Merge tag 'configfs-for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/a.hindborg/linux

Pull configfs updates from Andreas Hindborg:

 - Switch the configfs rust bindings to use c string literals provided
   by the compiler, rather than a macro

 - A follow up on constifying `configfs_item_operations`, applying the
   change to the configfs sample

* tag 'configfs-for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/a.hindborg/linux:
  samples: configfs: Constify struct configfs_item_operations and configfs_group_operations
  rust: configfs: replace `kernel::c_str!` with C-Strings

drivers/block/rnull/configfs.rs

@@ -3,7 +3,6 @@
 use super::{NullBlkDevice, THIS_MODULE};
 use kernel::{
     block::mq::gen_disk::{GenDisk, GenDiskBuilder},
-    c_str,
     configfs::{self, AttributeOperations},
     configfs_attrs,
     fmt::{self, Write as _},