Getting struct page for userspace pointer

Hello, Is there a way to get the corresponding struct page* for an userspace pointer *if it exists*? I am basically looking for a "passive" version of get_user_pages() that does not lock the page and does not put the page into memory if it's swapped out. Thanks, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C