From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f177.google.com (mail-pf1-f177.google.com [209.85.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 85D13273F9 for ; Tue, 24 Mar 2026 00:10:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774311015; cv=none; b=SkFmRzwuwWqgbz/fxfdu3E9HBqdVXhzHOtdLdHjTPYnpyIWUD1fVC27GOCgQ3ft5mC/jigB4l+92djz4cl/sqKmczvZla1/8kFgtL8FmqGIXEVJnSiJ/tiEhcZdbsX4tVmnHAk/2Xvd5EILMIeXxyCd1dyMViFOy3rRuHGHqpm0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774311015; c=relaxed/simple; bh=IbAw3ZLW1hZPVagabh74ljI4jFpdYVS7ZuikBJ37iHU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=O3lpbTJjwS116VaTKS4pCtC5aA3umQlKX+7q7eySZioDizrgm5ZQh3lkck5aBDHJBmwAOlOi4p7HI8SILM/4kG/D6Vkk0KVUWIKefSRsmG5beKemY/SFo5oRu3YiNQnvTAVrdTD/QVWVDcfgtffYXcL8071/DycmavMyobzJgM0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Un0uSQQp; arc=none smtp.client-ip=209.85.210.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Un0uSQQp" Received: by mail-pf1-f177.google.com with SMTP id d2e1a72fcca58-827270d50d4so710585b3a.3 for ; Mon, 23 Mar 2026 17:10:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774311014; x=1774915814; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=qiGg9e0CMeWQCnXZFqT+SmHuI/gmt7YL2vhCkuolLXc=; b=Un0uSQQpTwmjM9J82LajaTkX6Rj1hAw/Io5GqQL8lpztaEH6fFAbrnELiok1GRmfC/ wtwoy90cYgMM/QA3ici6rrmpbLw0E3x2SdKyrWJba3i6cm2wRbzB6C9N8x6tpPJofhWM 3gXWIBaMzYDVTM40ZksaLxhggvrfMOeVEqvTq8x8E4cNUI925W54yShUVlT/C9mTWOSC ATurtbhQ5a14zihAN+PQaWYToHNV7l4tRvR/N3EJMJNamdQBijsBwYgwMz4CVGDBqypo CaX1g8CIjVIBWhLrT8bn3fajwtY/iX2bum45Bmk38qel2H4n8nrA5DnSqpKhkM/pY1W6 GlMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774311014; x=1774915814; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=qiGg9e0CMeWQCnXZFqT+SmHuI/gmt7YL2vhCkuolLXc=; b=gyE+if4G1o85wfYjZYAlOQquW0Xu8dAdmll9D0bwTTcQ8O4Dx8Pr6sUJIFzWZGuFLf kTESkouHNKqHUYbLUiQB/3GtkZ3hN2M69Df1uq0GF7x+o/6Eb8ke/wUOgAK78CpXyBX+ aishzQ6it4KzSrDG/kanHHO7p1jhoLy2x+yP2s/Hrt+wFltwfbaz+7/yUdPPuXHtWBSC nEnz+LqHWOj7NMziuZZNdY3b9fA3bGPm6UskYxeXfdv/XSs06Mp980p08sc+hP8L0yio 1X9IdwiBDbpF6HCDAzYDG4IA9INEmCaclBQm1shYTZaEsmAndpw39q+6doQQCR5ubssN nf8A== X-Forwarded-Encrypted: i=1; AJvYcCXFuLp7qZosHclm/TQKvuN2SDyXHnT6uCMZGyZbhjZzmFFcKywPL1v7NDyRhdbEuS6FqOidhmvfrA==@vger.kernel.org X-Gm-Message-State: AOJu0YxxjWmzippyJvNKtpql2ae1sJXYdV8rvPx0c7nCLbwJyrUTlb+I 3wUnGCL2csYjIG0ADvSX6vE1ax2Oxyc5vJlZfgpY5xMpUB5uAVjKd62zaB12pw== X-Gm-Gg: ATEYQzyBSBdMb2HmVqBPQZcaeSsHTQw9B2FixbjILkquwDu5KVhtlO2z4Y0vHDg9jQH U86TN7z8N2Fg3nE41YgWZs/26jZUoc4xUZuy3aRbMq9CDGRbGfxczXyx0uBbAumaHGmO3I8jf2M +2bfzQPlA1+DtZPwGpj6dLRaNyv0t/7cpeBRQLTRyghWTjOmSwGR3slJjy2stjEFcWzNOOeY/Qw iF+5Mjtr+lBasY29bT/3rO3Coj26VGcPh7diSHIOwTDcrEAuxm+ku3BpVvwO4hPVcmYkqRGmAth a1YSUlT4RPSuOF7G1PmwXpOpMzpIPe7Ykh6cMBLlJJQKJkpw0DDlurAs6YUaWTJ1afS+4SAzw8q JZUeBApl6vyAHBN6eFjwwhpsJ4EPa9qx+8MqhzVP2SufFC25DToz9GjqEcaOcYMw9zX6mejoyxU UqKLUTpvpgn1LJA8wRAA== X-Received: by 2002:a05:6a00:3e07:b0:81d:dd3a:b8fa with SMTP id d2e1a72fcca58-82a8c334e6amr12310586b3a.50.1774311013760; Mon, 23 Mar 2026 17:10:13 -0700 (PDT) Received: from localhost ([2a03:2880:ff:44::]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82b03be31f7sm11980613b3a.26.2026.03.23.17.10.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Mar 2026 17:10:13 -0700 (PDT) From: Joanne Koong To: axboe@kernel.dk Cc: csander@purestorage.com, asml.silence@gmail.com, io-uring@vger.kernel.org Subject: [PATCH v1 0/5] io_uring: extend bvec registration and add mem region lookup Date: Mon, 23 Mar 2026 17:10:02 -0700 Message-ID: <20260324001007.1144471-1-joannelkoong@gmail.com> X-Mailer: git-send-email 2.52.0 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 series refactors and extends the io_uring registered buffers infrastructure to allow external subsystems to register pre-existing bvec arrays directly and obtain references to registered memory regions. The motivation for the patches in this series is to make fuse zero-copy possible. These patches are split out from a previous larger fuse-over-io_uring series [1]. The remaining fuse patches will be submitted separately and linked to. Thanks, Joanne [1] https://lore.kernel.org/linux-fsdevel/20260116233044.1532965-1-joannelkoong@gmail.com/ Joanne Koong (5): io_uring/rsrc: rename io_buffer_register_bvec()/io_buffer_unregister_bvec() io_uring/rsrc: split io_buffer_register_request() logic io_uring/rsrc: allow buffer release callback to be optional io_uring/rsrc: add io_buffer_register_bvec() io_uring/rsrc: add io_uring_registered_mem_region_get() Documentation/block/ublk.rst | 14 ++-- drivers/block/ublk_drv.c | 22 +++--- include/linux/io_uring/cmd.h | 47 ++++++++++-- io_uring/rsrc.c | 143 ++++++++++++++++++++++++++--------- 4 files changed, 165 insertions(+), 61 deletions(-) -- 2.52.0