linux-kernel - [PATCH] mm: mempolicy: use VM_BUG_ON_VMA in queue_pages_test

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Date:   Wed, 15 Jan 2020 14:09:25 +0800
From:   Yang Shi <yang.shi@...ux.alibaba.com>
To:     akpm@...ux-foundation.org
Cc:     yang.shi@...ux.alibaba.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm: mempolicy: use VM_BUG_ON_VMA in queue_pages_test_walk()

The VM_BUG_ON() is already used by queue_pages_test_walk(), it sounds
better to dump more debug information by using VM_BUG_ON_VMA() to help
debugging.

Signed-off-by: Yang Shi <yang.shi@...ux.alibaba.com>
---
 mm/mempolicy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 067cf7d..801d45d 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -621,7 +621,7 @@ static int queue_pages_test_walk(unsigned long start, unsigned long end,
 	unsigned long flags = qp->flags;
 
 	/* range check first */
-	VM_BUG_ON((vma->vm_start > start) || (vma->vm_end < end));
+	VM_BUG_ON_VMA((vma->vm_start > start) || (vma->vm_end < end), vma);
 
 	if (!qp->first) {
 		qp->first = vma;
-- 
1.8.3.1