diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 5daafa54eb3f..35a8c4347c54 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1700,7 +1700,7 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx,
 	struct uffdio_copy uffdio_copy;
 	struct uffdio_copy __user *user_uffdio_copy;
 	struct userfaultfd_wake_range range;
-	bool mode_wp;
+	bool mode_wp, mode_access_likely;
 	uffd_flags_t uffd_flags;
 
 	user_uffdio_copy = (struct uffdio_copy __user *) arg;
@@ -1726,12 +1726,15 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx,
 	ret = -EINVAL;
 	if (uffdio_copy.src + uffdio_copy.len <= uffdio_copy.src)
 		goto out;
-	if (uffdio_copy.mode & ~(UFFDIO_COPY_MODE_DONTWAKE|UFFDIO_COPY_MODE_WP))
+	if (uffdio_copy.mode & ~(UFFDIO_COPY_MODE_DONTWAKE|UFFDIO_COPY_MODE_WP|
+				 UFFDIO_COPY_MODE_ACCESS_LIKELY))
 		goto out;
 
 	mode_wp = uffdio_copy.mode & UFFDIO_COPY_MODE_WP;
+	mode_access_likely = uffdio_copy.mode & UFFDIO_COPY_MODE_ACCESS_LIKELY;
 
-	uffd_flags = mode_wp ? UFFD_FLAGS_WP : 0;
+	uffd_flags = (mode_wp ? UFFD_FLAGS_WP : 0) |
+		     (mode_access_likely ? UFFD_FLAGS_ACCESS_LIKELY : 0);
 
 	if (mmget_not_zero(ctx->mm)) {
 		ret = mcopy_atomic(ctx->mm, uffdio_copy.dst, uffdio_copy.src,
@@ -1816,7 +1819,7 @@ static int userfaultfd_writeprotect(struct userfaultfd_ctx *ctx,
 	struct uffdio_writeprotect uffdio_wp;
 	struct uffdio_writeprotect __user *user_uffdio_wp;
 	struct userfaultfd_wake_range range;
-	bool mode_wp, mode_dontwake;
+	bool mode_wp, mode_dontwake, mode_access_likely;
 	uffd_flags_t uffd_flags;
 
 	if (atomic_read(&ctx->mmap_changing))
@@ -1834,16 +1837,19 @@ static int userfaultfd_writeprotect(struct userfaultfd_ctx *ctx,
 		return ret;
 
 	if (uffdio_wp.mode & ~(UFFDIO_WRITEPROTECT_MODE_DONTWAKE |
-			       UFFDIO_WRITEPROTECT_MODE_WP))
+			       UFFDIO_WRITEPROTECT_MODE_WP |
+			       UFFDIO_WRITEPROTECT_MODE_ACCESS_LIKELY))
 		return -EINVAL;
 
 	mode_wp = uffdio_wp.mode & UFFDIO_WRITEPROTECT_MODE_WP;
 	mode_dontwake = uffdio_wp.mode & UFFDIO_WRITEPROTECT_MODE_DONTWAKE;
+	mode_access_likely = uffdio_wp.mode & UFFDIO_WRITEPROTECT_MODE_ACCESS_LIKELY;
 
 	if (mode_wp && mode_dontwake)
 		return -EINVAL;
 
-	uffd_flags = (mode_wp ? UFFD_FLAGS_WP : 0);
+	uffd_flags = (mode_wp ? UFFD_FLAGS_WP : 0) |
+		     (mode_access_likely ? UFFD_FLAGS_ACCESS_LIKELY : 0);
 
 	if (mmget_not_zero(ctx->mm)) {
 		ret = mwriteprotect_range(ctx->mm, uffdio_wp.range.start,
@@ -1871,6 +1877,7 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg)
 	struct uffdio_continue uffdio_continue;
 	struct uffdio_continue __user *user_uffdio_continue;
 	struct userfaultfd_wake_range range;
+	uffd_flags_t uffd_flags;
 
 	user_uffdio_continue = (struct uffdio_continue __user *)arg;
 
@@ -1898,10 +1905,12 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg)
 	if (uffdio_continue.mode & ~UFFDIO_CONTINUE_MODE_DONTWAKE)
 		goto out;
 
