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    SubjectRe: [PATCH v2 5/5] mm/page_alloc: Only call pgdat_set_deferred_range when the system boots
    On Thu 19-07-18 15:27:40, osalvador@techadventures.net wrote:
    > From: Oscar Salvador <osalvador@suse.de>
    >
    > We should only care about deferred initialization when booting.

    Again why is this worth doing?

    > Signed-off-by: Oscar Salvador <osalvador@suse.de>
    > ---
    > mm/page_alloc.c | 3 ++-
    > 1 file changed, 2 insertions(+), 1 deletion(-)
    >
    > diff --git a/mm/page_alloc.c b/mm/page_alloc.c
    > index d77bc2a7ec2c..5911b64a88ab 100644
    > --- a/mm/page_alloc.c
    > +++ b/mm/page_alloc.c
    > @@ -6419,7 +6419,8 @@ void __paginginit free_area_init_node(int nid, unsigned long *zones_size,
    > zones_size, zholes_size);
    >
    > alloc_node_mem_map(pgdat);
    > - pgdat_set_deferred_range(pgdat);
    > + if (system_state == SYSTEM_BOOTING)
    > + pgdat_set_deferred_range(pgdat);
    >
    > free_area_init_core(pgdat);
    > }
    > --
    > 2.13.6
    >

    --
    Michal Hocko
    SUSE Labs

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