xfs: introduce xfs_for_each_perag_wrap()

[platform/kernel/linux-starfive.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 87d9293..425a934 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1524,6 +1524,10 @@ int vma_wants_writenotify(struct vm_area_struct *vma, pgprot_t vm_page_prot)
        if (vma_soft_dirty_enabled(vma) && !is_vm_hugetlb_page(vma))
                return 1;
 
+       /* Do we need write faults for uffd-wp tracking? */
+       if (userfaultfd_wp(vma))
+               return 1;
+
        /* Specialty mapping? */
        if (vm_flags & VM_PFNMAP)
                return 0;
@@ -2290,7 +2294,7 @@ static inline int munmap_sidetree(struct vm_area_struct *vma,
  * @start: The aligned start address to munmap.
  * @end: The aligned end address to munmap.
  * @uf: The userfaultfd list_head
- * @downgrade: Set to true to attempt a write downgrade of the mmap_sem
+ * @downgrade: Set to true to attempt a write downgrade of the mmap_lock
  *
  * If @downgrade is true, check return code for potential release of the lock.
  */
@@ -2465,7 +2469,7 @@ map_count_exceeded:
  * @len: The length of the range to munmap
  * @uf: The userfaultfd list_head
  * @downgrade: set to true if the user wants to attempt to write_downgrade the
- * mmap_sem
+ * mmap_lock
  *
  * This function takes a @mas that is either pointing to the previous VMA or set
  * to MA_START and sets it up to remove the mapping(s).  The @len will be