From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2673578-1516315603-2-8991368719253225795 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no 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: plain='us-ascii' 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=1516315603; b=Zop8RWJWc3UOu0Iusnan6GnM450ge1rI4YcFTA2cKTLFlNV DXoUY3KK+56auxQqKBZpUhL07Nnq4k40tP1Skb6cDxEvzmCE6OvJtsAeoy/XE39J ZHBkUMPL6v2QMPR0KsugCPzXCrUhlK9YM5eE4t2q+H+z79525+nPQHHIhkH0gBvS hxEA6XSdKX7KPQKpux8EEUNEiHmgxv7swYAho6H+53uQllEnB8eQfYEKPHOO2DID R7zNAntKMc7AvW09cZ0EHDArz4ISQHPU4/f/p63PHs/XJJ4Wl4SX/jlJAVylkqqs LN6vysHTOMECOQKEVspD7T/QiaD4ZaI5Gp14rKQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to:sender :list-id; s=arctest; t=1516315603; bh=c5mZcQ+aDZpBye84VCTcPpqqYP +bu756YeLbiP8pHMo=; b=P4mkoywD4g1KcBr7jGWPFO2HANOtrUt++KUzTPMjiz eESE3HzAxlk0/202Y7Sb2BT6cPzvLuuPzDHh4uEsTRyrLC03BhO7KssHarQ7lz4p UUTT+udt4tLXZ2E0yavmNbRhMtqnneTXWwplL8xLspxHGtVG9hf7/Ks/kdgErYhQ r2j4V5Qw0wdZ8jeTf2IOWf7hpbzlorRsmVbbaDTFfu/7wmr2Kp/PSPgClN2MXaPU yICxP/BU21T8BB1hn2M1AdeSur3ofUL6k7qHLKL7QnZUDoKanNKCw8Wgmm83XXgJ DCDcm87ypOVDO2YFR9HCrxi6ekLLoX0htc8AT5C//A6g== ARC-Authentication-Results: i=1; mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=fromorbit.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=fromorbit.com header.result=pass header_is_org_domain=yes Authentication-Results: mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=fromorbit.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=fromorbit.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932131AbeARWq1 (ORCPT ); Thu, 18 Jan 2018 17:46:27 -0500 Received: from ipmail07.adl2.internode.on.net ([150.101.137.131]:38324 "EHLO ipmail07.adl2.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753881AbeARWq0 (ORCPT ); Thu, 18 Jan 2018 17:46:26 -0500 Date: Fri, 19 Jan 2018 09:46:14 +1100 From: Dave Chinner To: Christoph Hellwig Cc: viro@zeniv.linux.org.uk, Avi Kivity , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: aio fsync revisited Message-ID: <20180118224614.GI16421@dastard> References: <20180117194747.1631-1-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180117194747.1631-1-hch@lst.de> User-Agent: Mutt/1.5.21 (2010-09-15) 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: On Wed, Jan 17, 2018 at 08:47:46PM +0100, Christoph Hellwig wrote: > Hi all, > > this patch adds workqueue based fsync offload. Version of this > patch have been floating around for a couple years, but we now > have a user with seastar used by ScyllaDB (who sponsored this > work) that really wants this in addition to the aio poll support. > More details are in the patch itself. > > Because the iocb types have been defined sine day one (and probably > were supported by RHEL3) libaio already supports these calls as-is. > > As the patch is on top of of the aio.c changes in the aio poll > series I've also provided a git tree: > > git://git.infradead.org/users/hch/vfs.git aio-fsync > > Gitweb: > > http://git.infradead.org/users/hch/vfs.git/shortlog/refs/heads/aio-fsync After I get back from LCA (all next week) I'll update the fsmark aio patches I have and retest this. The code looks pretty similar to the last "generic aio fsync" patch I wrote, so I'm guessing that the results will be pretty similar, too. It would be good to finally get this implemented in the kernel... Cheers, Dave. -- Dave Chinner david@fromorbit.com