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    SubjectRe: [PATCH] mm:memcg: add __GFP_NOWARN in __memcg_schedule_kmem_cache_create
    On Wed 18-04-18 06:31:39, Matthew Wilcox wrote:
    > On Wed, Apr 18, 2018 at 11:29:12AM +0900, Minchan Kim wrote:
    > > If there are heavy memory pressure, page allocation with __GFP_NOWAIT
    > > fails easily although it's order-0 request.
    > > I got below warning 9 times for normal boot.
    > >
    > > Let's not make user scared.
    >
    > Actually, can you explain why it's OK if this fails? As I understand this
    > code, we'll fail to create a kmalloc cache for this memcg. What problems
    > does that cause?

    See http://lkml.kernel.org/r/20180418072002.GN17484@dhcp22.suse.cz

    --
    Michal Hocko
    SUSE Labs

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