diff options
Diffstat (limited to 'mm/truncate.c')
| -rw-r--r-- | mm/truncate.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/mm/truncate.c b/mm/truncate.c index 76d8fcd89bd003..79570045071c07 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -78,8 +78,22 @@ static void truncate_folio_batch_exceptionals(struct address_space *mapping, if (dax_mapping(mapping)) { for (i = j; i < nr; i++) { - if (xa_is_value(fbatch->folios[i])) + if (xa_is_value(fbatch->folios[i])) { + /* + * File systems should already have called + * dax_break_layout_entry() to remove all DAX + * entries while holding a lock to prevent + * establishing new entries. Therefore we + * shouldn't find any here. + */ + WARN_ON_ONCE(1); + + /* + * Delete the mapping so truncate_pagecache() + * doesn't loop forever. + */ dax_delete_mapping_entry(mapping, indices[i]); + } } goto out; } |