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| 50 | }; |
50 | }; |
| 51 | 51 | ||
| 52 | struct frame { |
52 | struct frame { |
| 53 | count_t refcount; /**< when == 0, the frame is in free list */ |
53 | count_t refcount; /**< when == 0, the frame is in free list */ |
| 54 | link_t link; /**< link to zone free list when refcount == 0 */ |
54 | link_t link; /**< link to zone free list when refcount == 0 */ |
| 55 | } __attribute__ ((packed)); |
55 | }; |
| 56 | 56 | ||
| 57 | extern spinlock_t zone_head_lock; /**< this lock protects zone_head list */ |
57 | extern spinlock_t zone_head_lock; /**< this lock protects zone_head list */ |
| 58 | extern link_t zone_head; /**< list of all zones in the system */ |
58 | extern link_t zone_head; /**< list of all zones in the system */ |
| 59 | 59 | ||
| 60 | extern void zone_init(void); |
60 | extern void zone_init(void); |