diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 93f3b91ad9ce..82a46db963be 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2117,6 +2117,11 @@ static const struct vm_operations_struct fuse_file_vm_ops = {
 
 static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma)
 {
+	struct fuse_file *ff = file->private_data;
+
+	if (ff->passthrough.filp)
+		return fuse_passthrough_mmap(file, vma);
+
 	if ((vma->vm_flags & VM_SHARED) && (vma->vm_flags & VM_MAYWRITE))
 		fuse_link_write_file(file);
 
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index e556c256e9b2..dec2e1f5a0b5 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1050,5 +1050,6 @@ int fuse_passthrough_setup(struct fuse_conn *fc, struct fuse_file *ff,
 void fuse_passthrough_release(struct fuse_passthrough *passthrough);
 ssize_t fuse_passthrough_read_iter(struct kiocb *iocb, struct iov_iter *to);
 ssize_t fuse_passthrough_write_iter(struct kiocb *iocb, struct iov_iter *from);
+ssize_t fuse_passthrough_mmap(struct file *file, struct vm_area_struct *vma);
 
 #endif /* _FS_FUSE_I_H */
diff --git a/fs/fuse/passthrough.c b/fs/fuse/passthrough.c
index 05d22f16c824..39d9a77c5454 100644
--- a/fs/fuse/passthrough.c
+++ b/fs/fuse/passthrough.c
@@ -148,6 +148,47 @@ ssize_t fuse_passthrough_write_iter(struct kiocb *iocb_fuse,
 	return ret;
 }
 
+ssize_t fuse_passthrough_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	int ret;
+	const struct cred *old_cred;
+	struct fuse_file *ff = file->private_data;
+	struct inode *fuse_inode = file_inode(file);
+	struct file *passthrough_filp = ff->passthrough.filp;
+	struct inode *passthrough_inode = file_inode(passthrough_filp);
+
+	if (!passthrough_filp->f_op->mmap)
+		return -ENODEV;
+
+	if (WARN_ON(file != vma->vm_file))
+		return -EIO;
+
+	vma->vm_file = get_file(passthrough_filp);
+
+	old_cred = override_creds(ff->passthrough.cred);
+	ret = call_mmap(vma->vm_file, vma);
+	revert_creds(old_cred);
+
+	if (ret)
+		fput(passthrough_filp);
+	else
+		fput(file);
+
+	if (file->f_flags & O_NOATIME)
+		return ret;
+
+	if ((!timespec64_equal(&fuse_inode->i_mtime,
+			       &passthrough_inode->i_mtime) ||
+	     !timespec64_equal(&fuse_inode->i_ctime,
+			       &passthrough_inode->i_ctime))) {
+		fuse_inode->i_mtime = passthrough_inode->i_mtime;
+		fuse_inode->i_ctime = passthrough_inode->i_ctime;
+	}
+	touch_atime(&file->f_path);
+
+	return ret;
+}
+
 int fuse_passthrough_open(struct fuse_dev *fud,
 			  struct fuse_passthrough_out *pto)
 {