diff options
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index db895230ee7e..3f0686b54701 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6658,10 +6658,8 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma, } pte = huge_ptep_get(ptep); if (unlikely(is_hugetlb_entry_hwpoisoned(pte))) { - spin_unlock(ptl); - continue; - } - if (unlikely(is_hugetlb_entry_migration(pte))) { + /* Nothing to do. */ + } else if (unlikely(is_hugetlb_entry_migration(pte))) { swp_entry_t entry = pte_to_swp_entry(pte); struct page *page = pfn_swap_entry_to_page(entry); @@ -6682,18 +6680,13 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma, set_huge_pte_at(mm, address, ptep, newpte); pages++; } - spin_unlock(ptl); - continue; - } - if (unlikely(pte_marker_uffd_wp(pte))) { - /* - * This is changing a non-present pte into a none pte, - * no need for huge_ptep_modify_prot_start/commit(). - */ + } else if (unlikely(is_pte_marker(pte))) { + /* No other markers apply for now. */ + WARN_ON_ONCE(!pte_marker_uffd_wp(pte)); if (uffd_wp_resolve) + /* Safe to modify directly (non-present->none). */ huge_pte_clear(mm, address, ptep, psize); - } - if (!huge_pte_none(pte)) { + } else if (!huge_pte_none(pte)) { pte_t old_pte; unsigned int shift = huge_page_shift(hstate_vma(vma)); |