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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 660A2C2BBD1 for ; Thu, 17 Sep 2020 15:11:01 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C7F4D2075B for ; Thu, 17 Sep 2020 15:11:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="rBA3BEed" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C7F4D2075B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id EEC116B0037; Thu, 17 Sep 2020 11:10:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E924F8E0003; Thu, 17 Sep 2020 11:10:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CCAAD8E0001; Thu, 17 Sep 2020 11:10:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0098.hostedemail.com [216.40.44.98]) by kanga.kvack.org (Postfix) with ESMTP id AE4CC8E0001 for ; Thu, 17 Sep 2020 11:10:58 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 650DE1825D78C for ; Thu, 17 Sep 2020 15:10:58 +0000 (UTC) X-FDA: 77272890996.30.hot99_5102db427123 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin30.hostedemail.com (Postfix) with ESMTP id 0E40E180B3C8B for ; Thu, 17 Sep 2020 15:10:58 +0000 (UTC) X-HE-Tag: hot99_5102db427123 X-Filterd-Recvd-Size: 2514 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf25.hostedemail.com (Postfix) with ESMTP for ; Thu, 17 Sep 2020 15:10:57 +0000 (UTC) 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=5bMB1AIyFb3Uo5KQX9JPM+gHHI0JgEg44Zm96s2wWSw=; b=rBA3BEedGxTEi6jjWgdFgG9hWD rAtzju3sIMBKwrAld+mQATn7QaELiGbXVXmda93yYxh+yGS2+0GwA617L8+TIuo3Jk8ylfnIXk1LL H0TvouglbVTFDzhXbSrLLJR8GAx9F0XOhb7d7HXvbImpXSlYZ+WbfMfJ7KLJgKaDDRuyCUS26Oz12 KxWnZX+HUeYpcjcOv6pJRJj8WdPq//IKqqm0bFb6zeal4AaAU3BZ/IPEj68NH4x1qS98+Qp9MtRPu cADf27TdVH4fZZTEQTThue/nS5onCBKmS8Q73H+9r1P8RaGh4WeCO+yzsvRmbQR5olV5anJvC0EkL rdhWhOtg==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kIvYk-0001QE-67; Thu, 17 Sep 2020 15:10:54 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, v9fs-developer@lists.sourceforge.net, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org, ecryptfs@vger.kernel.org, linux-um@lists.infradead.org, linux-mtd@lists.infradead.org, Richard Weinberger Subject: [PATCH 09/13] hostfs: Tell the VFS that readpage was synchronous Date: Thu, 17 Sep 2020 16:10:46 +0100 Message-Id: <20200917151050.5363-10-willy@infradead.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200917151050.5363-1-willy@infradead.org> References: <20200917151050.5363-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 0E40E180B3C8B X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The hostfs readpage implementation was already synchronous, so use AOP_UPDATED_PAGE to avoid cycling the page lock. Signed-off-by: Matthew Wilcox (Oracle) --- fs/hostfs/hostfs_kern.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index c070c0d8e3e9..c49221c09c4b 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -455,6 +455,8 @@ static int hostfs_readpage(struct file *file, struct = page *page) out: flush_dcache_page(page); kunmap(page); + if (!ret) + return AOP_UPDATED_PAGE; unlock_page(page); return ret; } --=20 2.28.0