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Commit 8f2484bd authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
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rhashtable: Use SINGLE_DEPTH_NESTING



We only nest one level deep there is no need to roll our own
subclasses.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent eddee5ba
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+2 −7
Original line number Diff line number Diff line
@@ -33,11 +33,6 @@
/* Base bits plus 1 bit for nulls marker */
#define HASH_RESERVED_SPACE	(RHT_BASE_BITS + 1)

enum {
	RHT_LOCK_NORMAL,
	RHT_LOCK_NESTED,
};

/* The bucket lock is selected based on the hash and protects mutations
 * on a group of hash buckets.
 *
@@ -231,7 +226,7 @@ static int rhashtable_rehash_one(struct rhashtable *ht, unsigned old_hash)

	new_bucket_lock = bucket_lock(new_tbl, new_hash);

	spin_lock_nested(new_bucket_lock, RHT_LOCK_NESTED);
	spin_lock_nested(new_bucket_lock, SINGLE_DEPTH_NESTING);
	head = rht_dereference_bucket(new_tbl->buckets[new_hash],
				      new_tbl, new_hash);

@@ -405,7 +400,7 @@ static bool __rhashtable_insert(struct rhashtable *ht, struct rhash_head *obj,
	tbl = rht_dereference_rcu(ht->future_tbl, ht);
	if (tbl != old_tbl) {
		hash = head_hashfn(ht, tbl, obj);
		spin_lock_nested(bucket_lock(tbl, hash), RHT_LOCK_NESTED);
		spin_lock_nested(bucket_lock(tbl, hash), SINGLE_DEPTH_NESTING);
	}

	if (compare &&