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Commit eca84933 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
Browse files

rhashtable: Use head_hashfn instead of obj_raw_hashfn 



Now that we don't have cross-table hashes, we no longer need to
keep the entire hash value so all users of obj_raw_hashfn can
use head_hashfn instead.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Acked-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8d2b1879

lib/rhashtable.c

+5 −7
Original line number Diff line number Diff line
@@ -403,7 +403,7 @@ static bool __rhashtable_insert(struct rhashtable *ht, struct rhash_head *obj, 
	rcu_read_lock();



	old_tbl = rht_dereference_rcu(ht->tbl, ht);

	hash = obj_raw_hashfn(ht, old_tbl, rht_obj(ht, obj));

	hash = head_hashfn(ht, old_tbl, obj);



	spin_lock_bh(bucket_lock(old_tbl, hash));
@@ -415,7 +415,7 @@ static bool __rhashtable_insert(struct rhashtable *ht, struct rhash_head *obj, 
	 */

	tbl = rht_dereference_rcu(ht->future_tbl, ht);

	if (tbl != old_tbl) {

		hash = obj_raw_hashfn(ht, tbl, rht_obj(ht, obj));

		hash = head_hashfn(ht, tbl, obj);

		spin_lock_nested(bucket_lock(tbl, hash), RHT_LOCK_NESTED);

	}
@@ -428,7 +428,6 @@ static bool __rhashtable_insert(struct rhashtable *ht, struct rhash_head *obj, 


	no_resize_running = tbl == old_tbl;



	hash = rht_bucket_index(tbl, hash);

	head = rht_dereference_bucket(tbl->buckets[hash], tbl, hash);



	if (rht_is_a_nulls(head))
@@ -444,11 +443,11 @@ static bool __rhashtable_insert(struct rhashtable *ht, struct rhash_head *obj, 


exit:

	if (tbl != old_tbl) {

		hash = obj_raw_hashfn(ht, tbl, rht_obj(ht, obj));

		hash = head_hashfn(ht, tbl, obj);

		spin_unlock(bucket_lock(tbl, hash));

	}



	hash = obj_raw_hashfn(ht, old_tbl, rht_obj(ht, obj));

	hash = head_hashfn(ht, old_tbl, obj);

	spin_unlock_bh(bucket_lock(old_tbl, hash));



	rcu_read_unlock();
@@ -487,9 +486,8 @@ static bool __rhashtable_remove(struct rhashtable *ht, 
	unsigned hash;

	bool ret = false;



	hash = obj_raw_hashfn(ht, tbl, rht_obj(ht, obj));

	hash = head_hashfn(ht, tbl, obj);

	lock = bucket_lock(tbl, hash);

	hash = rht_bucket_index(tbl, hash);



	spin_lock_bh(lock);