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 B519CC433DF for ; Fri, 9 Oct 2020 14:34:04 +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 694FA2226B for ; Fri, 9 Oct 2020 14:34:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="I7bCC5JX"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="QHCGxvwZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 694FA2226B 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=m9sElXGfeVYl/oWDRO5Pj/8lzrPnMYznSZa7Zo7hfhc=; b=I7bCC5JXF6OBhfIztmzGYNFIK 6GEBETdei7XkwnSYShDEPHO5qjUyDuT1Ks9AX7ZHvcfKkshooaNKjJVpEr2u4Gqzy9rN3izaTAZCc k1Ij57CWgWhHbcXv7/OyWdFCMhGu7uNy6HfSZfjxefGUUHMPvq4u3+zmsb4AiiaiINTazRzuupX/j 0itid9pA8lw9meCUfIOXTlLsWa6LiSri48U91hBY9rSrnJkthcoSPuXbG++7DaI6n6g14xep2LKbZ 24VmY1K9lBVx8oo2++82G0UbP+MC9xnzwboYKjxKHK7fUL1fuHzkBqfm0oMP0cDMOzWyD/DbDJzuR shSgLPCPQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtSA-0004Kw-UB; Fri, 09 Oct 2020 14:33:03 +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-0003N7-KD; 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=qnANyeE8BGUfs9EI0mAgvyYgGmWNNC+tzF64JAGclAM=; b=QHCGxvwZzOX1kKFzij5mlSA/gw QTEkEHUkZeBUJ3wxqkKLJnb+bsoPZd4hqA4z6Fwej0ZQFO//xttCyk0G8YeGWpkWOR3Ke/QHezikU UDp2rHaCqzXEJaLyZsMKYIcB76E++KCon/B6LkQ7B4lkZm/QIUpuSjEl7+/dqENZ1ckEIQZVsUjZ7 ks/g/Az4xPcjq9NueOILPQhW/QPHNUAt/TaqD3NrozoRyFrwY7lri5+g0QXxkQNUY8pwlwF5g61iK i1MIhRgWYaawB21c84FTADz1O9wLc66fLBSz21rg1EdS0WrlcP85GM4DMvNPwUHqexLNS+zDBNn2N 9ny/3G4w==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQtQM-0005vs-7D; Fri, 09 Oct 2020 14:31:10 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Subject: [PATCH v2 12/16] ubifs: Tell the VFS that readpage was synchronous Date: Fri, 9 Oct 2020 15:31:00 +0100 Message-Id: <20201009143104.22673-13-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 ubifs 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/ubifs/file.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index b77d1637bbbc..82633509c45e 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -772,7 +772,6 @@ static int ubifs_do_bulk_read(struct ubifs_info *c, struct bu_info *bu, if (err) goto out_warn; - unlock_page(page1); ret = 1; isize = i_size_read(inode); @@ -892,11 +891,16 @@ static int ubifs_bulk_read(struct page *page) static int ubifs_readpage(struct file *file, struct page *page) { - if (ubifs_bulk_read(page)) - return 0; - do_readpage(page); - unlock_page(page); - return 0; + int err; + + err = ubifs_bulk_read(page); + if (err == 0) + err = do_readpage(page); + if (err < 0) { + unlock_page(page); + return err; + } + return AOP_UPDATED_PAGE; } static int do_writepage(struct page *page, int len) -- 2.28.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/