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#define BUDDY_SYSTEM_INNER_BLOCK    0xff
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#define BUDDY_SYSTEM_INNER_BLOCK    0xff
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struct buddy_system_operations {
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struct buddy_system_operations {
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    link_t *(* find_buddy)(link_t *);               /**< Return pointer to left-side or right-side buddy for block passed as argument. */
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    link_t *(* find_buddy)(link_t *);               /**< Return pointer to left-side or right-side buddy for block passed as argument. */
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    link_t *(* bisect)(link_t *);                   /**< Bisect the block passed as argument and return pointer to the new right-side buddy. */
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    link_t *(* bisect)(link_t *);                   /**< Bisect the block passed as argument and return pointer to the new right-side buddy. */
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    link_t *(* coalesce)(link_t *, link_t *);           /**< Coalesce to buddies into a bigger block. */
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    link_t *(* coalesce)(link_t *, link_t *);           /**< Coalesce two buddies into a bigger block. */
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    void (*set_order)(link_t *, __u8);              /**< Set order of block passed as argument. */
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    void (*set_order)(link_t *, __u8);              /**< Set order of block passed as argument. */
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    __u8 (*get_order)(link_t *);                    /**< Return order of block passed as argument. */
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    __u8 (*get_order)(link_t *);                    /**< Return order of block passed as argument. */
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};
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};
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struct buddy_system {
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struct buddy_system {