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Hou Tao says: ==================== Fix the unmatched unit_size of bpf_mem_cache From: Hou Tao <houtao1@huawei.com> Hi, The patchset aims to fix the reported warning [0] when the unit_size of bpf_mem_cache is mismatched with the object size of underly slab-cache. Patch #1 fixes the warning by adjusting size_index according to the value of KMALLOC_MIN_SIZE, so bpf_mem_cache with unit_size which is smaller than KMALLOC_MIN_SIZE or is not aligned with KMALLOC_MIN_SIZE will be redirected to bpf_mem_cache with bigger unit_size. Patch #2 doesn't do prefill for these redirected bpf_mem_cache to save memory. Patch #3 adds further error check in bpf_mem_alloc_init() to ensure the unit_size and object_size are always matched and to prevent potential issues due to the mismatch. Please see individual patches for more details. And comments are always welcome. [0]: https://lore.kernel.org/bpf/87jztjmmy4.fsf@all.your.base.are.belong.to.us ==================== Link: https://lore.kernel.org/r/20230908133923.2675053-1-houtao@huaweicloud.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 Restructured Text 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.