v4.19.13 snapshot.
diff --git a/fs/minix/file.c b/fs/minix/file.c
new file mode 100644
index 0000000..c50b0a2
--- /dev/null
+++ b/fs/minix/file.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/fs/minix/file.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * minix regular file handling primitives
+ */
+
+#include "minix.h"
+
+/*
+ * We have mostly NULLs here: the current defaults are OK for
+ * the minix filesystem.
+ */
+const struct file_operations minix_file_operations = {
+ .llseek = generic_file_llseek,
+ .read_iter = generic_file_read_iter,
+ .write_iter = generic_file_write_iter,
+ .mmap = generic_file_mmap,
+ .fsync = generic_file_fsync,
+ .splice_read = generic_file_splice_read,
+};
+
+static int minix_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *inode = d_inode(dentry);
+ int error;
+
+ error = setattr_prepare(dentry, attr);
+ if (error)
+ return error;
+
+ if ((attr->ia_valid & ATTR_SIZE) &&
+ attr->ia_size != i_size_read(inode)) {
+ error = inode_newsize_ok(inode, attr->ia_size);
+ if (error)
+ return error;
+
+ truncate_setsize(inode, attr->ia_size);
+ minix_truncate(inode);
+ }
+
+ setattr_copy(inode, attr);
+ mark_inode_dirty(inode);
+ return 0;
+}
+
+const struct inode_operations minix_file_inode_operations = {
+ .setattr = minix_setattr,
+ .getattr = minix_getattr,
+};