From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2244756-1516821860-2-11396118291923882642 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no ("Email failed DMARC policy for domain") X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: X-IgnoreVacation: yes ("Email failed DMARC policy for domain") X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-api-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1516821860; b=fo26arExoRIHahi5pfcKiNNI52d1pelpPSzzRU4i/7V3zrs r8Q8h7Qe9+aw5/JCwZeXYAVMj+5x7kcSb6JXsMU6cJt45HAtuDJGiUFSqJmzjqX/ zpMljxe9YcgtwMZ57UkTmOy9uHqGbGDJuzc6tz7Xtb3eeECAoF2h4JRXXmv1X5l2 MLEGHB1htIGTrJ1AAjMEoB+UZ9VjYS2M3A80HHLI7HrIS+QDCwLaEW/eEDQL3aT2 5iXeKAVvb6RqA7nbn8QC3xfrbbFVhL15twhGuiRZbMDWHaWUUYsw0Uzd1rSvrahO RXtBxBuHb7RMbo2jGOI0f8qg3iaZZHGLMUfarvw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:references:date :in-reply-to:message-id:mime-version:content-type:sender :list-id; s=arctest; t=1516821860; bh=JE6Nh6z05hdJPbwa9iU/iiLh4s QjfhiWlY918QkXXak=; b=DRSG3YsC2DX8wI2tYcBxoFsalfazFUwrJKISfoH2YH yLuggqTr3ookfS70iPHuSGWnuNt+dm8pmsbNy/58A6J8K70qu8nN1qddXeown2/k Gsc66A+YKVW76cASJ6EalQ7mPPvKrWikR4YDIP3/sFA+X/sOrTUSq7IZz/sEmmAw q6cH0G3cSo7EQl7QcruutfKxi/kbAYD9TdMa0jR8dXteA2YCmx8bT3rzOPCRIbLB pNEA+WaYyBEKppATfxm3rvuTPLcxF094W8nCEuyFs7zK5eVQSdlJmmLSkPb45GBa zDlchE04IFRn9keH3C0yx+LZDUArdbCfV9/pcNhym7Wg== ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=fail (p=none,has-list-id=yes,d=none) header.from=redhat.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=redhat.com header.result=pass header_is_org_domain=yes Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=fail (p=none,has-list-id=yes,d=none) header.from=redhat.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=redhat.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752637AbeAXTYR (ORCPT ); Wed, 24 Jan 2018 14:24:17 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38774 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752622AbeAXTYP (ORCPT ); Wed, 24 Jan 2018 14:24:15 -0500 From: Jeff Moyer To: Christoph Hellwig Cc: viro@zeniv.linux.org.uk, Avi Kivity , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 14/36] aio: implement IOCB_CMD_POLL References: <20180122201243.31610-1-hch@lst.de> <20180122201243.31610-15-hch@lst.de> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 X-PCLoadLetter: What the f**k does that mean? Date: Wed, 24 Jan 2018 14:24:13 -0500 In-Reply-To: <20180122201243.31610-15-hch@lst.de> (Christoph Hellwig's message of "Mon, 22 Jan 2018 21:12:21 +0100") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-api-owner@vger.kernel.org X-Mailing-List: linux-api@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Christoph Hellwig writes: > Simple one-shot poll through the io_submit() interface. To poll for > a file descriptor the application should submit an iocb of type > IOCB_CMD_POLL. It will poll the fd for the events specified in the > the first 32 bits of the aio_buf field of the iocb. > > Unlike poll or epoll without EPOLLONESHOT this interface always works > in one shot mode, that is once the iocb is completed, it will have to be > resubmitted. > > Signed-off-by: Christoph Hellwig Acked-by: Jeff Moyer