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Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Shuah Khan , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/4] mm/slub: use a track count for user metadata sizing Message-ID: References: <20260813160825.73031-1-pengpeng@iscas.ac.cn> <20260813161059.73855-1-pengpeng@iscas.ac.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260813161059.73855-1-pengpeng@iscas.ac.cn> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 5C99640003 X-Stat-Signature: is5rjwgnfftt4r3bxz3rntzkyxargubp X-Rspam-User: X-HE-Tag: 1786961089-295262 X-HE-Meta: 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 sESVTZrT 6ovGN8hPPojJ2nsgxjisg0Ch+Ng/3VkXM4mwAGkq3/qnmGAZ2rKE940ixJ0LWJjIho+JXBOKtDfy0w4HL4RIgnthH1/WSXwjMlaB8ZmgnMP2DazrJVJF2WPFp+paE8N/zrWhy6QItgQrj+Pxgj+WPunaBgbpl012U/+vYrG2szDUYVjq8+id53Odx3DGWhnbxvfb4h9beNEmeX0C7xYCCFsM/DnfY7hrV4Wr6CPQH2X8cL1Z1QmfS+NLe+kcsFm9GqlW2oJL3ISbdkg4= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Aug 14, 2026 at 12:10:59AM +0800, Pengpeng Hou wrote: > SLAB_STORE_USER metadata consists of allocation and free tracks, but the > object-layout calculations repeat the literal count at each offset site. > > Add TRACK_NR to the existing track-item enum and use it for metadata > initialization, original-size placement, object-extension offsets, padding > checks and cache sizing. This is a behavior-preserving preparation for > extending the tracked history. > > Assisted-by: Codex:gpt-5 > Signed-off-by: Pengpeng Hou > --- > mm/slub.c | 16 ++++++++-------- > 1 file changed, 8 insertions(+), 8 deletions(-) LGTM. Reviewed-by: Hao Li -- Thanks, Hao