[141/262] hugetlb: remove redundant VM_BUG_ON() in add_reservation_in_range()

Commit Message

Andrew Morton Nov. 5, 2021, 8:42 p.m. UTC

From: Baolin Wang <[e-mail]>
Subject: hugetlb: remove redundant VM_BUG_ON() in add_reservation_in_range()

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().

Link: https://lkml.kernel.org/r/2b5[e-mail]
Signed-off-by: Baolin Wang <[e-mail]>
Reviewed-by: Mike Kravetz <[e-mail]>
Cc: Michal Hocko <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/hugetlb.c |    1 -
 1 file changed, 1 deletion(-)

Patch

--- a/mm/hugetlb.c~hugetlb-remove-redundant-vm_bug_on-in-add_reservation_in_range
+++ a/mm/hugetlb.c
@@ -445,7 +445,6 @@  static long add_reservation_in_range(str
 		add += hugetlb_resv_map_add(resv, rg, last_accounted_offset,
 					    t, h, h_cg, regions_needed);
 
-	VM_BUG_ON(add < 0);
 	return add;
 }