+ mm-use-vm_bug_on_page-in-clear_page_dirty_for_io.patch added to -mm tree

+ mm-use-vm_bug_on_page-in-clear_page_dirty_for_io.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/page-writeback.c: use VM_BUG_ON_PAGE in clear_page_dirty_for_io
has been added to the -mm tree.  Its filename is
     mm-use-vm_bug_on_page-in-clear_page_dirty_for_io.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-use-vm_bug_on_page-in-clear_page_dirty_for_io.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-use-vm_bug_on_page-in-clear_page_dirty_for_io.patch

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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
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) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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;
_

Patches currently in -mm which might be from willy@infradead.org are

mm-improve-dump_page-for-compound-pages.patch
mm-add-pagemaph-to-the-fine-documentation.patch
mm-use-vm_fault-error-code-directly.patch
mm-rename-arguments-to-find_subpage.patch
mm-check-pagetail-in-hpage_nr_pages-even-when-thp.patch
mm-optimise-find_subpage-for-thp.patch
mm-remove-config_transparent_huge_pagecache.patch
mm-use-vm_bug_on_page-in-clear_page_dirty_for_io.patch
mm-unexport-find_get_entry.patch
mm-rewrite-pagecache_get_page-documentation.patch
proc-inline-vma_stop-into-m_stop.patch
proc-remove-m_cache_vma.patch
proc-use-ppos-instead-of-m-version.patch
seq_file-remove-m-version.patch
proc-inline-m_next_vma-into-m_next.patch