rhashtable: Move future_tbl into struct bucket_table

This patch moves future_tbl to open up the possibility of having
multiple rehashes on the same table.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index ed7562ad4ca0..1695378b3c5b 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -56,6 +56,7 @@ struct rhash_head {
  * @locks: Array of spinlocks protecting individual buckets
  * @walkers: List of active walkers
  * @rcu: RCU structure for freeing the table
+ * @future_tbl: Table under construction during rehashing
  * @buckets: size * hash buckets
  */
 struct bucket_table {
@@ -68,6 +69,8 @@ struct bucket_table {
         struct list_head        walkers;
         struct rcu_head         rcu;
 
+        struct bucket_table __rcu *future_tbl;
+
         struct rhash_head __rcu *buckets[] ____cacheline_aligned_in_smp;
 };
 
@@ -105,7 +108,6 @@ struct rhashtable_params {
 /**
  * struct rhashtable - Hash table handle
  * @tbl: Bucket table
- * @future_tbl: Table under construction during expansion/shrinking
  * @nelems: Number of elements in table
  * @p: Configuration parameters
  * @run_work: Deferred worker to expand/shrink asynchronously
@@ -114,7 +116,6 @@ struct rhashtable_params {
  */
 struct rhashtable {
         struct bucket_table __rcu       *tbl;
-        struct bucket_table __rcu       *future_tbl;
         atomic_t                        nelems;
         bool                            being_destroyed;
         struct rhashtable_params        p;