Without a hugetlb_instantiation_mutex, if parallel fault occur, we can
fail to allocate a hugepage, because many threads dequeue a hugepage
to handle a fault of same address. This makes reserved pool shortage
just for a little while and this cause faulting thread who is ensured
to have enough
Without a hugetlb_instantiation_mutex, if parallel fault occur, we can
fail to allocate a hugepage, because many threads dequeue a hugepage
to handle a fault of same address. This makes reserved pool shortage
just for a little while and this cause faulting thread who is ensured
to have enough
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