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b=V14Teuym/BTICjj06GX/CguKshYW0qhHPZ8mASyUXBhZ+kn/vrv8I9k7og2EsFjsU oE56s0i4z9OjB0cy8uThGQwgfkpB8ck5evKRR1NwuP6oCDKmGxm9MM/DzljbJ5zi9o 4UJS9phIW/XSrkxAuFw9j9UnM+VcfDmcZOoQRdjxkc78eqflUyH5ygIUEWcCbq1O7x LcG+eiRefLnbIaAVe4zZbPwxZ11CeNCojW2ILF5inBqaGqRutMrwzY30q2kyIIefI0 QCM6/NHPVCxf09NczrpQ9fFai4sB6zOPdIjTI8eed5oo38NauriLcUSfhV7rdKv3fI NQhO6ltep+iLA== Date: Sun, 17 May 2026 20:26:25 +0300 From: Mike Rapoport To: Pasha Tatashin Cc: linux-kselftest@vger.kernel.org, shuah@kernel.org, akpm@linux-foundation.org, linux-mm@kvack.org, skhan@linuxfoundation.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, corbet@lwn.net, dmatlack@google.com, kexec@lists.infradead.org, pratyush@kernel.org, skhawaja@google.com, graf@amazon.com Subject: Re: [PATCH v2 04/10] liveupdate: add support for linked-block serialization Message-ID: References: <20260514222628.931312-1-pasha.tatashin@soleen.com> <20260514222628.931312-5-pasha.tatashin@soleen.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260514222628.931312-5-pasha.tatashin@soleen.com> X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 48E2D180007 X-Rspam-User: X-Stat-Signature: r5z3komcoi4kijnd984qgxmw4ia9t337 X-HE-Tag: 1779038794-992344 X-HE-Meta: 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 KOlkMP0e 1x49pnRFO8N2sZyZy4jCOkaUSs/cyqjjoT4nqfRn3MH6pz+JmejgVLDVEclOgG3LFrv38gIgR4hJRjn/Lu+h/0Q0cQcunXY25XHfVmPOA7wA1xrUEgBP/cmpOjJk/Cg5t7vTiRKKacX+yoaC1RVeSuIsokgJu7VJoiTRUFtZkY2h0udt5GWmQmR17R2sKgv+yBFqBByQOCdlqGNqPfSoh7YCOmw7+LBJVvoTXVSAYa1070eV/0VL03r5VRLZpnrP0fKNi+Id2+liKFhnreSsMfQCHUzMqe5ySjXiwAJPa2W1bd/bf0cZhzMVfmw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, May 14, 2026 at 10:26:22PM +0000, Pasha Tatashin wrote: > Introduce a linked-block serialization mechanism for LUO state. > > Previously, LUO used contiguous memory blocks for serializing sessions > and files, which imposed limits on the total number of items that could > be preserved across a live update. > > This commit adds the infrastructure for a more flexible, block-based > approach where serialized data is stored in a chain of linked blocks. > This is a preparatory step to allow an unlimited number of > luo_sessions and luo_files to be preserved. Shouldn't it be a part of KHO? > Signed-off-by: Pasha Tatashin > --- > Documentation/core-api/liveupdate.rst | 8 + > include/linux/kho/abi/luo.h | 22 ++ > kernel/liveupdate/Makefile | 1 + > kernel/liveupdate/luo_block.c | 388 ++++++++++++++++++++++++++ > kernel/liveupdate/luo_internal.h | 57 ++++ > 5 files changed, 476 insertions(+) > create mode 100644 kernel/liveupdate/luo_block.c -- Sincerely yours, Mike.