diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index eee5ba7509c1..d80e1868e570 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3552,30 +3552,47 @@ void __init add_active_range(unsigned int nid, unsigned long start_pfn, } /** - * shrink_active_range - Shrink an existing registered range of PFNs + * remove_active_range - Shrink an existing registered range of PFNs * @nid: The node id the range is on that should be shrunk - * @new_end_pfn: The new PFN of the range + * @start_pfn: The new PFN of the range + * @end_pfn: The new PFN of the range * * i386 with NUMA use alloc_remap() to store a node_mem_map on a local node. * The map is kept near the end physical page range that has already been * registered. This function allows an arch to shrink an existing registered * range. */ -void __init shrink_active_range(unsigned int nid, unsigned long new_end_pfn) +void __init remove_active_range(unsigned int nid, unsigned long start_pfn, + unsigned long end_pfn) { int i, j; int removed = 0; + printk(KERN_DEBUG "remove_active_range (%d, %lu, %lu)\n", + nid, start_pfn, end_pfn); + /* Find the old active region end and shrink */ for_each_active_range_index_in_nid(i, nid) { - if (early_node_map[i].start_pfn >= new_end_pfn) { + if (early_node_map[i].start_pfn >= start_pfn && + early_node_map[i].end_pfn <= end_pfn) { /* clear it */ + early_node_map[i].start_pfn = 0; early_node_map[i].end_pfn = 0; removed = 1; continue; } - if (early_node_map[i].end_pfn > new_end_pfn) { - early_node_map[i].end_pfn = new_end_pfn; + if (early_node_map[i].start_pfn < start_pfn && + early_node_map[i].end_pfn > start_pfn) { + unsigned long temp_end_pfn = early_node_map[i].end_pfn; + early_node_map[i].end_pfn = start_pfn; + if (temp_end_pfn > end_pfn) + add_active_range(nid, end_pfn, temp_end_pfn); + continue; + } + if (early_node_map[i].start_pfn >= start_pfn && + early_node_map[i].end_pfn > end_pfn && + early_node_map[i].start_pfn < end_pfn) { + early_node_map[i].start_pfn = end_pfn; continue; } } |