Summaries: 1 - avoid repeating checks for section in page flags by adding a define. 2 - add & switch to zone_end_pfn() and zone_spans_pfn() 3 - adds zone_is_initialized() & zone_is_empty() 4 - adds a VM_BUG using zone_is_initialized() in __free_one_page() 5 - add pgdat_end_pfn() and pgdat_is_empty() 6 - add debugging message to VM_BUG check. 7 - add ensure_zone_is_initialized() (for memory_hotplug) 8 - use the above addition in memory_hotplug 9 - use pgdat_end_pfn() 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. -- Since v1: - drop zone+pgdat growth factoring (I use this in some WIP code to resign the NUMA node a page belongs to, will send with that patchset) - merge zone_end_pfn() & zone_spans_pfn() introduction & usage - split zone_is_initialized() & zone_is_empty() out from the above. - add a missing semicolon include/linux/mm.h | 8 ++++++-- include/linux/mmzone.h | 34 +++++++++++++++++++++++++++++---- mm/compaction.c | 10 +++++----- mm/kmemleak.c | 5 ++--- mm/memory_hotplug.c | 52 ++++++++++++++++++++++++++------------------------ mm/page_alloc.c | 31 +++++++++++++++++------------- mm/vmstat.c | 2 +- 7 files changed, 89 insertions(+), 53 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>