+	uffd_flags = UFFD_FLAGS_ACCESS_LIKELY;
+
 	if (mmget_not_zero(ctx->mm)) {
 		ret = mcopy_continue(ctx->mm, uffdio_continue.range.start,
 				     uffdio_continue.range.len,
-				     &ctx->mmap_changing, 0);
+				     &ctx->mmap_changing, uffd_flags);
 		mmput(ctx->mm);
 	} else {
 		return -ESRCH;
diff --git a/include/linux/userfaultfd_k.h b/include/linux/userfaultfd_k.h
index 6331148023c1..e6ac165ec044 100644
--- a/include/linux/userfaultfd_k.h
+++ b/include/linux/userfaultfd_k.h
@@ -58,6 +58,7 @@ enum mcopy_atomic_mode {
 typedef unsigned int __bitwise uffd_flags_t;
 
 #define UFFD_FLAGS_WP			((__force uffd_flags_t)BIT(0))
+#define UFFD_FLAGS_ACCESS_LIKELY	((__force uffd_flags_t)BIT(1))
 
 extern int mfill_atomic_install_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
 				    struct vm_area_struct *dst_vma,
diff --git a/include/uapi/linux/userfaultfd.h b/include/uapi/linux/userfaultfd.h
index 005e5e306266..d9c8ce9ba777 100644
--- a/include/uapi/linux/userfaultfd.h
+++ b/include/uapi/linux/userfaultfd.h
@@ -38,7 +38,8 @@
 			   UFFD_FEATURE_MINOR_HUGETLBFS |	\
 			   UFFD_FEATURE_MINOR_SHMEM |		\
 			   UFFD_FEATURE_EXACT_ADDRESS |		\
-			   UFFD_FEATURE_WP_HUGETLBFS_SHMEM)
+			   UFFD_FEATURE_WP_HUGETLBFS_SHMEM |	\
+			   UFFD_FEATURE_ACCESS_HINTS)
 #define UFFD_API_IOCTLS				\
 	((__u64)1 << _UFFDIO_REGISTER |		\
 	 (__u64)1 << _UFFDIO_UNREGISTER |	\
@@ -203,6 +204,10 @@ struct uffdio_api {
 	 *
 	 * UFFD_FEATURE_WP_HUGETLBFS_SHMEM indicates that userfaultfd
 	 * write-protection mode is supported on both shmem and hugetlbfs.
+	 *
+	 * UFFD_FEATURE_ACCESS_HINTS indicates that the copy supports
+	 * UFFDIO_COPY_MODE_ACCESS_LIKELY supports
+	 * UFFDIO_WRITEPROTECT_MODE_ACCESS_LIKELY.
 	 */
 #define UFFD_FEATURE_PAGEFAULT_FLAG_WP		(1<<0)
 #define UFFD_FEATURE_EVENT_FORK			(1<<1)
@@ -217,6 +222,7 @@ struct uffdio_api {
 #define UFFD_FEATURE_MINOR_SHMEM		(1<<10)
 #define UFFD_FEATURE_EXACT_ADDRESS		(1<<11)
 #define UFFD_FEATURE_WP_HUGETLBFS_SHMEM		(1<<12)
+#define UFFD_FEATURE_ACCESS_HINTS		(1<<13)
 	__u64 features;
 
 	__u64 ioctls;
@@ -260,6 +266,13 @@ struct uffdio_copy {
 	 * copy_from_user will not read the last 8 bytes.
 	 */
 	__s64 copy;
+	/*
+	 * UFFDIO_COPY_MODE_ACCESS_LIKELY will set the mapped page as young.
+	 * This can reduce the time that the first access to the page takes.
+	 * Yet, if set opportunistically to memory that is not used, it might
+	 * extend the time before the unused memory pages are reclaimed.
+	 */
+#define UFFDIO_COPY_MODE_ACCESS_LIKELY		((__u64)1<<3)
 };
 
