On Fri, Sep 22, 2023 at 03:09:20PM +0800, Yajun Deng wrote: > - __init_single_page(page, pfn, zone, nid); > + __init_single_page(page, pfn, zone, nid, true, false); So Linus has just had a big rant about not doing bool flags to functions. And in particular _multiple_ bool flags to functions. ie this should be: #define INIT_PAGE_COUNT (1 << 0) #define INIT_PAGE_RESERVED (1 << 1) __init_single_page(page, pfn, zone, nid, INIT_PAGE_COUNT); or something similar. I have no judgement on the merits of this patch so far. Do you have performance numbers for each of these patches? Some of them seem quite unlikely to actually help, at least on a machine which is constrained by cacheline fetches.