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Re: [patch v2 -mm] mm, hugetlb: schedule when potentially allocating many hugepages

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  Re: [patch v2 -mm] mm, hugetlb: schedule when potentially allocating  many hugepages Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2017-07-06 08:10 +0200

#1682063 — Re: [patch v2 -mm] mm, hugetlb: schedule when potentially allocating many hugepages

On 06/10/2017 04:06 AM, David Rientjes wrote:
> A few hugetlb allocators loop while calling the page allocator and can
> potentially prevent rescheduling if the page allocator slowpath is not
> utilized.
> 
> Conditionally schedule when large numbers of hugepages can be allocated.
> 
> Signed-off-by: David Rientjes <rientjes@google.com>

Fixes a task which was getting hung while writing like 10000
hugepages (16MB on POWER8) into /proc/sys/vm/nr_hugepages.

Tested-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>

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