Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp3692167yba; Tue, 9 Apr 2019 02:45:37 -0700 (PDT) X-Google-Smtp-Source: APXvYqzmeAtOaqpHtLI67oIUUkwt5sL0m0V6+hk6nmpPyE53Z67T2HgHZqOYgQm58u8Xp1Mi+Ifw X-Received: by 2002:a62:59cb:: with SMTP id k72mr35983391pfj.111.1554803137310; Tue, 09 Apr 2019 02:45:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1554803137; cv=none; d=google.com; s=arc-20160816; b=TGf/unAl8dVREZvhSPyqgGxC45jmmhT4G4SxNoeVdbe2THAE1A83zw0Hl0rvE2gToy GRhbXcrenpS1utb5jHwhmm+s3ghyHS1Vyweyo4JtwE1Tnafa+tbMTyymyO6Pg9qK6yh0 Oq54l/zeMQmMJnCCPd2X/nlwRV9Zhm3j6GXj31B/KQxbiOLuNkRfMEtzmsbRNv9Gcnrp YHQztmxiTdQ/LcODEjO3sr5qtqOZjGDu1CwVL8mTVAyFLWV0I6T36BbqKflW2ClGg2eG p1pK3N7EiSJdDK8CV7evNscUutFKEe8y9qC3qyl2Zsy3ZTxsVTb2de/hS69sWZd4FSZr p/8w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=zx6C5JsUe6faTo75OXfPQ0cJ9akfAT5lqwFOCOcI+wE=; b=o9BTriUmiSvQKnUHftYRRvqsJMm5opU1nsRb59vpvZoBnv35Mw0HkYyOsjHPQJMYxr pQklgUfLcqGgBLPxWZFhdKuIq2rapGdUsxqGzhQy32SlATiwzHxWewBqJlILwRmvbZau gVqZ4scjeLWlf1TaoDdL3QYWbv2rvq0qCJo8ocI5gPdgFv8jF7hScTdzoUN0eKP9Eewy WcZeIC6GJgGYnAlIqKpU1PRpk2kOT0rGJ6BclxwsSe1Qg2tTvDL3QxogtBijxqsvUn++ gPPEFtES5M+INwwUVNNx1x9lSD21EeZmLqy7bf4AsmGjcVsLZrZUYJKqaX3NvFYuSt2g wxCA== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=heyQdx+m; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h20si23847098pgn.69.2019.04.09.02.45.19; Tue, 09 Apr 2019 02:45:37 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=heyQdx+m; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726711AbfDIJoA (ORCPT + 99 others); Tue, 9 Apr 2019 05:44:00 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:42432 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726035AbfDIJoA (ORCPT ); Tue, 9 Apr 2019 05:44:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=zx6C5JsUe6faTo75OXfPQ0cJ9akfAT5lqwFOCOcI+wE=; b=heyQdx+m0q9w5BcVNQYiGF8Bq MM1HPWbF55jwpQav54D5Iq9hp2gEV9yLkq0YJuatvCJDpmDJ+8jo5O8/nlsqys8cp5/0XWrv4Jyno 8y6Yb0WoRA+wuBK2cU+DV3s0gYUSruPaE1WQvVpmBGR27W/lu4WsmxnBwDrNpf99S8NBCk798eGlK 8u26+aCePJMhJl2xl+0fAPWiCMYpMNjjXl7+njxGw3qu8y+FUunUKMRfYps9yfP1Sk75xCOj0zGVc QomwpniASUMBYI+chAg51cipw+sW/Rx+GrLtpBY2j/5UscjTUnW4VusELJVwpTTRnV2P7g1sqYcwN b6sBUncQQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1hDnIL-00068F-NJ; Tue, 09 Apr 2019 09:43:57 +0000 Date: Tue, 9 Apr 2019 02:43:57 -0700 From: Christoph Hellwig To: Jianchao Wang Cc: axboe@kernel.dk, viro@zeniv.linux.org.uk, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH V2] io_uring: introduce inline reqs for IORING_SETUP_IOPOLL Message-ID: <20190409094357.GA23530@infradead.org> References: <1554787314-27179-1-git-send-email-jianchao.w.wang@oracle.com> <20190409093717.GA15391@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190409093717.GA15391@infradead.org> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 09, 2019 at 02:37:17AM -0700, Christoph Hellwig wrote: > I really don't like the idea of exposing this to userspace. Is > there any good reason to not simply always allocate inline request > up to a certain ring size? Sorry - misread the patch. The flag isn't actually user visible so all is fine!