 struct uffdio_zeropage {
@@ -284,6 +297,10 @@ struct uffdio_writeprotect {
  * UFFDIO_WRITEPROTECT_MODE_DONTWAKE: set the flag to avoid waking up
  * any wait thread after the operation succeeds.
  *
+ * UFFDIO_WRITEPROTECT_MODE_ACCESS_LIKELY: set the flag to mark the modified
+ * memory as young, which can reduce the time that the first access
+ * to the page takes.
+ *
  * NOTE: Write protecting a region (WP=1) is unrelated to page faults,
  * therefore DONTWAKE flag is meaningless with WP=1.  Removing write
  * protection (WP=0) in response to a page fault wakes the faulting
@@ -291,6 +308,7 @@ struct uffdio_writeprotect {
  */
 #define UFFDIO_WRITEPROTECT_MODE_WP		((__u64)1<<0)
 #define UFFDIO_WRITEPROTECT_MODE_DONTWAKE	((__u64)1<<1)
+#define UFFDIO_WRITEPROTECT_MODE_ACCESS_LIKELY	((__u64)1<<2)
 	__u64 mode;
 };
 
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c
index 734de6aa0b8e..140c8d3e946e 100644
--- a/mm/userfaultfd.c
+++ b/mm/userfaultfd.c
@@ -92,6 +92,9 @@ int mfill_atomic_install_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
 		 */
 		_dst_pte = pte_wrprotect(_dst_pte);
 
+	if (uffd_flags & UFFD_FLAGS_ACCESS_LIKELY)
+		_dst_pte = pte_mkyoung(_dst_pte);
+
 	dst_pte = pte_offset_map_lock(dst_mm, dst_pmd, dst_addr, &ptl);
 
 	if (vma_is_shmem(dst_vma)) {
@@ -202,7 +205,8 @@ static int mcopy_atomic_pte(struct mm_struct *dst_mm,
 static int mfill_zeropage_pte(struct mm_struct *dst_mm,
 			      pmd_t *dst_pmd,
 			      struct vm_area_struct *dst_vma,
-			      unsigned long dst_addr)
+			      unsigned long dst_addr,
+			      uffd_flags_t uffd_flags)
 {
 	pte_t _dst_pte, *dst_pte;
 	spinlock_t *ptl;
@@ -225,6 +229,10 @@ static int mfill_zeropage_pte(struct mm_struct *dst_mm,
 	ret = -EEXIST;
 	if (!pte_none(*dst_pte))
 		goto out_unlock;
+
+	if (uffd_flags & UFFD_FLAGS_ACCESS_LIKELY)
+		_dst_pte = pte_mkyoung(_dst_pte);
+
 	set_pte_at(dst_mm, dst_addr, dst_pte, _dst_pte);
 	/* No need to invalidate - it was non-present before */
 	update_mmu_cache(dst_vma, dst_addr, dst_pte);
@@ -498,7 +506,7 @@ static __always_inline ssize_t mfill_atomic_pte(struct mm_struct *dst_mm,
 					       uffd_flags);
 		else
 			err = mfill_zeropage_pte(dst_mm, dst_pmd,
-						 dst_vma, dst_addr);
+						 dst_vma, dst_addr, uffd_flags);
 	} else {
 		err = shmem_mfill_atomic_pte(dst_mm, dst_pmd, dst_vma,
 					     dst_addr, src_addr,
@@ -691,6 +699,9 @@ ssize_t mfill_zeropage(struct mm_struct *dst_mm, unsigned long start,
 		       unsigned long len, atomic_t *mmap_changing,
 		       uffd_flags_t uffd_flags)
 {
+	/* There is no cost for setting the access bit of a zeropage */
+	uffd_flags |= UFFD_FLAGS_ACCESS_LIKELY;
+
 	return __mcopy_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_ZEROPAGE,
 			      mmap_changing, 0);
 }
@@ -699,6 +710,9 @@ ssize_t mcopy_continue(struct mm_struct *dst_mm, unsigned long start,
 		       unsigned long len, atomic_t *mmap_changing,
 		       uffd_flags_t uffd_flags)
 {
+	/* The page is likely to be accessed */
+	uffd_flags |= UFFD_FLAGS_ACCESS_LIKELY;
+
 	return __mcopy_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_CONTINUE,
 			      mmap_changing, 0);
 }
