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garp: remove last synchronize_rcu() call

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When removing last vlan from a device, garp_uninit_applicant() calls
synchronize_rcu() to make sure no user can still manipulate struct
garp_applicant before we free it.

Use call_rcu() instead, as a step to further net_device dismantle
optimizations.

Add the temporary garp_cleanup_module() function to make sure no pending
call_rcu() are left at module unload time [ this will be removed when
kfree_rcu() is available ]

Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2011-05-12 17:46:56 -04:00 • committed by David S. Miller
commit f607a15800
2 changed files with 13 additions and 2 deletions
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1
include/net/garp.h
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@ -104,6 +104,7 @@ struct garp_applicant {
struct sk_buff_head queue;
struct sk_buff *pdu;
struct rb_root gid;
struct rcu_head rcu;
};
struct garp_port {