diff options
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/util.c b/mm/util.c index d5259b62f8d7..d41da54e8d83 100644 --- a/mm/util.c +++ b/mm/util.c @@ -344,10 +344,12 @@ struct address_space *page_mapping(struct page *page) } mapping = (unsigned long)page->mapping; - if (mapping & PAGE_MAPPING_FLAGS) + if ((unsigned long)mapping & PAGE_MAPPING_ANON) return NULL; - return page->mapping; + + return (void *)((unsigned long)mapping & ~PAGE_MAPPING_FLAGS); } +EXPORT_SYMBOL(page_mapping); int overcommit_ratio_handler(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, |