linux-kernel - [GIT PULL 01/12 for v7.0] vfs rust

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Message-ID: <20260206-vfs-rust-v70-e1fb02c09eaa@brauner>
Date: Fri,  6 Feb 2026 17:49:57 +0100
From: Christian Brauner <brauner@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Christian Brauner <brauner@...nel.org>,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [GIT PULL 01/12 for v7.0] vfs rust

Hey Linus,

/* Summary */

This contains the rust changes for this cycle.

llow inlining C helpers into Rust when using LTO: Add the __rust_helper
annotation to all VFS-related Rust helper functions.

Currently, C helpers cannot be inlined into Rust code even under LTO because
LLVM detects slightly different codegen options between the C and Rust
compilation units (differing null-pointer-check flags, builtin lists, and
target feature strings). The __rust_helper macro is the first step toward
fixing this: it is currently #defined to nothing, but a follow-up series will
change it to __always_inline when compiling with LTO (while keeping it empty
for bindgen, which ignores inline functions).

This picks up the VFS portion (fs, pid_namespace, poll) of a larger tree-wide
series.

/* Testing */

gcc (Debian 14.2.0-19) 14.2.0
Debian clang version 19.1.7 (3+b1)

No build failures or warnings were observed.

/* Conflicts */

Merge conflicts with mainline
=============================

No known conflicts.

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

The following changes since commit 8f0b4cce4481fb22653697cced8d0d04027cb1e8:

  Linux 6.19-rc1 (2025-12-14 16:05:07 +1200)

are available in the Git repository at:

  git@...olite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs tags/vfs-7.0-rc1.rust

for you to fetch changes up to 5334fc280735dcf5882511a219a99b5759e14870:

  Merge patch series "Allow inlining C helpers into Rust when using LTO" (2025-12-15 14:13:04 +0100)

----------------------------------------------------------------
vfs-7.0-rc1.rust

Please consider pulling these changes from the signed vfs-7.0-rc1.rust tag.

Thanks!
Christian

----------------------------------------------------------------
Alice Ryhl (3):
      rust: fs: add __rust_helper to helpers
      rust: pid_namespace: add __rust_helper to helpers
      rust: poll: add __rust_helper to helpers

Christian Brauner (1):
      Merge patch series "Allow inlining C helpers into Rust when using LTO"

 rust/helpers/fs.c            | 2 +-
 rust/helpers/pid_namespace.c | 8 +++++---
 rust/helpers/poll.c          | 5 +++--
 3 files changed, 9 insertions(+), 6 deletions(-)