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authorEric Dumazet <eric.dumazet@gmail.com>2011-05-19 12:24:16 +0000
committerDavid S. Miller <davem@davemloft.net>2011-05-20 00:33:18 -0400
commit449f4544267e73d5db372971da63634707c32299 (patch)
treeacee6de13f34c179ec46ef7f8a49e66b229f4460 /net
parent034cfe48d0efc248ba4b725e3a94b95e76fbc5d3 (diff)
downloadop-kernel-dev-449f4544267e73d5db372971da63634707c32299.zip
op-kernel-dev-449f4544267e73d5db372971da63634707c32299.tar.gz
macvlan: remove one synchronize_rcu() call
When one macvlan device is dismantled, we can avoid one synchronize_rcu() call done after deletion from hash list, since caller will perform a synchronize_net() call after its ndo_stop() call. Add a new netdev->dismantle field to signal this dismantle intent. Reduces RTNL hold time. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/dev.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 155de20..d945379 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5126,7 +5126,7 @@ static void rollback_registered_many(struct list_head *head)
list_del(&dev->unreg_list);
continue;
}
-
+ dev->dismantle = true;
BUG_ON(dev->reg_state != NETREG_REGISTERED);
}
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