1 #ifndef CEPH_CRUSH_MAPPER_H
2 #define CEPH_CRUSH_MAPPER_H
3 
4 /*
5  * CRUSH functions for find rules and then mapping an input to an
6  * output set.
7  *
8  * LGPL2
9  */
10 
11 #include "crush.h"
12 
13 extern int crush_find_rule(const struct crush_map *map, int ruleset, int type, int size);
14 extern int crush_do_rule(const struct crush_map *map,
15 			 int ruleno,
16 			 int x, int *result, int result_max,
17 			 int forcefeed,    /* -1 for none */
18 			 const __u32 *weights);
19 
20 #endif
21