usr
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src
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kernels
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3.10.0-1160.139.1.el7.tuxcare.els4.x86_64
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include
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linux
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crush
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mapper.h
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#ifndef CEPH_CRUSH_MAPPER_H #define CEPH_CRUSH_MAPPER_H /* * CRUSH functions for find rules and then mapping an input to an * output set. * * LGPL2 */ #include "crush.h" extern int crush_find_rule(const struct crush_map *map, int ruleset, int type, int size); int crush_do_rule(const struct crush_map *map, int ruleno, int x, int *result, int result_max, const __u32 *weight, int weight_max, void *cwin, const struct crush_choose_arg *choose_args); /* * Returns the exact amount of workspace that will need to be used * for a given combination of crush_map and result_max. The caller can * then allocate this much on its own, either on the stack, in a * per-thread long-lived buffer, or however it likes. */ static inline size_t crush_work_size(const struct crush_map *map, int result_max) { return map->working_size + result_max * 3 * sizeof(__u32); } void crush_init_workspace(const struct crush_map *map, void *v); #endif
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