.c | ||
| bond_sysfs.c | ||
| bonding.h | ||
| Makefile | ||