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

/kernel/linux/linux-5.10/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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/kernel/linux/linux-5.10/mm/
Dgup.c119 else if (flags & FOLL_PIN) { in try_grab_compound_head()
163 if (flags & FOLL_PIN) { in put_compound_head()
199 WARN_ON_ONCE((flags & (FOLL_GET | FOLL_PIN)) == (FOLL_GET | FOLL_PIN)); in try_grab_page()
203 else if (flags & FOLL_PIN) { in try_grab_page()
241 put_compound_head(compound_head(page), 1, FOLL_PIN); in unpin_user_page()
405 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_page_pte()
406 (FOLL_PIN | FOLL_GET))) in follow_page_pte()
452 if (!page && pte_devmap(pte) && (flags & (FOLL_GET | FOLL_PIN))) { in follow_page_pte()
501 if (flags & FOLL_PIN) { in follow_page_pte()
769 WARN_ON_ONCE(flags & (FOLL_GET | FOLL_PIN)); in follow_page_mask()
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Dhuge_memory.c980 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_devmap_pmd()
981 (FOLL_PIN | FOLL_GET))) in follow_devmap_pmd()
999 if (!(flags & (FOLL_GET | FOLL_PIN))) in follow_devmap_pmd()
1149 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_devmap_pud()
1150 (FOLL_PIN | FOLL_GET))) in follow_devmap_pud()
1167 if (!(flags & (FOLL_GET | FOLL_PIN))) in follow_devmap_pud()
Dhugetlb.c5608 if (WARN_ON_ONCE((flags & (FOLL_PIN | FOLL_GET)) == in follow_huge_pmd_pte()
5609 (FOLL_PIN | FOLL_GET))) in follow_huge_pmd_pte()
5654 if (flags & (FOLL_GET | FOLL_PIN)) in follow_huge_pud()
5663 if (flags & (FOLL_GET | FOLL_PIN)) in follow_huge_pgd()
/kernel/linux/linux-5.10/include/linux/
Dmm.h2853 #define FOLL_PIN 0x40000 /* pages must be released via unpin_user_page */ macro