Add some missing fallible methods that we need.
They are all marked as:
#[stable(feature = "kernel", since = "1.0.0")]
for easy identification.
Lina: Extracted from commit 487d7578bd03 ("rust: alloc: add some `try_*`
methods we need") in rust-for-linux/rust.
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Asahi Lina <lina@asahilina.net>
Link: https://github.com/Rust-for-Linux/linux/commit/487d7578bd03
Link: https://lore.kernel.org/r/20230224-rust-vec-v1-4-733b5b5a57c5@asahilina.net
[ Match the non-fallible methods from version 1.62.0, since those
in commit 487d7578bd03 were written for 1.54.0-beta.1. ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Add the missing SPDX headers to these modules, which were just imported
from the Rust stdlib. Doing this in a separate commit makes it easier to
audit that the files have not been modified in the original import.
See the preceding two commits for attribution and licensing details.
Signed-off-by: Asahi Lina <lina@asahilina.net>
Link: https://lore.kernel.org/r/20230224-rust-vec-v1-3-733b5b5a57c5@asahilina.net
[ Reworded for typo. ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>