[PATCH v9 3/7] mm,hugetlb: Drop clearing of flag from prep_new_huge_page

[Oscar Salvador]

Pages allocated via the page allocator or CMA get its private field cleared
by means of post_alloc_hook().
Pages allocated during boot, that is directly from the memblock allocator,
get cleared by paging_init()->..->memmap_init_zone->..->__init_single_page()
before any memblock allocation.

Based on this ground, let us remove the clearing of the flag from
prep_new_huge_page() as it is not needed.
This was a leftover from 6c0371490140 ("hugetlb: convert PageHugeFreed
to HPageFreed flag"). Previously the explicit clearing was necessary
because compound allocations do not get this initialization
(see prep_compound_page).

Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
---
 mm/hugetlb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 54d81d5947ed..2cb9fa79cbaa 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1493,7 +1493,6 @@ static void prep_new_huge_page(struct hstate *h, struct page *page, int nid)
 	spin_lock_irq(&hugetlb_lock);
 	h->nr_huge_pages++;
 	h->nr_huge_pages_node[nid]++;
-	ClearHPageFreed(page);
 	spin_unlock_irq(&hugetlb_lock);
 }
 
-- 
2.16.3