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/linux-6.3-rc2/mm/
A Drmap.c496 unsigned long anon_mapping; in folio_get_anon_vma() local
499 anon_mapping = (unsigned long)READ_ONCE(folio->mapping); in folio_get_anon_vma()
500 if ((anon_mapping & PAGE_MAPPING_FLAGS) != PAGE_MAPPING_ANON) in folio_get_anon_vma()
505 anon_vma = (struct anon_vma *) (anon_mapping - PAGE_MAPPING_ANON); in folio_get_anon_vma()
542 unsigned long anon_mapping; in folio_lock_anon_vma_read() local
545 anon_mapping = (unsigned long)READ_ONCE(folio->mapping); in folio_lock_anon_vma_read()
546 if ((anon_mapping & PAGE_MAPPING_FLAGS) != PAGE_MAPPING_ANON) in folio_lock_anon_vma_read()
551 anon_vma = (struct anon_vma *) (anon_mapping - PAGE_MAPPING_ANON); in folio_lock_anon_vma_read()

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