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(parent: ab16ebf) | patch
net: introduce netif_addr_lock_nested() and call if when appropriate
authorJiri Pirko <jpirko@redhat.com>
Mon, 9 Jan 2012 06:36:54 +0000 (06:36 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 9 Jan 2012 20:46:58 +0000 (12:46 -0800)
commit2429f7ac2ef429378536d87fcbbf6f424aa5b47f
tree15e0fd0c42f6e10ede9f1cf84553c2a01e593d81tree | snapshot
parentab16ebf375f0513d6b0f5193de84186a3fc0c33bcommit | diff
net: introduce netif_addr_lock_nested() and call if when appropriate

dev_uc_sync() and dev_mc_sync() are acquiring netif_addr_lock for
destination device of synchronization. Since netif_addr_lock is
already held at the time for source device, this triggers lockdep
deadlock warning.

There's no way this deadlock can happen so use spin_lock_nested() to
silence the warning.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/netdevice.h diff | blob | history
net/core/dev_addr_lists.c diff | blob | history
John Crispins staging tree