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769b0f1c82
In preparation for introducing support for more reference types which have to add and remove reference state, refactor the acquire_reference_state and release_reference_state functions to share common logic. The acquire_reference_state function simply handles growing the acquired refs and returning the pointer to the new uninitialized element, which can be filled in by the caller. The release_reference_state function simply erases a reference state entry in the acquired_refs array and shrinks it. The callers are responsible for finding the suitable element by matching on various fields of the reference state and requesting deletion through this function. It is not supposed to be called directly. Existing callers of release_reference_state were using it to find and remove state for a given ref_obj_id without scrubbing the associated registers in the verifier state. Introduce release_reference_nomark to provide this functionality and convert callers. We now use this new release_reference_nomark function within release_reference as well. It needs to operate on a verifier state instead of taking verifier env as mark_ptr_or_null_regs requires operating on verifier state of the two branches of a NULL condition check, therefore env->cur_state cannot be used directly. Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20241204030400.208005-3-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.