Messages in this thread Patch in this message | | | From | Wang Nan <> | Subject | [PATCH 2/5] memory-hotplug: x86_32: suitable memory should go to ZONE_MOVABLE | Date | Fri, 18 Jul 2014 15:56:00 +0800 |
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This patch add new memory to ZONE_MOVABLE if movable zone is setup and lower than newly added memory for x86_32.
Signed-off-by: Wang Nan <wangnan0@huawei.com> --- arch/x86/mm/init_32.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index e395048..dd69833 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -826,9 +826,15 @@ int arch_add_memory(int nid, u64 start, u64 size) { struct pglist_data *pgdata = NODE_DATA(nid); struct zone *zone = pgdata->node_zones + ZONE_HIGHMEM; + struct zone *movable_zone = pgdat->node_zones + ZONE_MOVABLE; unsigned long start_pfn = start >> PAGE_SHIFT; unsigned long nr_pages = size >> PAGE_SHIFT; + if (!zone_is_empty(movable_zone)) + if (zone_spans_pfn(movable_zone, start_pfn) || + (zone_end_pfn(movable_zone) <= start_pfn)) + zone = movable_zone; + return __add_pages(nid, zone, start_pfn, nr_pages); } -- 1.8.4
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