Summaries: 01 - removes the use of zone_end_pfn as a local var name. 02 - adds zone_end_pfn(), zone_is_initialized(), zone_is_empty() and zone_spans_pfn() 03 - adds a VM_BUG using zone_is_initialized() in __free_one_page() 04 - add ensure_zone_is_initialized() (for memory_hotplug) 05 - use the above addition. 06 - add pgdat_end_pfn() and pgdat_is_empty() 07,08,09,10,11,12,16,17 - use the new helpers 13 - avoid repeating checks for section in page flags by adding a define. 14 - memory hotplug: factor out zone+pgdat growth. 15 - add debugging message to VM_BUG check. As a general concern: spanned_pages & start_pfn (in pgdat & zone) are supposed to be locked (via a seqlock) when read (due to changes to them via memory_hotplug), but very few (only 1?) of their users appear to actually lock them. -- include/linux/mm.h | 8 ++++-- include/linux/mmzone.h | 34 ++++++++++++++++++++++--- mm/compaction.c | 10 ++++---- mm/kmemleak.c | 5 ++-- mm/memory_hotplug.c | 68 ++++++++++++++++++++++++++++---------------------- mm/page_alloc.c | 31 +++++++++++++---------- mm/vmstat.c | 2 +- 7 files changed, 100 insertions(+), 58 deletions(-) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>