linux-kernel - [PATCH v2 1/5] mm/migrate.c: remove unnecessary VM_BUG_ON_PAGE on putback_movable

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Message-ID: <20210323135405.65059-2-linmiaohe@huawei.com>
Date:   Tue, 23 Mar 2021 09:54:01 -0400
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <jglisse@...hat.com>, <shy828301@...il.com>, <aquini@...hat.com>,
        <david@...hat.com>, <apopple@...dia.com>,
        <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH v2 1/5] mm/migrate.c: remove unnecessary VM_BUG_ON_PAGE on putback_movable_page()

The !PageLocked() check is implicitly done in PageMovable(). Remove this
explicit one.

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

diff --git a/mm/migrate.c b/mm/migrate.c
index 47df0df8f21a..facec65c7374 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -145,7 +145,6 @@ void putback_movable_page(struct page *page)
 {
 	struct address_space *mapping;
 
-	VM_BUG_ON_PAGE(!PageLocked(page), page);
 	VM_BUG_ON_PAGE(!PageMovable(page), page);
 	VM_BUG_ON_PAGE(!PageIsolated(page), page);
 
-- 
2.19.1