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Wed, 22 Oct 2025 13:23:07 -0700 (PDT) Received: from localhost ([2a03:2880:ff:40::]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7a274b8b82dsm99075b3a.50.2025.10.22.13.23.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Oct 2025 13:23:07 -0700 (PDT) From: Joanne Koong To: miklos@szeredi.hu, axboe@kernel.dk Cc: linux-fsdevel@vger.kernel.org, bschubert@ddn.com, asml.silence@gmail.com, io-uring@vger.kernel.org, xiaobing.li@samsung.com Subject: [PATCH v1 0/2] fuse io_uring: support registered buffers Date: Wed, 22 Oct 2025 13:20:19 -0700 Message-ID: <20251022202021.3649586-1-joannelkoong@gmail.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This adds support for daemons who preregister buffers to minimize the overhead of pinning/unpinning user pages and translating virtual addresses. Registered buffers pay the cost once during registration then reuse the pre-pinned pages, which helps reduce the per-op overhead. This is on top of commit 211ddde0823f in the iouring tree. Joanne Koong (2): io-uring: add io_uring_cmd_get_buffer_info() fuse: support io-uring registered buffers fs/fuse/dev_uring.c | 216 ++++++++++++++++++++++++++++++++--- fs/fuse/dev_uring_i.h | 17 ++- include/linux/io_uring/cmd.h | 2 + io_uring/rsrc.c | 21 ++++ 4 files changed, 236 insertions(+), 20 deletions(-) -- 2.47.3