On Fri, Sep 27, 2019 at 03:47:03PM -0400, Qian Cai wrote: > On architectures like s390, arch_free_page() could mark the page unused > (set_page_unused()) and any access later would trigger a kernel panic. > Fix it by moving arch_free_page() after all possible accessing calls. Looks like Power also uses the hook. Have you check that this patch will not affect Power? -- Kirill A. Shutemov