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    Subject[PATCH v6 2/6] mmap: make mlock_future_check() global
    Date
    From: Mike Rapoport <rppt@linux.ibm.com>

    It will be used by the upcoming secret memory implementation.

    Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
    ---
    mm/internal.h | 3 +++
    mm/mmap.c | 5 ++---
    2 files changed, 5 insertions(+), 3 deletions(-)

    diff --git a/mm/internal.h b/mm/internal.h
    index 10c677655912..40544fbf49c9 100644
    --- a/mm/internal.h
    +++ b/mm/internal.h
    @@ -350,6 +350,9 @@ static inline void munlock_vma_pages_all(struct vm_area_struct *vma)
    extern void mlock_vma_page(struct page *page);
    extern unsigned int munlock_vma_page(struct page *page);

    +extern int mlock_future_check(struct mm_struct *mm, unsigned long flags,
    + unsigned long len);
    +
    /*
    * Clear the page's PageMlocked(). This can be useful in a situation where
    * we want to unconditionally remove a page from the pagecache -- e.g.,
    diff --git a/mm/mmap.c b/mm/mmap.c
    index 40248d84ad5f..190761920142 100644
    --- a/mm/mmap.c
    +++ b/mm/mmap.c
    @@ -1310,9 +1310,8 @@ static inline unsigned long round_hint_to_min(unsigned long hint)
    return hint;
    }

    -static inline int mlock_future_check(struct mm_struct *mm,
    - unsigned long flags,
    - unsigned long len)
    +int mlock_future_check(struct mm_struct *mm, unsigned long flags,
    + unsigned long len)
    {
    unsigned long locked, lock_limit;

    --
    2.28.0
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