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,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 3C91AC4363D for ; Fri, 16 Oct 2020 16:04:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DBE2A216C4 for ; Fri, 16 Oct 2020 16:04:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="K7eCJ07R" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2410579AbgJPQE5 (ORCPT ); Fri, 16 Oct 2020 12:04:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2410568AbgJPQE4 (ORCPT ); Fri, 16 Oct 2020 12:04:56 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8575C0613DB for ; Fri, 16 Oct 2020 09:04:51 -0700 (PDT) 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=GW1YniPzUpda1PIsi2+AeQMOnKxd544xKFcJ+bcv5fM=; b=K7eCJ07RGw8arkwgdNQlSnFq2d h58I6X6KM/kN3gsXkDv8ux5v0KW2AdOMDbxEYqWMRa2akXqD1y7uxOqSSE3mbOQiQP5XubA1bTI9d 5QhNLeLpvS5ZSpLhxDD6q7m+bunICgdybQ5RkJLfRivaOkc7VsVkKt579lLY/VLYfLufn1SXfuODI MpDLjJQF6BqojsFDzeUzHOKrttAlZTfqm4uY5ds92AkkILMEcF0HDAE95ByBWgPnyVSek8g10QYfu BRkDeEIxHLIOFAT/tp5BZU/4KHfxkHkOOn9rCVq0R8OwtkBguJR8VN07wr++Djct1xBbqq68FQVQZ Ru/VSt/A==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kTSDo-0004tr-WB; Fri, 16 Oct 2020 16:04:49 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, Richard Weinberger Subject: [PATCH v3 14/18] hostfs: Tell the VFS that readpage was synchronous Date: Fri, 16 Oct 2020 17:04:39 +0100 Message-Id: <20201016160443.18685-15-willy@infradead.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20201016160443.18685-1-willy@infradead.org> References: <20201016160443.18685-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The hostfs 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/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; } -- 2.28.0