linux-kernel - [PATCH v2 03/25] mm: Use VM_BUG_ON_PAGE in clear_page_dirty_for

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Date:   Tue, 11 Feb 2020 20:18:23 -0800
From:   Matthew Wilcox <willy@...radead.org>
To:     linux-fsdevel@...r.kernel.org, linux-mm@...ck.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 03/25] mm: Use VM_BUG_ON_PAGE in clear_page_dirty_for_io

From: "Matthew Wilcox (Oracle)" <willy@...radead.org>

Dumping the page information in this circumstance helps for debugging.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 mm/page-writeback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 2caf780a42e7..9173c25cf8e6 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2655,7 +2655,7 @@ int clear_page_dirty_for_io(struct page *page)
 	struct address_space *mapping = page_mapping(page);
 	int ret = 0;
 
-	BUG_ON(!PageLocked(page));
+	VM_BUG_ON_PAGE(!PageLocked(page), page);
 
 	if (mapping && mapping_cap_account_dirty(mapping)) {
 		struct inode *inode = mapping->host;
-- 
2.25.0