[PATCH v2 0/5] rust: add DropGuard

[Mohamed Osama]

Add the Rust kernel DropGuard API and migrate the existing ScopeGuard
users in the block, serdev, and locking code.

DropGuard runs a FnOnce callback when dropped and provides dismiss() to
take ownership of the wrapped value without running the cleanup callback.

Changes since v1:
- Split the changes into separate patches for each affected module.
- Added a separate KUnit configuration patch.

The series was tested with:
- make LLVM=1 rustfmtcheck
- make LLVM=1 rustdoc
- make LLVM=1 -j$(nproc)
- git diff --check
- scripts/checkpatch.pl

Mohamed Osama (5):
  rust: add DropGuard KUnit test configuration
  rust: mem: add DropGuard
  rust: block: gen_disk: use DropGuard
  rust: serdev: use DropGuard
  rust: sync: lock: use DropGuard

 rust/kernel/Kconfig.test         |  10 +++
 rust/kernel/block/mq/gen_disk.rs |  11 +--
 rust/kernel/mem.rs               | 123 +++++++++++++++++++++++++++++++
 rust/kernel/serdev.rs            |  10 +--
 rust/kernel/sync/lock.rs         |   5 +-
 5 files changed, 146 insertions(+), 13 deletions(-)

-- 
2.43.0