From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D9EFC4338F for ; Sun, 25 Jul 2021 19:48:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 77C4060D07 for ; Sun, 25 Jul 2021 19:48:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231321AbhGYTI2 (ORCPT ); Sun, 25 Jul 2021 15:08:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60522 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230116AbhGYTI0 (ORCPT ); Sun, 25 Jul 2021 15:08:26 -0400 Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 20C75C061757 for ; Sun, 25 Jul 2021 12:48:55 -0700 (PDT) Received: by mail-wm1-x32b.google.com with SMTP id f14-20020a05600c154eb02902519e4abe10so619350wmg.4 for ; Sun, 25 Jul 2021 12:48:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=dPwtgBNuuOSSzOxEmuo0cqlkiRAm0dVGX7esAZSs5jg=; b=NC5vMcuXq5HPOe2sxOKWQq69O6y/DsqoDCZrqURHkOILPc1Med9eJijAOTsOXmSBjh mhz5ecgSpJaKq3uIQmYDQIy2LaP9+kq1BoyAq0ntlT0cqommlIUweBVTK7mI971DSGTV Kfl6grMJUmTME70NMf71sQLLTveTQ3MM4H4L84cpcdev7RqOuYuPLuxw4ORAG7iml8Jx AZEumwyg3eaxsWCfRDznToYj7e6IWsvOJp5StQb1W36ZO18OwrrRNWdUP8FPqBeXIYpI HAhBx0iyk08jNxGAgIwxNrq+ELN8kAhSF4aIxdtcPK8THT6FQ7MzQwRSRqr4G/eYhmQ+ 0HOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=dPwtgBNuuOSSzOxEmuo0cqlkiRAm0dVGX7esAZSs5jg=; b=iZSeaFEvy8NiR2DXXiL50Np6bVPTwTDhQ8I37HSQCNit2aM1qlSa9uwuam9DBohc1X Bk/tImwOwvk4pVrMztEu9TME3eFjX4HllekQl0yrg2r6OFyxhaLGpuVe6enUMwv/bXXP HI4ypKdiZfnt4U6sCu+LYXeUl6Nv6nwPA8lXV/6/oQCTDOdPkawBQTWCr0rI4qtptYQH o0CPoln1BjyjjA9A7jLKAxnOzKpPIMPZ7vsA909xNAwOesH2JrS2Lt/qxdJobTIb6LGj AXfbKZYiZl0pqo80SEoTrUvUdzVUxeK8laWgZJGslOhU5VzqL+8K4W0glE4CXhRUDnRc ZP8Q== X-Gm-Message-State: AOAM530P+4gTmTct1OW+c7enOxkspK4sW74032aTYEhPnjZSNWyeeBov ELz61NGZlQyB3e394XVy7WgnNNeLxnM= X-Google-Smtp-Source: ABdhPJzlG6MTvCMPSsB5dxvjgxgODlSaM56GWcdm3Oylh8Ya1No1e6I+t2uPXIIhiF+CAkbF/FYgZg== X-Received: by 2002:a05:600c:4fcf:: with SMTP id o15mr23626975wmq.116.1627242532495; Sun, 25 Jul 2021 12:48:52 -0700 (PDT) Received: from [10.8.0.150] ([195.53.121.100]) by smtp.gmail.com with ESMTPSA id c10sm33645116wmb.40.2021.07.25.12.48.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 25 Jul 2021 12:48:52 -0700 (PDT) Subject: Re: [PATCH] pipe.7: also mention writev(2) in atomicity sexion To: =?UTF-8?B?0L3QsNCx?= Cc: linux-man@vger.kernel.org References: <20210724194625.2ruegq4a5jwlnyr7@tarta.nabijaczleweli.xyz> From: "Alejandro Colomar (man-pages)" Message-ID: <51304a7e-1dc2-d505-bae6-c096876606b3@gmail.com> Date: Sun, 25 Jul 2021 21:48:50 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210724194625.2ruegq4a5jwlnyr7@tarta.nabijaczleweli.xyz> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Hi Ahelenia, On 7/24/21 9:46 PM, наб wrote: > writev(2) notes that buffers don't interleave with other process' > (a reasonable question to ask), but points to pipe(7) for an exception. > pipe(7) did /not/ mention "writev", "iov", "scat", or "gath", which are, > in order, reasonable search terms: this was confusing at best and > alarming at worst > > By mentioning writev(2) in the heading, we clearly note that this sort > of interleaving behaviour matches write(2)'s and isn't a concern > > Signed-off-by: Ahelenia Ziemiańska Patch applied. Thanks! Alex > --- > man7/pipe.7 | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/man7/pipe.7 b/man7/pipe.7 > index c3210320c..29f6cf6cb 100644 > --- a/man7/pipe.7 > +++ b/man7/pipe.7 > @@ -246,6 +246,8 @@ limits; see BUGS. > .SS PIPE_BUF > POSIX.1 says that > .BR write (2)s > +and > +.BR writev (2)s > of less than > .B PIPE_BUF > bytes must be atomic: the output data is written to the pipe as a > -- Alejandro Colomar Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/ http://www.alejandro-colomar.es/