diff --git a/fs/fuse/backing.c b/fs/fuse/backing.c
index f30fe8ef5c05..bc7258d78878 100644
--- a/fs/fuse/backing.c
+++ b/fs/fuse/backing.c
@@ -750,6 +750,44 @@ void *fuse_file_write_iter_finalize(struct fuse_args *fa,
 	return ERR_PTR(fwo->size);
 }
 
+ssize_t fuse_backing_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	int ret;
+	struct fuse_file *ff = file->private_data;
+	struct inode *fuse_inode = file_inode(file);
+	struct file *backing_file = ff->backing_file;
+	struct inode *backing_inode = file_inode(backing_file);
+
+	if (!backing_file->f_op->mmap)
+		return -ENODEV;
+
+	if (WARN_ON(file != vma->vm_file))
+		return -EIO;
+
+	vma->vm_file = get_file(backing_file);
+
+	ret = call_mmap(vma->vm_file, vma);
+
+	if (ret)
+		fput(backing_file);
+	else
+		fput(file);
+
+	if (file->f_flags & O_NOATIME)
+		return ret;
+
+	if ((!timespec64_equal(&fuse_inode->i_mtime,
+			       &backing_inode->i_mtime) ||
+	     !timespec64_equal(&fuse_inode->i_ctime,
+			       &backing_inode->i_ctime))) {
+		fuse_inode->i_mtime = backing_inode->i_mtime;
+		fuse_inode->i_ctime = backing_inode->i_ctime;
+	}
+	touch_atime(&file->f_path);
+
+	return ret;
+}
+
 int fuse_file_fallocate_initialize(struct fuse_args *fa,
 		struct fuse_fallocate_in *ffi,
 		struct file *file, int mode, loff_t offset, loff_t length)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index b5ff5d34ac65..c3346b090954 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2525,6 +2525,12 @@ static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma)
 	if (FUSE_IS_DAX(file_inode(file)))
 		return fuse_dax_mmap(file, vma);
 
+#ifdef CONFIG_FUSE_BPF
+	/* TODO - this is simply passthrough, not a proper BPF filter */
+	if (ff->backing_file)
+		return fuse_backing_mmap(file, vma);
+#endif
+
 	if (ff->passthrough.filp)
 		return fuse_passthrough_mmap(file, vma);
 
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index eb8e6c78c128..7adb8f4a6224 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1495,6 +1495,8 @@ int fuse_file_write_iter_backing(struct fuse_args *fa,
 void *fuse_file_write_iter_finalize(struct fuse_args *fa,
 		struct kiocb *iocb, struct iov_iter *from);
 
+ssize_t fuse_backing_mmap(struct file *file, struct vm_area_struct *vma);
+
 int fuse_file_fallocate_initialize(struct fuse_args *fa,
 		struct fuse_fallocate_in *ffi,
 		struct file *file, int mode, loff_t offset, loff_t length);