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Subject[PATCH] mm/hugetlb: remove redundant reservation check condition in alloc_huge_page()
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If there is no reservation corresponding to a vma, map_chg is always != 0,
i.e. we can not meet the condition where a vma does not have reservation
while map_chg = 0.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/hugetlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 4f2c92ddbca4..36c3646fa55f 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2311,7 +2311,7 @@ struct page *alloc_huge_page(struct vm_area_struct *vma,

/* If this allocation is not consuming a reservation, charge it now.
*/
- deferred_reserve = map_chg || avoid_reserve || !vma_resv_map(vma);
+ deferred_reserve = map_chg || avoid_reserve;
if (deferred_reserve) {
ret = hugetlb_cgroup_charge_cgroup_rsvd(
idx, pages_per_huge_page(h), &h_cg);
--
2.19.1
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