From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Gruenbacher Subject: [PATCH] rhashtable: Add rhashtable_lookup_get_insert_fast Date: Sat, 18 Mar 2017 00:36:15 +0100 Message-ID: <1489793775-25152-1-git-send-email-agruenba@redhat.com> Cc: netdev@vger.kernel.org, cluster-devel@redhat.com, Thomas Graf , "David S. Miller" , Herbert Xu To: linux-kernel@vger.kernel.org Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cluster-devel-bounces@redhat.com Errors-To: cluster-devel-bounces@redhat.com List-Id: netdev.vger.kernel.org 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 --- 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