quoted

Scope-based resource management became supported for some
programming interfaces by contributions of Peter Zijlstra on 2023-05-26.
See also the commit 54da6a0924311c7cf5015533991e44fb8eb12773 ("locking:

			^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

SHA ID here just needs first 12 digits not the entire string.

See also once more:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.17-rc5#n109

quoted

Introduce __cleanup() based infrastructure").

* Thus use the attribute “__free(kfree)”.

* Reduce the scopes for the local variables “buf” and “pglist”.

What is that required ?

The needed variables should be defined in a succinct way.

quoted

* Omit four kfree() calls accordingly.

Right.

The commit message should be re-written with little more
context from arm_trbe_alloc_buffer(), after describing
the new scope-based resource management.

Which background information do you miss so far?

Regards,
Markus