From patchwork Fri Aug 25 13:54:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Xu X-Patchwork-Id: 1826124 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=YOpZi/I+; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=pz2+RJXn; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=patchwork.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RXM7B4VTGz1yZs for ; Sat, 26 Aug 2023 00:01:10 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6j5idQ4LSJ/STupdOA4JeM6y95AyozNnUETVGamrZeY=; b=YOpZi/I+9+Z6Zf 1dJZi/YBwlcTWsgHI/i2+9i6qw/NY3Hxj5ZN/Z3QX1OO1Yz+gjWxNiZoKdChG+Ib6hRIC53FQZa5o +ZyQmkbMrlIxsr59nRo20f3MY7rAsvegB+fEerkjHk2PS1YeUbozKtzo42bCW466hPkSZkkl3cBNQ +lQIpqoxsLLxI7RAsqkKOXiVOMZN3U/wM/2YKsuiDuYWpU+xUO1PRgGCOSu7DyVGgRPdqvqs6ZByx NVWhpUuHlz49Dtm1w3j7p/KA4YCgua6qxwHEeaAh+v/Zed0BYaCl5Tr4vchP+KIlv58F3psyrX0ZL iG8Fuj7C4WpqoQNLj5vw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qZXMi-005Wcw-06; Fri, 25 Aug 2023 14:00:44 +0000 Received: from out-243.mta1.migadu.com ([2001:41d0:203:375::f3]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qZXMe-005WbR-1h for linux-mtd@lists.infradead.org; Fri, 25 Aug 2023 14:00:42 +0000 X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1692972039; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=A8n142m+ckTq2ok9t7Tm2FnSZDGwRTGaDgQRQd0QVrs=; b=pz2+RJXny/FRc9X5ZHvo0v2sP0AhNIbG6GqEDC3f4IgSNhM3HBNVDwOESMUSOR4IEMUxcQ QeB+zNMG6saCP+3Ee3iNvTaLm94PmwVrh29h0zPxcQxdxo6uNrunXvw2MGBXff+gKAxGGD nCmOsY1G1aaOlGneScmRPtSGG9/rCYg= From: Hao Xu To: io-uring@vger.kernel.org, Jens Axboe Cc: Dominique Martinet , Pavel Begunkov , Christian Brauner , Alexander Viro , Stefan Roesch , Clay Harris , Dave Chinner , "Darrick J . Wong" , linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-cachefs@redhat.com, ecryptfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-unionfs@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-mm@kvack.org, linux-nilfs@vger.kernel.org, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, Wanpeng Li Subject: [PATCH 12/29] xfs: enforce GFP_NOIO implicitly during nowait time update Date: Fri, 25 Aug 2023 21:54:14 +0800 Message-Id: <20230825135431.1317785-13-hao.xu@linux.dev> In-Reply-To: <20230825135431.1317785-1-hao.xu@linux.dev> References: <20230825135431.1317785-1-hao.xu@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230825_070040_708205_1EC86366 X-CRM114-Status: GOOD ( 10.08 ) X-Spam-Score: -0.2 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From: Hao Xu Enforce GFP_NOIO logic implicitly by set pflags if we are in nowait time update process. Nowait semantics means no waiting for IO, therefore GFP_NOIO is needed. Signed-off-by: Hao Xu --- fs/xfs/xfs_iops.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) Content analysis details: (-0.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Hao Xu Enforce GFP_NOIO logic implicitly by set pflags if we are in nowait time update process. Nowait semantics means no waiting for IO, therefore GFP_NOIO is needed. Signed-off-by: Hao Xu --- fs/xfs/xfs_iops.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index bf1d4c31f009..5fa391083de9 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -1037,6 +1037,8 @@ xfs_vn_update_time( int log_flags = XFS_ILOG_TIMESTAMP; struct xfs_trans *tp; int error; + int old_pflags; + bool nowait = flags & S_NOWAIT; trace_xfs_update_time(ip); @@ -1049,13 +1051,18 @@ xfs_vn_update_time( log_flags |= XFS_ILOG_CORE; } + if (nowait) + old_pflags = memalloc_noio_save(); + error = xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp); if (error) - return error; + goto out; - if (flags & S_NOWAIT) { - if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) - return -EAGAIN; + if (nowait) { + if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) { + error = -EAGAIN; + goto out; + } } else { xfs_ilock(ip, XFS_ILOCK_EXCL); } @@ -1069,7 +1076,12 @@ xfs_vn_update_time( xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); xfs_trans_log_inode(tp, ip, log_flags); - return xfs_trans_commit(tp); + error = xfs_trans_commit(tp); + +out: + if (nowait) + memalloc_noio_restore(old_pflags); + return error; } STATIC int