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    link_t *(* find_buddy)(buddy_system_t *, link_t *);     /**< Return pointer to left-side or right-side buddy for block passed as argument. */
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    link_t *(* find_buddy)(buddy_system_t *, link_t *);     /**< Return pointer to left-side or right-side buddy for block passed as argument. */
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    link_t *(* bisect)(buddy_system_t *, link_t *);         /**< Bisect the block passed as argument and return pointer to the new right-side buddy. */
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    link_t *(* bisect)(buddy_system_t *, link_t *);         /**< Bisect the block passed as argument and return pointer to the new right-side buddy. */
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    link_t *(* coalesce)(buddy_system_t *, link_t *, link_t *); /**< Coalesce two buddies into a bigger block. */
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    link_t *(* coalesce)(buddy_system_t *, link_t *, link_t *); /**< Coalesce two buddies into a bigger block. */
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    void (*set_order)(buddy_system_t *, link_t *, __u8);        /**< Set order of block passed as argument. */
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    void (*set_order)(buddy_system_t *, link_t *, __u8);        /**< Set 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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    __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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};
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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;
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    __u8 max_order;
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    link_t *order;
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    link_t *order;
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    void *data;             /**< Pointer to be used by the implementation. */
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    void *data;             /**< Pointer to be used by the implementation. */
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};
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};
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extern buddy_system_t *buddy_system_create(__u8 max_order, buddy_system_operations_t *op, void *data);
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extern buddy_system_t *buddy_system_create(__u8 max_order, buddy_system_operations_t *op, void *data);
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extern link_t *buddy_system_alloc(buddy_system_t *b, __u8 i);
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extern link_t *buddy_system_alloc(buddy_system_t *b, __u8 i);
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extern bool buddy_system_can_alloc(buddy_system_t *b, __u8 order);
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extern void buddy_system_free(buddy_system_t *b, link_t *block);
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extern void buddy_system_free(buddy_system_t *b, link_t *block);
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#endif
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#endif