diff options
Diffstat (limited to 'mm/rmap.c')
-rw-r--r-- | mm/rmap.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 72464378e1a6..94d6b24a1ac2 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -73,6 +73,7 @@ #include <linux/page_idle.h> #include <linux/memremap.h> #include <linux/userfaultfd_k.h> +#include <linux/mm_inline.h> #include <asm/tlbflush.h> @@ -1585,6 +1586,13 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma, pteval = ptep_clear_flush(vma, address, pvmw.pte); } + /* + * Now the pte is cleared. If this pte was uffd-wp armed, + * we may want to replace a none pte with a marker pte if + * it's file-backed, so we don't lose the tracking info. + */ + pte_install_uffd_wp_if_needed(vma, address, pvmw.pte, pteval); + /* Set the dirty flag on the folio now the pte is gone. */ if (pte_dirty(pteval)) folio_mark_dirty(folio); |