On Fri, Dec 22, 2017 at 04:48:18PM +0800, Baoquan He wrote:

In commit

  83e3c48729 "mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y"

mem_section is allocated at runtime to save memory. While it allocates
the first dimension of array with sizeof(struct mem_section). It costs 
extra memory, should be sizeof(struct mem_section*).

Fix it.

Signed-off-by: Baoquan He <redacted>
Tested-by: Dave Young <redacted>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <redacted>
Cc: Atsushi Kumagai <redacted>
Cc: linux-mm@kvack.org

Ughh. Sorry.

Acked-by: Kirill A. Shutemov <redacted>

Please queue it to stable.

-- 
 Kirill A. Shutemov

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