struct cds_ja_range *cds_ja_range_lookup(struct cds_ja *ja, uint64_t key);
+struct cds_ja_range *cds_ja_range_lock(struct cds_ja_range *range);
+
+void cds_ja_range_unlock(struct cds_ja_range *range);
+
struct cds_ja_range *cds_ja_range_add(struct cds_ja *ja,
uint64_t start, /* inclusive */
uint64_t end); /* inclusive */