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    Subject[RFC PATCH 4/8] mm: nommu: add atomic parameter to do_munmap()
    Date
    Just add atomic parameter to keep consistent with the API change and
    pass "true" to the call site. Nommu code doesn't do the mmap_sem
    unlock/relock.

    Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
    ---
    mm/nommu.c | 5 +++--
    1 file changed, 3 insertions(+), 2 deletions(-)

    diff --git a/mm/nommu.c b/mm/nommu.c
    index ebb6e61..5954c08 100644
    --- a/mm/nommu.c
    +++ b/mm/nommu.c
    @@ -1578,7 +1578,8 @@ static int shrink_vma(struct mm_struct *mm,
    * - under NOMMU conditions the chunk to be unmapped must be backed by a single
    * VMA, though it need not cover the whole VMA
    */
    -int do_munmap(struct mm_struct *mm, unsigned long start, size_t len, struct list_head *uf)
    +int do_munmap(struct mm_struct *mm, unsigned long start, size_t len,
    + struct list_head *ufi, bool atomic)
    {
    struct vm_area_struct *vma;
    unsigned long end;
    @@ -1644,7 +1645,7 @@ int vm_munmap(unsigned long addr, size_t len)
    int ret;

    down_write(&mm->mmap_sem);
    - ret = do_munmap(mm, addr, len, NULL);
    + ret = do_munmap(mm, addr, len, NULL, true);
    up_write(&mm->mmap_sem);
    return ret;
    }
    --
    1.8.3.1
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