From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f51.google.com (mail-ej1-f51.google.com [209.85.218.51]) (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 02E021DC061; Wed, 4 Sep 2024 14:17:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725459469; cv=none; b=uQtEyH+9Zfk1oqk73puayT18SWv8KRA+8540zGJNsH8i2ynJw92fPj2pTqjhrMEwvQgBvKeEtTBF9YO+UJtLR2V0NoQg0tGak7lNuD1t9mXG94Y/jfCPBEAu7R+O0xIKtnJm/1oRnmxXNWPlmtOs9c1VANq4PE5blY3aFmDWsew= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725459469; c=relaxed/simple; bh=xgZK/jw8ZlQXj8cIxR0W7ybGVnlcP1lJNS+9Q/l9a0s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Dh3EvDk3Lo25T1Ehc5JXhdQzNnJ7foPpANQOqYpIZRlq31RkvMD9fa3m1o3EiYtnCEaMMDZ6Brcfnh4gn2uSrVRPzqMOqGbSHkl7Yp/WAisKVqdxPI2bH7hDpUVfZpyxxMc7usHCnTBPtJemdnTh2io6YqoQpq41v9uUYFR/LZQ= 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=ndUWntOq; arc=none smtp.client-ip=209.85.218.51 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="ndUWntOq" Received: by mail-ej1-f51.google.com with SMTP id a640c23a62f3a-a86b46c4831so775420666b.1; Wed, 04 Sep 2024 07:17:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1725459466; x=1726064266; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=yyZRXxiAI12SAMIbkwT8bn9l7S8e/TKEaLOeKBVDL1c=; b=ndUWntOq4XJuMpOUjj5eavzRr2ekQTut+8DfyAj0+sb33Es+BYAd6gWznWpmbnA4YN cpSuLENaxhzV90evVeXnKR+O7F5FfUroEZoZWAlXMizMbiaG20X9BvgwhQBAaXa2cRhd RoHjtjJd9xD7y+hPR6ij8pk8basOg80XDzXR4gkhq1VSV/YmWzoCLwtwg1IxXsvOn+Ch ngyWm3wZobfq5usju5jgMyzL1OIUS+rLj7+zGKV/hvTgYszIkbm84tbz/4YduStkhNei FBsi1qCSR4lPeVfMRJRakkIYcNGBAHDjuMTlez4hkiLAiRCC7brV2SUWi8F92d9J+ir6 Qmow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725459466; x=1726064266; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=yyZRXxiAI12SAMIbkwT8bn9l7S8e/TKEaLOeKBVDL1c=; b=IMJckxDeh7ps/PdQJ4ZWgnj/kRKIfvbuTjFp3xmZ7dVhophER5BGVG602Q48O9Ti6b f9F8PEoyYUAiuG150Iir9CPqd0tDZVzBu1xC2niv6NfARZMkm9fQ4zxW5NWxafN09ad2 AV1guMHQZL5RWfqksW3cMogjEZKuXx5RAjxOwQB48LGO8yK9YHJh+CukOV/1qJLVpG3n rDMbOk8IDMlC2sc0T3BLgg221hu0gNiE3QHXc2GnxjEV62psLsHx8qW1yg13iH+LwrAc jXZFlN2D6G4gMthKbNYCadMwSUZAYdY2UxqzPIsI0RuONI1ObRfVvIf5BAVQTzdr7Fwr oXZA== X-Forwarded-Encrypted: i=1; AJvYcCUZsMD+x/QaasOIIUC3GDqg46Vyo/GqaDVdSWw9cfmW+wK1YhFVPwLSnY0P9xMgni3cEkhBmWf8lW1rZw==@vger.kernel.org X-Gm-Message-State: AOJu0YxXYMlmTAQeyKuaxlqIA6Ji2z1+N/QCaiwGNfyxf1jSdiqWM6zQ aSlpzKgyzshjGsVIx9S4WYbXDO2bjW2UCs0aQC+BbbhLZ36ooeYtmlH6lw== X-Google-Smtp-Source: AGHT+IElud/tGXrs7q4hPENcWMYIZSj7RTtRqWMNx0QoFf5mcRK9CPIkT2ZU7thyj+ZNDXYdgCuEaw== X-Received: by 2002:a17:907:a07:b0:a7d:e84c:a9e7 with SMTP id a640c23a62f3a-a89d8848bd3mr1056922166b.53.1725459466090; Wed, 04 Sep 2024 07:17:46 -0700 (PDT) Received: from 127.0.0.1localhost ([163.114.131.193]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a8989196c88sm811160766b.102.2024.09.04.07.17.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Sep 2024 07:17:43 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com, Conrad Meyer , linux-block@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig Subject: [PATCH v3 2/8] io_uring/cmd: give inline space in request to cmds Date: Wed, 4 Sep 2024 15:18:01 +0100 Message-ID: <7ca779a61ee5e166e535d70df9c7f07b15d8a0ce.1725459175.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Some io_uring commands can use some inline space in io_kiocb. We have 32 bytes in struct io_uring_cmd, expose it. Signed-off-by: Pavel Begunkov --- include/linux/io_uring/cmd.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h index 86ceb3383e49..c189d36ad55e 100644 --- a/include/linux/io_uring/cmd.h +++ b/include/linux/io_uring/cmd.h @@ -23,6 +23,15 @@ static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe) return sqe->cmd; } +static inline void io_uring_cmd_private_sz_check(size_t cmd_sz) +{ + BUILD_BUG_ON(cmd_sz > sizeof_field(struct io_uring_cmd, pdu)); +} +#define io_uring_cmd_to_pdu(cmd, pdu_type) ( \ + io_uring_cmd_private_sz_check(sizeof(pdu_type)), \ + ((pdu_type *)&(cmd)->pdu) \ +) + #if defined(CONFIG_IO_URING) int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, struct iov_iter *iter, void *ioucmd); -- 2.45.2