- if (flags & RMAP_EXCLUSIVE) - SetPageAnonExclusive(page); - /* While PTE-mapping a THP we have a PMD and a PTE mapping. */ - VM_WARN_ON_FOLIO((atomic_read(&page->_mapcount) > 0 || - (folio_test_large(folio) && folio_entire_mapcount(folio) > 1)) && - PageAnonExclusive(page), folio); + + if (flags & RMAP_EXCLUSIVE) { + switch (mode) { + case RMAP_MODE_PTE: + for (i = 0; i < nr_pages; i++) + SetPageAnonExclusive(page + i); + break; + case RMAP_MODE_PMD: + SetPageAnonExclusive(page);Just to check; I suppose only setting this on the head is ok, because it's an exclusive mapping and therefore by definition it can only be mapped by pmd?
Yes. And when PTE-remapping, we will push the flag to all tail pages. No change in behavior :)
-- Cheers, David / dhildenb
