diff options
| -rw-r--r-- | mm/rmap.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 2ff17b9aabd9..d44ff516a208 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1099,22 +1099,20 @@ int pfn_mkclean_range(unsigned long pfn, unsigned long nr_pages, pgoff_t pgoff, */ void page_move_anon_rmap(struct page *page, struct vm_area_struct *vma) { - struct anon_vma *anon_vma = vma->anon_vma; - struct page *subpage = page; - - page = compound_head(page); + void *anon_vma = vma->anon_vma; + struct folio *folio = page_folio(page); - VM_BUG_ON_PAGE(!PageLocked(page), page); + VM_BUG_ON_FOLIO(!folio_test_locked(folio), folio); VM_BUG_ON_VMA(!anon_vma, vma); - anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON; + anon_vma += PAGE_MAPPING_ANON; /* * Ensure that anon_vma and the PAGE_MAPPING_ANON bit are written * simultaneously, so a concurrent reader (eg folio_referenced()'s * folio_test_anon()) will not see one without the other. */ - WRITE_ONCE(page->mapping, (struct address_space *) anon_vma); - SetPageAnonExclusive(subpage); + WRITE_ONCE(folio->mapping, anon_vma); + SetPageAnonExclusive(page); } /** |