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

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Date:   Sat, 20 Mar 2021 05:36:57 -0400
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <jglisse@...hat.com>, <shy828301@...il.com>,
        <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 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..e4ca5ef508ea 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -146,7 +146,6 @@ 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);
 
 	mapping = page_mapping(page);
-- 
2.19.1