diff options
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 44 |
1 files changed, 10 insertions, 34 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 03a8825c5620..c3977ce28061 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1384,28 +1384,6 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) return ret; } -/* Mark all sections offline and remove all free pages from the buddy. */ -static int -offline_isolated_pages_cb(unsigned long start, unsigned long nr_pages, - void *data) -{ - unsigned long *offlined_pages = (unsigned long *)data; - - *offlined_pages += __offline_isolated_pages(start, start + nr_pages); - return 0; -} - -/* - * Check all pages in range, recorded as memory resource, are isolated. - */ -static int -check_pages_isolated_cb(unsigned long start_pfn, unsigned long nr_pages, - void *data) -{ - return test_pages_isolated(start_pfn, start_pfn + nr_pages, - MEMORY_OFFLINE); -} - static int __init cmdline_parse_movable_node(char *p) { movable_node_enabled = true; @@ -1492,7 +1470,7 @@ static int count_system_ram_pages_cb(unsigned long start_pfn, int __ref offline_pages(unsigned long start_pfn, unsigned long nr_pages) { const unsigned long end_pfn = start_pfn + nr_pages; - unsigned long pfn, system_ram_pages = 0, offlined_pages = 0; + unsigned long pfn, system_ram_pages = 0; int ret, node, nr_isolate_pageblock; unsigned long flags; struct zone *zone; @@ -1590,9 +1568,7 @@ int __ref offline_pages(unsigned long start_pfn, unsigned long nr_pages) reason = "failure to dissolve huge pages"; goto failed_removal_isolated; } - /* check again */ - ret = walk_system_ram_range(start_pfn, end_pfn - start_pfn, - NULL, check_pages_isolated_cb); + /* * per-cpu pages are drained in start_isolate_page_range, but if * there are still pages that are not free, make sure that we @@ -1605,15 +1581,15 @@ int __ref offline_pages(unsigned long start_pfn, unsigned long nr_pages) * because has_unmovable_pages explicitly checks for * PageBuddy on freed pages on other zones. */ + ret = test_pages_isolated(start_pfn, end_pfn, MEMORY_OFFLINE); if (ret) drain_all_pages(zone); } while (ret); - /* Ok, all of our target is isolated. - We cannot do rollback at this point. */ - walk_system_ram_range(start_pfn, end_pfn - start_pfn, - &offlined_pages, offline_isolated_pages_cb); - pr_info("Offlined Pages %ld\n", offlined_pages); + /* Mark all sections offline and remove free pages from the buddy. */ + __offline_isolated_pages(start_pfn, end_pfn); + pr_info("Offlined Pages %ld\n", nr_pages); + /* * Onlining will reset pagetype flags and makes migrate type * MOVABLE, so just need to decrease the number of isolated @@ -1624,11 +1600,11 @@ int __ref offline_pages(unsigned long start_pfn, unsigned long nr_pages) spin_unlock_irqrestore(&zone->lock, flags); /* removal success */ - adjust_managed_page_count(pfn_to_page(start_pfn), -offlined_pages); - zone->present_pages -= offlined_pages; + adjust_managed_page_count(pfn_to_page(start_pfn), -nr_pages); + zone->present_pages -= nr_pages; pgdat_resize_lock(zone->zone_pgdat, &flags); - zone->zone_pgdat->node_present_pages -= offlined_pages; + zone->zone_pgdat->node_present_pages -= nr_pages; pgdat_resize_unlock(zone->zone_pgdat, &flags); init_per_zone_wmark_min(); |