+#ifndef FIO_BITMAP_H
+#define FIO_BITMAP_H
+
+#include <inttypes.h>
+
+struct axmap;
+struct axmap *axmap_new(unsigned long nr_bits);
+void axmap_free(struct axmap *bm);
+
+void axmap_clear(struct axmap *axmap, uint64_t bit_nr);
+void axmap_set(struct axmap *axmap, uint64_t bit_nr);
+unsigned int axmap_set_nr(struct axmap *axmap, uint64_t bit_nr, unsigned int nr_bits);
+int axmap_isset(struct axmap *axmap, uint64_t bit_nr);
+uint64_t axmap_first_free(struct axmap *axmap);
+uint64_t axmap_next_free(struct axmap *axmap, uint64_t bit_nr);
+void axmap_reset(struct axmap *axmap);
+
+#endif