Commit 4027149a authored Apr 01, 2020 by Baoquan He Committed by Linus Torvalds Apr 02, 2020

mm/sparse.c: allocate memmap preferring the given node



When allocating memmap for hot added memory with the classic sparse, the
specified 'nid' is ignored in populate_section_memmap().

While in allocating memmap for the classic sparse during boot, the node
given by 'nid' is preferred.  And VMEMMAP prefers the node of 'nid' in
both boot stage and memory hot adding.  So seems no reason to not respect
the node of 'nid' for the classic sparse when hot adding memory.

Use kvmalloc_node instead to use the passed in 'nid'.

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Link: http://lkml.kernel.org/r/20200316125625.GH3486@MiWiFi-R3L-srv


Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 3af776f6

mm/sparse.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -664,8 +664,8 @@ static void free_map_bootmem(struct page *memmap)
		struct page * __meminit populate_section_memmap(unsigned long pfn,
		unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
		{
		return kvmalloc(array_size(sizeof(struct page),
		PAGES_PER_SECTION), GFP_KERNEL);
		return kvmalloc_node(array_size(sizeof(struct page),
		PAGES_PER_SECTION), GFP_KERNEL, nid);
		}

		static void depopulate_section_memmap(unsigned long pfn, unsigned long nr_pages,

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