ted code, but the change makes it
> more
> robust.
>
> Suggested-by: Michal Hocko
> Signed-off-by: Vlastimil Babka
> ---
Acked-by: Hillf Danton
true. There is no such known context, but let's
> play it safe and make __alloc_pages_direct_compact() robust for cases where
> PF_MEMALLOC is already set.
>
> Fixes: a8161d1ed609 ("mm, page_alloc: restructure direct compaction handling
> in slowpath")
> Reported-
>
> The select(2) syscall performs a kmalloc(size, GFP_KERNEL) where size grows
> with the number of fds passed. We had a customer report page allocation
> failures of order-4 for this allocation. This is a costly order, so it might
> easily fail, as the VM expects such allocation to have a lower-
