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    __u8 (*get_order)(buddy_system_t *, link_t *);          /**< Return order of block passed as argument. */
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    __u8 (*get_order)(buddy_system_t *, link_t *);          /**< Return order of block passed as argument. */
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    void (*mark_busy)(buddy_system_t *, link_t *);          /**< Mark block as busy */
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    void (*mark_busy)(buddy_system_t *, link_t *);          /**< Mark block as busy */
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    void (*mark_available)(buddy_system_t *, link_t *);         /**< Mark block as busy */
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    void (*mark_available)(buddy_system_t *, link_t *);         /**< Mark block as busy */
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    /** Find parent of block that has given order  */
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    /** Find parent of block that has given order  */
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    link_t *(* find_block)(buddy_system_t *, link_t *, __u8);
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    link_t *(* find_block)(buddy_system_t *, link_t *, __u8);
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    void (* print_id)(buddy_system_t *, link_t *);
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};
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};
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struct buddy_system {
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struct buddy_system {
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    __u8 max_order;             /**< Maximal order of block which can be stored by buddy system. */
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    __u8 max_order;             /**< Maximal order of block which can be stored by buddy system. */
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    link_t *order;
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    link_t *order;