From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f41.google.com (mail-ej1-f41.google.com [209.85.218.41]) (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 9D88E1AB6FE; Wed, 11 Sep 2024 16:34:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726072467; cv=none; b=jBhluybBEa4qSX47eul7R3aXoFaktWmhhhS+YO7ZvFx64TmNCTMdRpX4agSHZsSIcQV/BAQsA0t+fOrUlH6HISh/z2cybnzOXJa7Hr6Hks8nGzLoFHHQxAy9iLHr6QuWIBxjE/UlZmRlWIowM1/op0PleJfAgTLsok4K1HlscM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726072467; c=relaxed/simple; bh=xgZK/jw8ZlQXj8cIxR0W7ybGVnlcP1lJNS+9Q/l9a0s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=B51+nyUZFg+aO8px768aLfBA0no0hGKQN4XzHTeBRRdYuMXDJMe3jSeBn87HlIqjRq8QksamF4ShsdWQQapPUIJWrwNOFGGuu3p1seL1n+u9Kr2M5wuD58TXQKHenpp20FK3Qbg4afyn139swG9ZDRJSwAo2LfAdUbJ5bTrOnd8= 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=Kvfx9mF3; arc=none smtp.client-ip=209.85.218.41 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="Kvfx9mF3" Received: by mail-ej1-f41.google.com with SMTP id a640c23a62f3a-a8d4093722bso5583766b.0; Wed, 11 Sep 2024 09:34:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1726072463; x=1726677263; 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=Kvfx9mF3sJfmfjZZ+a2nYDQK9YPTkyOvQS5Z39s63fTyatNtNsuWfl43ujvpj0CSjc RAlFe0z7yyOOda2YRPkty7WWvMZbg3TJkHikkljF2lCqPiH4Ssyt/n+kNKvv84W8IfjL RCBpKHUM6QNmKCVuyh4xq/mygh02F21dG6tjB8ApQGgbliZyscTNIzVgxyo0mhBzK/Dl 7+1fsYJ33FFYVjRlmCT8O3GuJkYPj6+aNKCTE56BLiiXUrBgHhRJQCSG6S5VKhRoTyil kxCy01XRGEO77B/occxn/aRZc21jk0Sc4ADETUl0BKo8HffoEVd7EREj9fPjnAnxDaAK UpmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726072463; x=1726677263; 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=J6hy3G7TTfzHCuebD79n8UWsS8YW5VLszbFKZNeBuwdmiRVHWbBH1yyyQxBHAJunPw wOeXzp4uZr7AdF0v6DkmXRWPf9FlEzMlIFDLT5r1Kv4ydujG0j2MUNW8vS825w/JlHwI CAtG8uiuDS8cStEkTqf2Gex/h1SjHqbQEPU7wIQqKY/0sWQ5Wxzm35z44e0TAJBzI29k bGbzUGsFjP4iUpWjQ+bUNU9r/u8+3FsxQvFVxjt3iYWQEvGx7Vh0aspKhmFzZmdVvsU/ afYjBwkrBFp6vTupXQIBshMkqlADCKNlBTVQdZU+ROlT+JKyWaxDdxw64SkMmCddrpFg Iyew== X-Forwarded-Encrypted: i=1; AJvYcCVAcV3pCWZ8rDYqdFR/vBgfMdW1AclsG5TYNrwUlaBxDXLMLDxZFKIR6fsMoT+4Jl32JIoCUOvlwPqvfw==@vger.kernel.org X-Gm-Message-State: AOJu0YxfEqOIsDvSb1JxU4aZTnEKV4AJqOnlUsi3Zt+I4qYvOQOpTJXA b6y8t9La/VhzdOKI1IHZyveXYFqXj4oYZW3nRJaFmNQuyXYOubQno6ZFedPO X-Google-Smtp-Source: AGHT+IELcXHRTUSdLyLG5jnLYvW4/fqCNo1EAgwvWA0FaGjFDUj4/njuzwhpx/wmLaysANwmyDI4Hw== X-Received: by 2002:a17:907:2da3:b0:a7d:9f92:9107 with SMTP id a640c23a62f3a-a9029690793mr5422666b.58.1726072463487; Wed, 11 Sep 2024 09:34:23 -0700 (PDT) Received: from 127.0.0.1localhost ([163.114.131.193]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a8d25c72ed3sm631820866b.135.2024.09.11.09.34.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Sep 2024 09:34:22 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com, linux-block@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig Subject: [PATCH v5 2/8] io_uring/cmd: give inline space in request to cmds Date: Wed, 11 Sep 2024 17:34:38 +0100 Message-ID: <7ca779a61ee5e166e535d70df9c7f07b15d8a0ce.1726072086.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