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Tue, 9 Sep 2025 10:48:51 -0400 (EDT) From: Pratyush Yadav To: Jason Gunthorpe Cc: Chris Li , Pasha Tatashin , pratyush@kernel.org, jasonmiu@google.com, graf@amazon.com, changyuanl@google.com, rppt@kernel.org, dmatlack@google.com, rientjes@google.com, corbet@lwn.net, rdunlap@infradead.org, ilpo.jarvinen@linux.intel.com, kanie@linux.alibaba.com, ojeda@kernel.org, aliceryhl@google.com, masahiroy@kernel.org, akpm@linux-foundation.org, tj@kernel.org, yoann.congal@smile.fr, mmaurer@google.com, roman.gushchin@linux.dev, chenridong@huawei.com, axboe@kernel.dk, mark.rutland@arm.com, jannh@google.com, vincent.guittot@linaro.org, hannes@cmpxchg.org, dan.j.williams@intel.com, david@redhat.com, joel.granados@kernel.org, rostedt@goodmis.org, anna.schumaker@oracle.com, song@kernel.org, zhangguopeng@kylinos.cn, linux@weissschuh.net, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, gregkh@linuxfoundation.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, rafael@kernel.org, dakr@kernel.org, bartosz.golaszewski@linaro.org, cw00.choi@samsung.com, myungjoo.ham@samsung.com, yesanishhere@gmail.com, Jonathan.Cameron@huawei.com, quic_zijuhu@quicinc.com, aleksander.lobakin@intel.com, ira.weiny@intel.com, andriy.shevchenko@linux.intel.com, leon@kernel.org, lukas@wunner.de, bhelgaas@google.com, wagi@kernel.org, djeffery@redhat.com, stuart.w.hayes@gmail.com, lennart@poettering.net, brauner@kernel.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, saeedm@nvidia.com, ajayachandra@nvidia.com, parav@nvidia.com, leonro@nvidia.com, witu@nvidia.com Subject: Re: [PATCH v3 29/30] luo: allow preserving memfd In-Reply-To: <20250904173433.GA616306@nvidia.com> References: <20250807014442.3829950-1-pasha.tatashin@soleen.com> <20250807014442.3829950-30-pasha.tatashin@soleen.com> <20250826162019.GD2130239@nvidia.com> <20250902134156.GM186519@nvidia.com> <20250904173433.GA616306@nvidia.com> Date: Tue, 09 Sep 2025 16:48:50 +0200 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 4B65F1C0007 X-Stat-Signature: muwwizj6x4iq77f18yuz86k53grx8swr X-Rspam-User: X-HE-Tag: 1757429344-703526 X-HE-Meta: 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 r524SFf+ 8GnM7CsRe8DZG8g8CTVqU3xJRGLOMv8RSTwlqAhZ3DdcOrh/peXVSDFy7ED9zogt+ayKjfUA19zjDMTVQ+/f0YOO1wWASy7zgKw28clrCt2k81+N97NQDhymw6QBD8NLYhAsej5kdFisG7VQ/8eHAvNf1VtyKn23IQl4IQBpyo7yCmkXvj3dhERqewKfCUXnS8ua/ecUE1kcIvw3+Ta9YBzutomyfFevmIpe2i80sIAbmIFl1QmAzrMn9Z8Ute/QIAAxocgDYldkufi86Y/7NOMnGaHwlDP2Z3eQePrb4NbyrCO4br/zJ6gT0DCU+HYEikGWmI0vWgXpxn8q6Z30UF3ONwZRKmpw5nGHKmUfLgClO6B66EB4Jq4z3EHA1wrrBM8PdMdGgYUpUZw8= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Sep 04 2025, Jason Gunthorpe wrote: > On Wed, Sep 03, 2025 at 05:01:15AM -0700, Chris Li wrote: > >> > And if you want to serialize that the optimal path would be to have a >> > vmalloc of all the strings and a vmalloc of the [] data, sort of like >> > the kho array idea. >> >> The KHO array idea is already implemented in the existing KHO code or >> that is something new you want to propose? > > Pratyush has proposed it I just sent out the RFC: https://lore.kernel.org/linux-mm/20250909144426.33274-1-pratyush@kernel.org/T/#u [...] -- Regards, Pratyush Yadav