From patchwork Wed May 18 23:36:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roesch X-Patchwork-Id: 12854337 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B233C433FE for ; Wed, 18 May 2022 23:38:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231605AbiERXiT (ORCPT ); Wed, 18 May 2022 19:38:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53370 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231519AbiERXhr (ORCPT ); Wed, 18 May 2022 19:37:47 -0400 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE56C6EC7F for ; Wed, 18 May 2022 16:37:37 -0700 (PDT) Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 24IN6Eum006271 for ; Wed, 18 May 2022 16:37:37 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=pHW2Lw/6eT2sNvHMajNKUy9KO3GFkUkQfmb833jlb7s=; b=Og5jnRFhOU9OK0iQ03fMShS/ysno+vhe5RPnwuyRGG2l+RPOqUd5q+SI+SQfFsl8Sbm7 +2dxtyDICSGgje7Qe5YaD18+etlLKYxkQ3e3VJSAHweQ1ZqD13Pw5ZbTLXtPD5+yomWY 0CSqLUbFFLxTdHiiyZ61olbnG4U8ymFTJrM= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3g3yq0g84b-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 18 May 2022 16:37:36 -0700 Received: from snc-exhub201.TheFacebook.com (2620:10d:c085:21d::7) by snc-exhub102.TheFacebook.com (2620:10d:c085:11d::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Wed, 18 May 2022 16:37:35 -0700 Received: from twshared24024.25.frc3.facebook.com (2620:10d:c085:208::f) by mail.thefacebook.com (2620:10d:c085:21d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Wed, 18 May 2022 16:37:34 -0700 Received: by devvm225.atn0.facebook.com (Postfix, from userid 425415) id D6771F3ED861; Wed, 18 May 2022 16:37:12 -0700 (PDT) From: Stefan Roesch To: , , , , CC: , , Subject: [RFC PATCH v3 08/18] xfs: Enable async write file modification handling. Date: Wed, 18 May 2022 16:36:59 -0700 Message-ID: <20220518233709.1937634-9-shr@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220518233709.1937634-1-shr@fb.com> References: <20220518233709.1937634-1-shr@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-GUID: 9fY5KwAq7wym8IEG9FbXqBwxsAyT4GHV X-Proofpoint-ORIG-GUID: 9fY5KwAq7wym8IEG9FbXqBwxsAyT4GHV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-18_06,2022-05-17_02,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org This modifies xfs file_modified() function to return -EAGAIN if the request either requires to remove privileges or needs to update the file modification time. This is required for async buffered writes, so the request gets handled in the io worker of io-uring. Signed-off-by: Stefan Roesch --- fs/inode.c | 25 ++++++++++++++++++++++++- fs/xfs/xfs_file.c | 2 +- include/linux/fs.h | 1 + 3 files changed, 26 insertions(+), 2 deletions(-) diff --git a/fs/inode.c b/fs/inode.c index 4bb7f583cc6b..3a5d0fa468ab 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -2137,6 +2137,27 @@ EXPORT_SYMBOL(file_update_time); * Return: 0 on success, negative errno on failure. */ int file_modified(struct file *file) +{ + return file_modified_async(file, 0); +} +EXPORT_SYMBOL(file_modified); + +/** + * file_modified_async - handle mandated vfs changes when modifying a file + * @file: file that was modified + * @flags: kiocb flags + * + * When file has been modified ensure that special + * file privileges are removed and time settings are updated. + * + * If IOCB_NOWAIT is set, special file privileges will not be removed and + * time settings will not be updated. It will return -EAGAIN. + * + * Context: Caller must hold the file's inode lock. + * + * Return: 0 on success, negative errno on failure. + */ +int file_modified_async(struct file *file, int flags) { int ret; struct dentry *dentry = file_dentry(file); @@ -2163,10 +2184,12 @@ int file_modified(struct file *file) ret = file_needs_update_time(inode, file, &now); if (ret <= 0) return ret; + if (flags & IOCB_NOWAIT) + return -EAGAIN; return __file_update_time(inode, file, &now, ret); } -EXPORT_SYMBOL(file_modified); +EXPORT_SYMBOL(file_modified_async); int inode_needs_sync(struct inode *inode) { diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 5bddb1e9e0b3..793918c83755 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -410,7 +410,7 @@ xfs_file_write_checks( spin_unlock(&ip->i_flags_lock); out: - return file_modified(file); + return file_modified_async(file, iocb->ki_flags); } static int diff --git a/include/linux/fs.h b/include/linux/fs.h index 3b479d02e210..9760283af7dc 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2382,6 +2382,7 @@ static inline void file_accessed(struct file *file) } extern int file_modified(struct file *file); +extern int file_modified_async(struct file *file, int flags); int sync_inode_metadata(struct inode *inode, int wait);