Re: [PATCH 0/7] File abstractions needed by Rust Binder

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On Wed, Nov 29, 2023 at 12:51:06PM +0000, Alice Ryhl wrote:
> This patchset contains the file abstractions needed by the Rust
> implementation of the Binder driver.
> 
> Please see the Rust Binder RFC for usage examples:
> https://lore.kernel.org/rust-for-linux/20231101-rust-binder-v1-0-08ba9197f637@xxxxxxxxxx/
> 
> Users of "rust: file: add Rust abstraction for `struct file`":
> 	[PATCH RFC 02/20] rust_binder: add binderfs support to Rust binder
> 	[PATCH RFC 03/20] rust_binder: add threading support
> 
> Users of "rust: cred: add Rust abstraction for `struct cred`":
> 	[PATCH RFC 05/20] rust_binder: add nodes and context managers
> 	[PATCH RFC 06/20] rust_binder: add oneway transactions
> 	[PATCH RFC 11/20] rust_binder: send nodes in transaction
> 	[PATCH RFC 13/20] rust_binder: add BINDER_TYPE_FD support
> 
> Users of "rust: security: add abstraction for security_secid_to_secctx":
> 	[PATCH RFC 06/20] rust_binder: add oneway transactions
> 
> Users of "rust: file: add `FileDescriptorReservation`":
> 	[PATCH RFC 13/20] rust_binder: add BINDER_TYPE_FD support
> 	[PATCH RFC 14/20] rust_binder: add BINDER_TYPE_FDA support
> 
> Users of "rust: file: add kuid getters":
> 	[PATCH RFC 05/20] rust_binder: add nodes and context managers
> 	[PATCH RFC 06/20] rust_binder: add oneway transactions
> 
> Users of "rust: file: add `DeferredFdCloser`":
> 	[PATCH RFC 14/20] rust_binder: add BINDER_TYPE_FDA support
> 
> Users of "rust: file: add abstraction for `poll_table`":
> 	[PATCH RFC 07/20] rust_binder: add epoll support
> 
> This patchset has some uses of read_volatile in place of READ_ONCE.
> Please see the following rfc for context on this:
> https://lore.kernel.org/all/20231025195339.1431894-1-boqun.feng@xxxxxxxxx/
> 
> This was previously sent as an rfc:
> https://lore.kernel.org/all/20230720152820.3566078-1-aliceryhl@xxxxxxxxxx/
> 
> Signed-off-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
> ---
> Alice Ryhl (4):
>       rust: security: add abstraction for security_secid_to_secctx
>       rust: file: add `Kuid` wrapper
>       rust: file: add `DeferredFdCloser`
>       rust: file: add abstraction for `poll_table`
> 
> Wedson Almeida Filho (3):
>       rust: file: add Rust abstraction for `struct file`
>       rust: cred: add Rust abstraction for `struct cred`
>       rust: file: add `FileDescriptorReservation`
> 
>  rust/bindings/bindings_helper.h |   9 ++
>  rust/bindings/lib.rs            |   1 +
>  rust/helpers.c                  |  94 +++++++++++
>  rust/kernel/cred.rs             |  73 +++++++++
>  rust/kernel/file.rs             | 345 ++++++++++++++++++++++++++++++++++++++++
>  rust/kernel/file/poll_table.rs  |  97 +++++++++++

That's pretty far away from the subsystem these wrappers belong to. I
would prefer if wrappers such as this would live directly in fs/rust/
and so live within the subsystem they belong to. I think I mentioned
that before. Maybe I missed some sort of agreement here?

>  rust/kernel/lib.rs              |   3 +
>  rust/kernel/security.rs         |  78 +++++++++
>  rust/kernel/sync/condvar.rs     |   2 +-
>  rust/kernel/task.rs             |  71 ++++++++-
>  10 files changed, 771 insertions(+), 2 deletions(-)
> ---
> base-commit: 98b1cc82c4affc16f5598d4fa14b1858671b2263
> change-id: 20231123-alice-file-525b98e8a724
> 
> Best regards,
> -- 
> Alice Ryhl <aliceryhl@xxxxxxxxxx>
> 




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