From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: [patch 035/155] mm/page-writeback.c: use VM_BUG_ON_PAGE in clear_page_dirty_for_io Date: Wed, 01 Apr 2020 21:05:00 -0700 Message-ID: <20200402040500.muLFLSj9h%akpm@linux-foundation.org> References: <20200401210155.09e3b9742e1c6e732f5a7250@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.29.99]:51520 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725789AbgDBEFB (ORCPT ); Thu, 2 Apr 2020 00:05:01 -0400 In-Reply-To: <20200401210155.09e3b9742e1c6e732f5a7250@linux-foundation.org> Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: akpm@linux-foundation.org, aneesh.kumar@linux.vnet.ibm.com, hch@lst.de, kirill.shutemov@linux.intel.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, pankaj.gupta.linux@gmail.com, torvalds@linux-foundation.org, willy@infradead.org From: "Matthew Wilcox (Oracle)" Subject: mm/page-writeback.c: use VM_BUG_ON_PAGE in clear_page_dirty_for_io Dumping the page information in this circumstance helps for debugging. Link: http://lkml.kernel.org/r/20200318140253.6141-7-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig Acked-by: Kirill A. Shutemov Cc: Aneesh Kumar K.V Cc: Pankaj Gupta Signed-off-by: Andrew Morton --- mm/page-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/page-writeback.c~mm-use-vm_bug_on_page-in-clear_page_dirty_for_io +++ a/mm/page-writeback.c @@ -2655,7 +2655,7 @@ int clear_page_dirty_for_io(struct 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; _