[PATCH 4/4] hugetlb: Remove redundant VM_BUG_ON() in add_reservation_in_range()

[Baolin Wang <baolin.wang@linux.alibaba.com>]

When calling hugetlb_resv_map_add(), we've guaranteed that the parameter
'to' is always larger than 'from', so it never returns a negative value
from hugetlb_resv_map_add(). Thus remove the redundant VM_BUG_ON().

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
 mm/hugetlb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 5922629..166cfa1 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -446,7 +446,6 @@ static long add_reservation_in_range(struct resv_map *resv, long f, long t,
 		add += hugetlb_resv_map_add(resv, rg, last_accounted_offset,
 					    t, h, h_cg, regions_needed);
 
-	VM_BUG_ON(add < 0);
 	return add;
 }
 
-- 
1.8.3.1