| 944,11 → 944,11 |
|---|
| |
| /** Free a frame. |
| * |
| * Find respective frame structure for supplied addr. |
| * Find respective frame structure for supplied PFN. |
| * Decrement frame reference count. |
| * If it drops to zero, move the frame structure to free list. |
| * |
| * @param frame Frame no to be freed. |
| * @param frame Frame number to be freed. |
| */ |
| void frame_free(pfn_t pfn) |
| { |
| 969,8 → 969,34 |
|---|
| interrupts_restore(ipl); |
| } |
| |
| /** Add reference to frame. |
| * |
| * Find respective frame structure for supplied PFN and |
| * increment frame reference count. |
| * |
| * @param frame Frame no to be freed. |
| */ |
| void frame_reference_add(pfn_t pfn) |
| { |
| ipl_t ipl; |
| zone_t *zone; |
| frame_t *frame; |
| |
| ipl = interrupts_disable(); |
| |
| /* |
| * First, find host frame zone for addr. |
| */ |
| zone = find_zone_and_lock(pfn,NULL); |
| ASSERT(zone); |
| |
| frame = &zone->frames[pfn-zone->base]; |
| frame->refcount++; |
| |
| spinlock_unlock(&zone->lock); |
| interrupts_restore(ipl); |
| } |
| |
| /** Mark given range unavailable in frame zones */ |
| void frame_mark_unavailable(pfn_t start, count_t count) |
| { |