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Searched refs:FOLL_PIN (Results 1 – 5 of 5) sorted by relevance

/linux-6.6.21/Documentation/core-api/
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-6.6.21/mm/
Dgup.c130 if (WARN_ON_ONCE((flags & (FOLL_GET | FOLL_PIN)) == 0)) in try_grab_folio()
191 if (flags & FOLL_PIN) { in gup_put_folio()
237 else if (flags & FOLL_PIN) { in try_grab_page()
275 gup_put_folio(page_folio(page), 1, FOLL_PIN); in unpin_user_page()
398 gup_put_folio(folio, nr, FOLL_PIN); in unpin_user_pages_dirty_lock()
438 gup_put_folio(folio, nr, FOLL_PIN); in unpin_user_page_range_dirty_lock()
456 gup_put_folio(folio, nr, FOLL_PIN); in unpin_user_pages_lockless()
486 gup_put_folio(folio, nr, FOLL_PIN); in unpin_user_pages()
590 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_page_pte()
591 (FOLL_PIN | FOLL_GET))) in follow_page_pte()
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Dinternal.h960 FOLL_PIN = 1 << 19, enumerator
995 if ((flags & (FOLL_WRITE | FOLL_PIN)) != FOLL_PIN) in gup_must_unshare()
Dhuge_memory.c1047 if (!(flags & (FOLL_GET | FOLL_PIN))) in follow_devmap_pmd()
1204 if (!(flags & (FOLL_GET | FOLL_PIN))) in follow_devmap_pud()
1471 VM_BUG_ON_PAGE((flags & FOLL_PIN) && PageAnon(page) && in follow_trans_huge_pmd()
/linux-6.6.21/Documentation/kernel-hacking/
Dfalse-sharing.rst171 - Commit 292648ac5cf1 ("mm: gup: allow FOLL_PIN to scale in SMP")