diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-05-19 12:24:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-05-20 00:33:18 -0400 |
| commit | 449f4544267e73d5db372971da63634707c32299 (patch) | |
| tree | acee6de13f34c179ec46ef7f8a49e66b229f4460 /net/core | |
| parent | 034cfe48d0efc248ba4b725e3a94b95e76fbc5d3 (diff) | |
| download | linux-0-day-449f4544267e73d5db372971da63634707c32299.tar.gz linux-0-day-449f4544267e73d5db372971da63634707c32299.tar.xz | |
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/core')
| -rw-r--r-- | net/core/dev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 155de2094e71f..d94537914a715 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); } |