[GIT PULL] configfs for v6.16

[Andreas Hindborg <a.hindborg@kernel.org>]

Hi Linus,

This is my first pull request after picking up configfs [1], and my
first pull request to you. I hope I got everything right!

Summary
=======

This pull request contains configfs changes for v6.16:

 - Allow creation of rw files with custom permissions. This allows
   drivers to better protect secrets written through configfs.

 - Fix a bug where an error condition did not cause an early return
   while populating attributes.

 - Report ENOMEM rather than EFAULT when kvasprintf() fails in
   config_item_set_name().

 - Add a Rust API for configfs. This allows Rust drivers to use configfs
   through a memory safe interface.

Merge conflicts with other trees
================================

This contains a merge conflict with drm-nova:

diff --cc samples/rust/Makefile
index b3c9178d654a,6a466afd2a21..000000000000
--- a/samples/rust/Makefile
+++ b/samples/rust/Makefile
@@@ -8,7 -8,7 +8,8 @@@ obj-$(CONFIG_SAMPLE_RUST_DMA)			+= rust
  obj-$(CONFIG_SAMPLE_RUST_DRIVER_PCI)		+= rust_driver_pci.o
  obj-$(CONFIG_SAMPLE_RUST_DRIVER_PLATFORM)	+= rust_driver_platform.o
  obj-$(CONFIG_SAMPLE_RUST_DRIVER_FAUX)		+= rust_driver_faux.o
 +obj-$(CONFIG_SAMPLE_RUST_CONFIGFS)		+= rust_configfs.o
+ obj-$(CONFIG_SAMPLE_RUST_DRIVER_AUXILIARY)	+= rust_driver_auxiliary.o

---

With cpufreq-arm:

diff --cc rust/bindings/bindings_helper.h
index 1a532b83a9af,7c1d78f68076..000000000000
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@@ -10,7 -10,9 +10,10 @@@
  #include <linux/blk-mq.h>
  #include <linux/blk_types.h>
  #include <linux/blkdev.h>
+ #include <linux/clk.h>
 +#include <linux/configfs.h>
+ #include <linux/cpu.h>
+ #include <linux/cpufreq.h>
  #include <linux/cpumask.h>
  #include <linux/cred.h>
  #include <linux/device/faux.h>
diff --cc rust/kernel/lib.rs
index 354eb1605194,871fcdc09b35..000000000000
--- a/rust/kernel/lib.rs
+++ b/rust/kernel/lib.rs
@@@ -42,8 -42,12 +42,14 @@@ pub mod alloc
  pub mod block;
  #[doc(hidden)]
  pub mod build_assert;
+ #[cfg(CONFIG_COMMON_CLK)]
+ pub mod clk;
 +#[cfg(CONFIG_CONFIGFS_FS)]
 +pub mod configfs;
+ pub mod cpu;
+ #[cfg(CONFIG_CPU_FREQ)]
+ pub mod cpufreq;
+ pub mod cpumask;
  pub mod cred;
  pub mod device;
  pub mod device_id;

Pull Request
============

The following changes since commit 8ffd015db85fea3e15a77027fda6c02ced4d2444:

  Linux 6.15-rc2 (2025-04-13 11:54:49 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/a.hindborg/linux.git tags/configfs-for-v6.16

for you to fetch changes up to c6b1908224593db76f77b904894cd51933559ae9:

  MAINTAINERS: add configfs Rust abstractions (2025-05-12 11:05:07 +0200)

Best regards,
Andreas Hindborg


----------------------------------------------------------------
configfs-for-v6.16

----------------------------------------------------------------
Andreas Hindborg (3):
      rust: configfs: introduce rust support for configfs
      rust: configfs: add a sample demonstrating configfs usage
      MAINTAINERS: add configfs Rust abstractions

Richard Weinberger (1):
      configfs: Add CONFIGFS_ATTR_PERM helper

Zijun Hu (3):
      configfs: Delete semicolon from macro type_print() definition
      configfs: Do not override creating attribute file failure in populate_attrs()
      configfs: Correct error value returned by API config_item_set_name()

 MAINTAINERS                     |    2 +
 fs/configfs/dir.c               |    4 +-
 fs/configfs/item.c              |    2 +-
 include/linux/configfs.h        |    8 +-
 rust/bindings/bindings_helper.h |    1 +
 rust/helpers/mutex.c            |    5 +
 rust/kernel/configfs.rs         | 1049 +++++++++++++++++++++++++++++++++++++++
 rust/kernel/lib.rs              |    2 +
 samples/rust/Kconfig            |   11 +
 samples/rust/Makefile           |    1 +
 samples/rust/rust_configfs.rs   |  192 +++++++
 11 files changed, 1272 insertions(+), 5 deletions(-)
 create mode 100644 rust/kernel/configfs.rs
 create mode 100644 samples/rust/rust_configfs.rs

---

[1] https://lore.kernel.org/all/20250326-configfs-maintainer-v1-1-b175189fa27b@kernel.org