| 44,16 → 44,15 |
|---|
| __address base; /**< physical address of the first frame in the frames array */ |
| frame_t *frames; /**< array of frame_t structures in this zone */ |
| link_t free_head; /**< list of free frame_t structures */ |
| link_t busy_head; /**< list of busy frame_t structures */ |
| count_t free_count; /**< number of frame_t structures in free list */ |
| count_t busy_count; /**< number of frame_t structures in busy list */ |
| count_t busy_count; /**< number of frame_t structures not in free list */ |
| int flags; |
| }; |
| |
| struct frame { |
| count_t refcount; /**< when > 0, the frame is in busy list, otherwise the frame is in free list */ |
| link_t link; /**< link either to frame_zone free or busy list */ |
| }; |
| count_t refcount; /**< when == 0, the frame is in free list */ |
| link_t link; /**< link to zone free list when refcount == 0 */ |
| } __attribute__ ((packed)); |
| |
| extern spinlock_t zone_head_lock; /**< this lock protects zone_head list */ |
| extern link_t zone_head; /**< list of all zones in the system */ |