Commit 9d99217a authored Apr 28, 2008 by Yasunori Goto Committed by Linus Torvalds Apr 28, 2008

memory hotplug: align memmap to page size

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@jp.fujitsu.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 04753278

mm/sparse.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -273,8 +273,8 @@ struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid)
		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 */

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