From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Gruenbacher Date: Fri, 17 Mar 2017 15:14:54 +0100 Subject: [Cluster-devel] [PATCH 1/3] rhashtable: Add rhashtable_lookup_get_insert_fast Message-ID: <1489760096-14974-1-git-send-email-agruenba@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Add rhashtable_lookup_get_insert_fast for fixed keys, similar to rhashtable_lookup_get_insert_key for explicit keys. Signed-off-by: Andreas Gruenbacher Acked-by: Herbert Xu Cc: "David S. Miller" --- include/linux/rhashtable.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h index 092292b..e507290 100644 --- a/include/linux/rhashtable.h +++ b/include/linux/rhashtable.h @@ -916,6 +916,28 @@ static inline int rhashtable_lookup_insert_fast( } /** + * rhashtable_lookup_get_insert_fast - lookup and insert object into hash table + * @ht: hash table + * @obj: pointer to hash head inside object + * @params: hash table parameters + * + * Just like rhashtable_lookup_insert_fast(), but this function returns the + * object if it exists, NULL if it did not and the insertion was successful, + * and an ERR_PTR otherwise. + */ +static inline void *rhashtable_lookup_get_insert_fast( + struct rhashtable *ht, struct rhash_head *obj, + const struct rhashtable_params params) +{ + const char *key = rht_obj(ht, obj); + + BUG_ON(ht->p.obj_hashfn); + + return __rhashtable_insert_fast(ht, key + ht->p.key_offset, obj, params, + false); +} + +/** * rhashtable_lookup_insert_key - search and insert object to hash table * with explicit key * @ht: hash table -- 2.7.4