From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5AA5BC433DF for ; Fri, 9 Oct 2020 14:33:20 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 07B052226B for ; Fri, 9 Oct 2020 14:33:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="g5XiCjMF"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="VsE23OLO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 07B052226B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Vo4bd1Kjv3Ozp4WX3v1T1uXFJjyR3kDbruk6dt3Dcc0=; b=g5XiCjMFxay2SfkVzvYI9v0sT VNss9HdA0TgV5c+AXqCEKiVOz4waKVGv37sPyBq9OLA+Dlw59B5GU6Kn3izp/e1BQk8/1JHLC3mVf 6RzL4GxQB7DKYdCjePBo1N9jvVG+XFKmXg6/Cy4A8wf+6lngRT1BxA5gkWptFNQGpzPWSFflnk7Z8 k8whZUlqboy0tzEso8IPTUZEJnqChXaV342RbkRaaMgWTiEzqEzQ0GMAAy0l7EOWJFXXf7P7rd10v /Ze6BIc3XEfV1qKs094oAhh7cFQc3dpepM1lT8B8CDX9CHlu8EC3Hxwe4xOVc/3g5bEdawRw3oy0T xc7CyWgoQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtRr-0004BO-Gs; Fri, 09 Oct 2020 14:32:43 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQN-0003Mi-6p; Fri, 09 Oct 2020 14:31:11 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=RIb1gQ+A64FbhPeJkfhHPdkd0Jjt6Z+sspMIve+fcDU=; b=VsE23OLOrUsnE7PhGHwfx4AvQD ZxkA8063qfbOb72uym0CvuEdjOdRn7oO/of7SRBBhcxjg9XTVL1ic5NG9xyRTX+fd2YtHU6noe+tR uEp06xjPiOqssHfOpiCZbZjqG05aMT4oOo9biqN01offaQ9iApy0o0e4MMkooCZAHQAeyjeBIDN8e KJorn95GK3/JkF8UaucM0gBtV/Vb6J3DVeBdt7Q6Dy7Pz7UU0qxP6J4lpYi/+bz+kDQ9hjZSAe76U jlZ6/O0bb9U/qtqCLSWlYuFcsp/+4PYyUSBphJDs2Y1Tzrf2WkgaY0Ow7NhEPSzbvdY53XI8klRju ymkLE0qQ==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQL-0005vk-SX; Fri, 09 Oct 2020 14:31:09 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Subject: [PATCH v2 11/16] jffs2: Tell the VFS that readpage was synchronous Date: Fri, 9 Oct 2020 15:30:59 +0100 Message-Id: <20201009143104.22673-12-willy@infradead.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20201009143104.22673-1-willy@infradead.org> References: <20201009143104.22673-1-willy@infradead.org> MIME-Version: 1.0 X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-cifs@vger.kernel.org, Richard Weinberger , ecryptfs@vger.kernel.org, linux-um@lists.infradead.org, linux-kernel@vger.kernel.org, "Matthew Wilcox \(Oracle\)" , linux-xfs@vger.kernel.org, linux-mm@kvack.org, linux-mtd@lists.infradead.org, v9fs-developer@lists.sourceforge.net, ceph-devel@vger.kernel.org, linux-afs@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org The jffs2 readpage implementation was already synchronous, so use AOP_UPDATED_PAGE to avoid cycling the page lock. Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Richard Weinberger --- fs/jffs2/file.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index f8fb89b10227..959a74027041 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -116,15 +116,17 @@ int jffs2_do_readpage_unlock(void *data, struct page *pg) return ret; } - static int jffs2_readpage (struct file *filp, struct page *pg) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(pg->mapping->host); int ret; mutex_lock(&f->sem); - ret = jffs2_do_readpage_unlock(pg->mapping->host, pg); + ret = jffs2_do_readpage_nolock(pg->mapping->host, pg); mutex_unlock(&f->sem); + if (!ret) + return AOP_UPDATED_PAGE; + unlock_page(pg); return ret; } -- 2.28.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/