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Searched refs:FOLL_PIN (Results 1 – 3 of 3) sorted by relevance

/linux/Documentation/core-api/
H A Dpin_user_pages.rst18 Basic description of FOLL_PIN
21 FOLL_PIN and FOLL_LONGTERM are flags that can be passed to the get_user_pages*()
22 ("gup") family of functions. FOLL_PIN has significant interactions and
25 FOLL_PIN is internal to gup, meaning that it should not appear at the gup call
39 FOLL_PIN and FOLL_GET are mutually exclusive for a given gup call. However,
41 FOLL_PIN and FOLL_GET. It's just the call site that needs to choose one or the
44 The FOLL_PIN implementation is nearly the same as FOLL_GET, except that FOLL_PIN
47 FOLL_PIN is a prerequisite to FOLL_LONGTERM. Another way of saying that is,
48 FOLL_LONGTERM is a specific case, more restrictive case of FOLL_PIN.
53 For these pin_user_pages*() functions, FOLL_PIN is OR'd in with whatever gup
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/linux/mm/
H A Dgup.c104 if (flags & FOLL_PIN) { in gup_put_folio()
151 else if (flags & FOLL_PIN) { in try_grab_folio()
188 gup_put_folio(page_folio(page), 1, FOLL_PIN); in unpin_user_page()
201 gup_put_folio(folio, 1, FOLL_PIN); in unpin_folio()
324 gup_put_folio(folio, nr, FOLL_PIN); in unpin_user_pages_dirty_lock()
370 gup_put_folio(folio, nr, FOLL_PIN); in unpin_user_page_range_dirty_lock()
388 gup_put_folio(folio, nr, FOLL_PIN); in gup_fast_unpin_user_pages()
422 gup_put_folio(folio, nr, FOLL_PIN); in unpin_user_pages()
436 gup_put_folio(folio, npages, FOLL_PIN); in unpin_user_folio()
468 gup_put_folio(folios[i], j - i, FOLL_PIN); in unpin_folios()
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H A Dinternal.h1323 FOLL_PIN = 1 << 19, enumerator
1332 #define INTERNAL_GUP_FLAGS (FOLL_TOUCH | FOLL_TRIED | FOLL_REMOTE | FOLL_PIN | \
1364 if ((flags & (FOLL_WRITE | FOLL_PIN)) != FOLL_PIN) in gup_must_unshare()