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

/Linux-v5.15/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-v5.15/mm/
Dgup.c132 else if (flags & FOLL_PIN) { in try_grab_compound_head()
177 if (flags & FOLL_PIN) { in put_compound_head()
211 if (!(flags & (FOLL_GET | FOLL_PIN))) in try_grab_page()
228 put_compound_head(compound_head(page), 1, FOLL_PIN); in unpin_user_page()
341 put_compound_head(head, ntails, FOLL_PIN); in unpin_user_pages_dirty_lock()
377 put_compound_head(head, ntails, FOLL_PIN); in unpin_user_page_range_dirty_lock()
406 put_compound_head(head, ntails, FOLL_PIN); in unpin_user_pages()
484 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_page_pte()
485 (FOLL_PIN | FOLL_GET))) in follow_page_pte()
519 if (!page && pte_devmap(pte) && (flags & (FOLL_GET | FOLL_PIN))) { in follow_page_pte()
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Dhuge_memory.c994 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_devmap_pmd()
995 (FOLL_PIN | FOLL_GET))) in follow_devmap_pmd()
1013 if (!(flags & (FOLL_GET | FOLL_PIN))) in follow_devmap_pmd()
1162 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_devmap_pud()
1163 (FOLL_PIN | FOLL_GET))) in follow_devmap_pud()
1180 if (!(flags & (FOLL_GET | FOLL_PIN))) in follow_devmap_pud()
Dhugetlb.c6172 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_huge_pmd()
6173 (FOLL_PIN | FOLL_GET))) in follow_huge_pmd()
6220 if (flags & (FOLL_GET | FOLL_PIN)) in follow_huge_pud()
6229 if (flags & (FOLL_GET | FOLL_PIN)) in follow_huge_pgd()
/Linux-v5.15/include/linux/
Dmm.h2865 #define FOLL_PIN 0x40000 /* pages must be released via unpin_user_page */ macro