mm: hugetlb: fix stalls when a large number of hugepages are freed

Hi,

This patch will fix a long stalling when a large number of hugepages are freed.

* Changes in v2
- The subject is changed.
- Adding cond_resched_lock() in return_unused_surplus_pages(). Because when freeing a number of surplus pages, same problems happen.

Thanks,
Masayoshi Mizuma

Masayoshi Mizuma (1):
mm: hugetlb: fix stalling when a large number of hugepages are freed

 mm/hugetlb.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

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