diff options
Diffstat (limited to 'src/hashtables.c')
| -rw-r--r-- | src/hashtables.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/hashtables.c b/src/hashtables.c index db97f7e..a01a899 100644 --- a/src/hashtables.c +++ b/src/hashtables.c @@ -97,13 +97,16 @@ search_unused_slot: return entry->index; } -void index_hashtable_replace(struct index_hashtable *table, struct index_hashtable_entry *old, struct index_hashtable_entry *new) +bool index_hashtable_replace(struct index_hashtable *table, struct index_hashtable_entry *old, struct index_hashtable_entry *new) { + if (unlikely(hlist_unhashed(&old->index_hash))) + return false; spin_lock_bh(&table->lock); new->index = old->index; hlist_replace_rcu(&old->index_hash, &new->index_hash); INIT_HLIST_NODE(&old->index_hash); spin_unlock_bh(&table->lock); + return true; } void index_hashtable_remove(struct index_hashtable *table, struct index_hashtable_entry *entry) |