diff options
Diffstat (limited to 'mm/memremap.c')
| -rw-r--r-- | mm/memremap.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/memremap.c b/mm/memremap.c index c33bcd0398c9..2b92e97cb25b 100644 --- a/mm/memremap.c +++ b/mm/memremap.c @@ -460,6 +460,15 @@ void free_zone_device_page(struct page *page) mem_cgroup_uncharge(page_folio(page)); /* + * Note: we don't expect anonymous compound pages yet. Once supported + * and we could PTE-map them similar to THP, we'd have to clear + * PG_anon_exclusive on all tail pages. + */ + VM_BUG_ON_PAGE(PageAnon(page) && PageCompound(page), page); + if (PageAnon(page)) + __ClearPageAnonExclusive(page); + + /* * When a device managed page is freed, the page->mapping field * may still contain a (stale) mapping value. For example, the * lower bits of page->mapping may still identify the page as an |