From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-539844-1523804585-2-5804804684048967800 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, MAILING_LIST_MULTI -1, RCVD_IN_DNSWL_HI -5, LANGUAGES unknown, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='de', MailFrom='org' X-Spam-charsets: 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=fm2; t= 1523804585; b=D2NuWfTHJiHzaWhXEru3pe14cO/LSr+FSww/jYz69knwOdumHI 4c55bVAOKtwf0SHd3TMsSkQv8+7M6PzknM/aOLGKWtp8XG8ob0ud3CCS1tVhWnpI jws/HqI0MMV5ek2soKAZP3Hly06jEmS/qHmyPROoYy15jeHHEGVLYrZNRIv6E0kE cytLwNreHBMRuj4P8Gkl6p3IzFa1zie05lrFCzrFBvOqP+e6jFl2TqUVVpcwobtF HWZy36VBHQzRn9vw0XfPFQqo+5thgj5BCUTodHaw6Bdho3PNpsROrPk1NbPnkdNf 4r/bdXP+vdsR28qXZKZxhdqBfEZo2YoBUbkA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:sender:list-id; s=fm2; t=1523804585; bh= VYduZ9WTa8HKMfSngBmZewaoixJ2zwHImPsKQShoR3g=; b=lGfcYig88iHHSC58 gFwV+k3MWnDDRPWHlzikwOaRiU4qJynumfHHElOcPiDcNrFPI0hFw44txI9rbPuU xREgwYaAmApzu93UB9otOe2Xe7IpQAUaYVtXx63drfXVQdcMjddbIOK4O5mASh02 bfzePFm56lIf1xKwJHp+cP/kWVf+i7J+UO9IPHyLdVNPImXhBF01CcBndrbVnaVX n4vXkAhzvqfU7HhgN5f9Nyq7+gcDWdESgPTk8CSyfb37DgPOCVdxV1JF5NFxhaav cFW4Ub/w4MwrYKUJM8Ujxb08JKaOmAGQKbYEEmkFNHNCd5C4Rgkm30XYPI1/BCoB 1HoGQw== ARC-Authentication-Results: i=1; mx3.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered, 2048-bit rsa key sha256) header.d=infradead.org header.i=@infradead.org header.b=dHRPkXF2 x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=bombadil.20170209; dmarc=none (p=none,has-list-id=yes,d=none) header.from=lst.de; 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-cm=none score=0; 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=lst.de header.result=pass header_is_org_domain=yes; x-vs=clean score=0 state=0 Authentication-Results: mx3.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered, 2048-bit rsa key sha256) header.d=infradead.org header.i=@infradead.org header.b=dHRPkXF2 x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=bombadil.20170209; dmarc=none (p=none,has-list-id=yes,d=none) header.from=lst.de; 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-cm=none score=0; 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=lst.de header.result=pass header_is_org_domain=yes; x-vs=clean score=0 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfJ6Bx5fVZoMMDoZCChlLgBsUBOciFpSd5vO63wTY7AqM4dHtfuUq8/45+9iyAHz6ly8J4nE/RJ9+/ZS5ewyFNOG5r6c1sMdC+iRgBq58N9VuPN0NCU5J SLqR9tEanC+bdB4DLkL68Kwk+WtF3HpB6GgDQL65ZQ3fdObsy9fp+ZkSZoAPsQ2TQ/ryR2yqE5s8iPIpc2IQxGJdWN3IsvxJJyQ2qKVUwOy8aHtSRUQCNk2A X-CM-Analysis: v=2.3 cv=Tq3Iegfh c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=Kd1tUaAdevIA:10 a=ag1SF4gXAAAA:8 a=yPCof4ZbAAAA:8 a=VwQbUJbxAAAA:8 a=WnEx2ZbQ94QqvHYnlNwA:9 a=x8gzFH9gYPwA:10 a=Yupwre4RP9_Eg_Bd0iYG:22 a=AjGcO6oz07-iQ99wixmX:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752918AbeDOPBk (ORCPT ); Sun, 15 Apr 2018 11:01:40 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:34642 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753006AbeDOPBh (ORCPT ); Sun, 15 Apr 2018 11:01:37 -0400 From: Christoph Hellwig To: viro@zeniv.linux.org.uk Cc: Avi Kivity , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/7] aio: implement IOCB_CMD_FSYNC and IOCB_CMD_FDSYNC Date: Sun, 15 Apr 2018 17:01:07 +0200 Message-Id: <20180415150108.1341-7-hch@lst.de> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180415150108.1341-1-hch@lst.de> References: <20180415150108.1341-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html 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: Simple workqueue offload for now, but prepared for adding a real aio_fsync method if the need arises. Based on an earlier patch from Dave Chinner. Signed-off-by: Christoph Hellwig Reviewed-by: Greg Kroah-Hartman Reviewed-by: Darrick J. Wong --- fs/aio.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/fs/aio.c b/fs/aio.c index d4dd002712c8..de56496ba86c 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -156,6 +156,12 @@ struct kioctx { unsigned id; }; +struct fsync_iocb { + struct work_struct work; + struct file *file; + bool datasync; +}; + /* * We use ki_cancel == KIOCB_CANCELLED to indicate that a kiocb has been either * cancelled or completed (this makes a certain amount of sense because @@ -172,6 +178,7 @@ struct kioctx { struct aio_kiocb { union { struct kiocb rw; + struct fsync_iocb fsync; }; struct kioctx *ki_ctx; @@ -1571,6 +1578,36 @@ static ssize_t aio_write(struct kiocb *req, struct iocb *iocb, bool vectored, return ret; } +static void aio_fsync_work(struct work_struct *work) +{ + struct fsync_iocb *req = container_of(work, struct fsync_iocb, work); + int ret; + + ret = vfs_fsync(req->file, req->datasync); + fput(req->file); + aio_complete(container_of(req, struct aio_kiocb, fsync), ret, 0); +} + +static int aio_fsync(struct fsync_iocb *req, struct iocb *iocb, bool datasync) +{ + if (unlikely(iocb->aio_buf || iocb->aio_offset || iocb->aio_nbytes || + iocb->aio_rw_flags)) + return -EINVAL; + + req->file = fget(iocb->aio_fildes); + if (unlikely(!req->file)) + return -EBADF; + if (unlikely(!req->file->f_op->fsync)) { + fput(req->file); + return -EINVAL; + } + + req->datasync = datasync; + INIT_WORK(&req->work, aio_fsync_work); + schedule_work(&req->work); + return -EIOCBQUEUED; +} + static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb, struct iocb *iocb, bool compat) { @@ -1634,6 +1671,12 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb, case IOCB_CMD_PWRITEV: ret = aio_write(&req->rw, iocb, true, compat); break; + case IOCB_CMD_FSYNC: + ret = aio_fsync(&req->fsync, iocb, false); + break; + case IOCB_CMD_FDSYNC: + ret = aio_fsync(&req->fsync, iocb, true); + break; default: pr_debug("invalid aio operation %d\n", iocb->aio_lio_opcode); ret = -EINVAL; -- 2.17.0