rtnetlink: small rtnl lock pushdown

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instead of rtnl lock/unload at the top level, push it down
to the called function.

This is just an intermediate step, next commit switches protection
of the rtnl_link ops table to rcu, in which case (for dumps) the
rtnl lock is acquired only by the netlink dumper infrastructure
(current lock/unlock/dump/lock/unlock rtnl sequence becomes
 rcu lock/rcu unlock/dump).

Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Florian Westphal 2017-08-09 20:41:50 +02:00 • committed by David S. Miller

parent 019a316992

commit 0cc09020ae

1 changed files with 13 additions and 6 deletions

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19

net/core/rtnetlink.c

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