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    Subject[PATCH v5 01/14] mm/gup: don't pin migrated cma pages in movable zone
    Date
    In order not to fragment CMA the pinned pages are migrated. However,
    they are migrated to ZONE_MOVABLE, which also should not have pinned pages.

    Remove __GFP_MOVABLE, so pages can be migrated to zones where pinning
    is allowed.

    Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
    Reviewed-by: David Hildenbrand <david@redhat.com>
    Reviewed-by: John Hubbard <jhubbard@nvidia.com>
    Acked-by: Michal Hocko <mhocko@suse.com>
    ---
    mm/gup.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/mm/gup.c b/mm/gup.c
    index 3e086b073624..24f25b1e9103 100644
    --- a/mm/gup.c
    +++ b/mm/gup.c
    @@ -1563,7 +1563,7 @@ static long check_and_migrate_cma_pages(struct mm_struct *mm,
    long ret = nr_pages;
    struct migration_target_control mtc = {
    .nid = NUMA_NO_NODE,
    - .gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_NOWARN,
    + .gfp_mask = GFP_USER | __GFP_NOWARN,
    };

    check_again:
    --
    2.25.1
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