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The `Cow` type [1] requires that its generic parameter type implements the `ToOwned` trait [2], which provides a method to create owned data from borrowed data, usually by cloning. However, it is infallible, and thus in most cases it is not useful for the kernel. [3] Therefore, introduce `cfg(no_borrow)` to remove the `borrow` module (which contains `ToOwned` and `Cow`) from `alloc`. Link: https://doc.rust-lang.org/alloc/borrow/enum.Cow.html [1] Link: https://doc.rust-lang.org/alloc/borrow/trait.ToOwned.html [2] Link: https://lore.kernel.org/rust-for-linux/20221204103153.117675b1@GaryWorkstation/ [3] Cc: Gary Guo <gary@garyguo.net> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Finn Behrens <fin@nyantec.com> |
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alloc | ||
bindings | ||
kernel | ||
macros | ||
.gitignore | ||
bindgen_parameters | ||
build_error.rs | ||
compiler_builtins.rs | ||
exports.c | ||
helpers.c | ||
Makefile |