diff options
Diffstat (limited to 'mm/mremap.c')
| -rw-r--r-- | mm/mremap.c | 43 |
1 files changed, 22 insertions, 21 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index 35de0a7b910e..672264807db6 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -17,7 +17,7 @@ #include <linux/swap.h> #include <linux/capability.h> #include <linux/fs.h> -#include <linux/swapops.h> +#include <linux/leafops.h> #include <linux/highmem.h> #include <linux/security.h> #include <linux/syscalls.h> @@ -25,10 +25,10 @@ #include <linux/uaccess.h> #include <linux/userfaultfd_k.h> #include <linux/mempolicy.h> +#include <linux/pgalloc.h> #include <asm/cacheflush.h> #include <asm/tlb.h> -#include <asm/pgalloc.h> #include "internal.h" @@ -158,16 +158,20 @@ static void drop_rmap_locks(struct vm_area_struct *vma) static pte_t move_soft_dirty_pte(pte_t pte) { + if (pte_none(pte)) + return pte; + /* * Set soft dirty bit so we can notice * in userspace the ptes were moved. */ -#ifdef CONFIG_MEM_SOFT_DIRTY - if (pte_present(pte)) - pte = pte_mksoft_dirty(pte); - else if (is_swap_pte(pte)) - pte = pte_swp_mksoft_dirty(pte); -#endif + if (pgtable_supports_soft_dirty()) { + if (pte_present(pte)) + pte = pte_mksoft_dirty(pte); + else + pte = pte_swp_mksoft_dirty(pte); + } + return pte; } @@ -187,7 +191,7 @@ static int mremap_folio_pte_batch(struct vm_area_struct *vma, unsigned long addr if (!folio || !folio_test_large(folio)) return 1; - return folio_pte_batch(folio, ptep, pte, max_nr); + return folio_pte_batch_flags(folio, NULL, ptep, &pte, max_nr, FPB_RESPECT_WRITE); } static int move_ptes(struct pagetable_move_control *pmc, @@ -288,13 +292,13 @@ static int move_ptes(struct pagetable_move_control *pmc, pte = move_pte(pte, old_addr, new_addr); pte = move_soft_dirty_pte(pte); - if (need_clear_uffd_wp && pte_marker_uffd_wp(pte)) + if (need_clear_uffd_wp && pte_is_uffd_wp_marker(pte)) pte_clear(mm, new_addr, new_ptep); else { if (need_clear_uffd_wp) { if (pte_present(pte)) pte = pte_clear_uffd_wp(pte); - else if (is_swap_pte(pte)) + else pte = pte_swp_clear_uffd_wp(pte); } set_ptes(mm, new_addr, new_ptep, pte, nr_ptes); @@ -847,7 +851,7 @@ unsigned long move_page_tables(struct pagetable_move_control *pmc) if (!new_pmd) break; again: - if (is_swap_pmd(*old_pmd) || pmd_trans_huge(*old_pmd)) { + if (pmd_is_huge(*old_pmd)) { if (extent == HPAGE_PMD_SIZE && move_pgt_entry(pmc, HPAGE_PMD, old_pmd, new_pmd)) continue; @@ -1237,10 +1241,10 @@ static int copy_vma_and_data(struct vma_remap_struct *vrm, } /* - * Perform final tasks for MADV_DONTUNMAP operation, clearing mlock() and - * account flags on remaining VMA by convention (it cannot be mlock()'d any - * longer, as pages in range are no longer mapped), and removing anon_vma_chain - * links from it (if the entire VMA was copied over). + * Perform final tasks for MADV_DONTUNMAP operation, clearing mlock() flag on + * remaining VMA by convention (it cannot be mlock()'d any longer, as pages in + * range are no longer mapped), and removing anon_vma_chain links from it if the + * entire VMA was copied over. */ static void dontunmap_complete(struct vma_remap_struct *vrm, struct vm_area_struct *new_vma) @@ -1250,11 +1254,8 @@ static void dontunmap_complete(struct vma_remap_struct *vrm, unsigned long old_start = vrm->vma->vm_start; unsigned long old_end = vrm->vma->vm_end; - /* - * We always clear VM_LOCKED[ONFAULT] | VM_ACCOUNT on the old - * vma. - */ - vm_flags_clear(vrm->vma, VM_LOCKED_MASK | VM_ACCOUNT); + /* We always clear VM_LOCKED[ONFAULT] on the old VMA. */ + vm_flags_clear(vrm->vma, VM_LOCKED_MASK); /* * anon_vma links of the old vma is no longer needed after its page |