[NEIGH]: Revert 'Fix race between neigh_parms_release and neightbl_fill_parms'

Commit 9cd40029423701c376391da59d2c6469672b4bed (Fix race between
neigh_parms_release and neightbl_fill_parms) introduced device
reference counting regressions for several people, see:

	http://bugzilla.kernel.org/show_bug.cgi?id=9778

for example.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index cc8a2f1..29b8ee4 100644 (file)
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1316,6 +1316,8 @@ void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms)
                        *p = parms->next;
                        parms->dead = 1;
                        write_unlock_bh(&tbl->lock);
+                       if (parms->dev)
+                               dev_put(parms->dev);
                        call_rcu(&parms->rcu_head, neigh_rcu_free_parms);
                        return;
                }
@@ -1326,8 +1328,6 @@ void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms)
 
 void neigh_parms_destroy(struct neigh_parms *parms)
 {
-       if (parms->dev)
-               dev_put(parms->dev);
        kfree(parms);
 }