On Mon, Sep 29, 2014 at 09:52:24PM -0700, Hugh Dickins wrote:
> On Mon, 15 Sep 2014, Naoya Horiguchi wrote:
> > When running the test which causes the race as shown in the previous patch,
> > we can hit the BUG "get_page() on refcount 0 page" in hugetlb_fault().
>
> Two minor comments...
>
> > @@
On Mon, 15 Sep 2014, Naoya Horiguchi wrote:
> When running the test which causes the race as shown in the previous patch,
> we can hit the BUG "get_page() on refcount 0 page" in hugetlb_fault().
Two minor comments...
> @@ -3192,22 +3208,19 @@ int hugetlb_fault(struct mm_struct *mm, struct
> vm_a
When running the test which causes the race as shown in the previous patch,
we can hit the BUG "get_page() on refcount 0 page" in hugetlb_fault().
This race happens when pte turns into migration entry just after the first
check of is_hugetlb_entry_migration() in hugetlb_fault() passed with false.
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