RE: [mm 4.15-rc8] Random oopses under memory pressure.

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> Both are real page. But why do you expect pages to be 64-byte alinged?
> Both are aligned to 64-bit as they suppose to be IIUC.

On a 64-bit kernel sizeof struct page == 64 (after much work by people to
trim out excess stuff).  So I thought we made sure to align the base address
of blocks of "struct page" so that every one neatly fits into one cache line.

-Tony

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