The patch titled memory hotplug: align memmap to page size has been added to the -mm tree. Its filename is memory-hotplug-align-memmap-to-page-size.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: memory hotplug: align memmap to page size From: Yasunori Goto <y-goto@xxxxxxxxxxxxxx> To free memmap easier, this patch aligns it to page size. Bootmem allocater may mix some objects in one pages. It's not good for freeing memmap of memory hot-remove. Signed-off-by: Yasunori Goto <y-goto@xxxxxxxxxxxxxx> Cc: Badari Pulavarty <pbadari@xxxxxxxxxx> Cc: Yinghai Lu <yhlu.kernel@xxxxxxxxx> Cc: Yasunori Goto <y-goto@xxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/sparse.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN mm/sparse.c~memory-hotplug-align-memmap-to-page-size mm/sparse.c --- a/mm/sparse.c~memory-hotplug-align-memmap-to-page-size +++ a/mm/sparse.c @@ -263,8 +263,8 @@ struct page __init *sparse_mem_map_popul if (map) return map; - map = alloc_bootmem_node(NODE_DATA(nid), - sizeof(struct page) * PAGES_PER_SECTION); + map = alloc_bootmem_pages_node(NODE_DATA(nid), + PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION)); return map; } #endif /* !CONFIG_SPARSEMEM_VMEMMAP */ _ Patches currently in -mm which might be from y-goto@xxxxxxxxxxxxxx are hotplug-memory-remove-generic-__remove_pages-support.patch powerpc-hotplug-memory-notifications-for-ppc.patch powerpc-update-lmb-for-hotplug-memory-add-remove.patch powerpc-provide-walk_memory_resource-for-ppc.patch block-fix-memory-hotplug-and-bouncing-in-block-layer.patch mm-make-mem_map-allocation-continuous-v2.patch mm-fix-alloc_bootmem_core-to-use-fast-searching-for-all-nodes.patch mm-offset-align-in-alloc_bootmem.patch mm-make-reserve_bootmem-can-crossed-the-nodes.patch memory-hotplug-register-section-node-id-to-free.patch memory-hotplug-align-memmap-to-page-size.patch memory-hotplug-make-alloc_bootmem_section.patch memory-hotplugallocate-usemap-on-the-section-with-pgdat.patch memory-hotplug-free-memmaps-allocated-by-bootmem.patch ipc-scale-msgmni-to-the-amount-of-lowmem.patch ipc-scale-msgmni-to-the-number-of-ipc-namespaces.patch ipc-define-the-slab_memory_callback-priority-as-a-constant.patch ipc-recompute-msgmni-on-memory-add--remove.patch ipc-invoke-the-ipcns-notifier-chain-as-a-work-item.patch ipc-recompute-msgmni-on-ipc-namespace-creation-removal.patch ipc-do-not-recompute-msgmni-anymore-if-explicitly-set-by-user.patch ipc-re-enable-msgmni-automatic-recomputing-msgmni-if-set-to-negative.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html