linux-kernel - [PATCH 1/4] mm/hugeltb: remove redundant VM_BUG_ON() in region

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Message-ID: <20210402093249.25137-2-linmiaohe@huawei.com>
Date:   Fri, 2 Apr 2021 05:32:46 -0400
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <mike.kravetz@...cle.com>
CC:     <n-horiguchi@...jp.nec.com>, <hillf.zj@...baba-inc.com>,
        <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 1/4] mm/hugeltb: remove redundant VM_BUG_ON() in region_add()

The same VM_BUG_ON() check is already done in the callee. Remove this extra
one to simplify the code slightly.

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

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c22111f3da20..a03a50b7c410 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -556,7 +556,6 @@ static long region_add(struct resv_map *resv, long f, long t,
 	resv->adds_in_progress -= in_regions_needed;
 
 	spin_unlock(&resv->lock);
-	VM_BUG_ON(add < 0);
 	return add;
 }
 
-- 
2.19.1