3.16.50-rc1 review patch.  If anyone has any objections, please let me know.

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From: Feras Daoud <fera...@mellanox.com>

commit d2e46fccc3e3d73a741efe433f00960331280696 upstream.

Set IPOIB_NEIGH_TBL_FLUSH bit after initializing the neighbor
flushed completion, otherwise the garbage collector may signal
a completion while it is not initialized yet.

Fixes: b63b70d87741 ("IPoIB: Use a private hash table for path lookup in xmit 
path")
Signed-off-by: Feras Daoud <fera...@mellanox.com>
Signed-off-by: Alex Vesker <va...@mellanox.com>
Signed-off-by: Leon Romanovsky <l...@kernel.org>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/infiniband/ulp/ipoib/ipoib_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1235,6 +1235,7 @@ static void ipoib_flush_neighs(struct ip
        int i, wait_flushed = 0;
 
        init_completion(&priv->ntbl.flushed);
+       set_bit(IPOIB_NEIGH_TBL_FLUSH, &priv->flags);
 
        spin_lock_irqsave(&priv->lock, flags);
 
@@ -1279,7 +1280,6 @@ static void ipoib_neigh_hash_uninit(stru
 
        ipoib_dbg(priv, "ipoib_neigh_hash_uninit\n");
        init_completion(&priv->ntbl.deleted);
-       set_bit(IPOIB_NEIGH_TBL_FLUSH, &priv->flags);
 
        /* Stop GC if called at init fail need to cancel work */
        stopped = test_and_set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags);

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