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Herbert Xu 58ec3b4db9 net: Fix netdev_run_todo dead-lock ... Benjamin Thery tracked down a bug that explains many instances of the error unregister_netdevice: waiting for %s to become free. Usage count = %d It turns out that netdev_run_todo can dead-lock with itself if a second instance of it is run in a thread that will then free a reference to the device waited on by the first instance. The problem is really quite silly. We were trying to create parallelism where none was required. As netdev_run_todo always follows a RTNL section, and that todo tasks can only be added with the RTNL held, by definition you should only need to wait for the very ones that you've added and be done with it. There is no need for a second mutex or spinlock. This is exactly what the following patch does. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>		17 years ago
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Makefile	…
datagram.c	net: skb_copy_datagram_from_iovec()	17 years ago
dev.c	net: Fix netdev_run_todo dead-lock	17 years ago
dev_mcast.c	…
dst.c	…
ethtool.c	…
fib_rules.c	…
filter.c	…
flow.c	…
gen_estimator.c	Revert "pkt_sched: Protect gen estimators under est_lock."	17 years ago
gen_stats.c	…
iovec.c	…
kmap_skb.h	…
link_watch.c	…
neighbour.c	net: fix missing pneigh entries in the neighbor seq_file code	17 years ago
net-sysfs.c	…
net-sysfs.h	…
net_namespace.c	…
netevent.c	…
netpoll.c	…
pktgen.c	pktgen: prevent pktgen from using bad tx queue	17 years ago
request_sock.c	…
rtnetlink.c	net: Fix netdev_run_todo dead-lock	17 years ago
scm.c	…
skbuff.c	net: Preserve netfilter attributes in skb_gso_segment using __copy_skb_header	17 years ago
sock.c	…
stream.c	…
sysctl_net_core.c	…
user_dma.c	…
utils.c	…