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=-9.8 required=3.0 tests=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=unavailable 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 340ABC433DF for ; Fri, 22 May 2020 20:24:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 098C92078D for ; Fri, 22 May 2020 20:24:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="BXbHdLw2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731044AbgEVUXW (ORCPT ); Fri, 22 May 2020 16:23:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731035AbgEVUXV (ORCPT ); Fri, 22 May 2020 16:23:21 -0400 Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BB35C061A0E for ; Fri, 22 May 2020 13:23:21 -0700 (PDT) Received: by mail-pl1-x641.google.com with SMTP id a13so4827205pls.8 for ; Fri, 22 May 2020 13:23:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=TvoN8a3WZmoogVlnFEo2G3/jPQNtfJ5pQXb6VgaLeNI=; b=BXbHdLw2u7+4v2OrPmYOPKCximguO5jiRJZaHaFHSVsvSvWUEzYysWoLSxdtoQAhVk HQyzWIFFRo/mFUpenrzA6F5+44ecTT/9T8gl76XCfW+c2eXcPrv0LOIa2RbwWHAjv/HG LlwUH90hb2MejF0kbDvRktH/1MKI00SlTe1zoChJciTQecxjsyBVAaG5NbzlfHNdSLJo YxLoC+8l2OyrR2oOB0j03phI7j7zHKNXpqoNl19DH0baMd93TstNiHmfuTzQF3eeeuAS 2STt80Zor0RzeZK9zZbUp4rN1b+ryCJn37SAdistDxGmOl4mfgIIJQWGyWWE7PTGyUWw nDKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=TvoN8a3WZmoogVlnFEo2G3/jPQNtfJ5pQXb6VgaLeNI=; b=FRP8aOkhDXCEwNOtheAhAjm94mYo8sFpr7HhRd+4t6o2XFonWFQBQtfyfE+7rLZ2cL wzwXzJ7aqt1obwCmyVGh4CL04xDMnuM8Rc7obsYhUCi66yqJVLdSTrZeuE/7tecOe0dt RnbDbOJIcqJt74bII5bc5kw3vwPvHCJH2NOCj5B9SevwsJMu5AAw/0rqN2VYJ4qp1X91 EYHatpcuOL4AJV+IQUU1iXXM7avNd1ioW8TrQBRA9Fp0YbEWoNsWJwLeywOJEkMMkHqy lo3TuTtNCE25+3bdIiJWD/zNNFsMesTiIxfOCL6HNsUWPdoMgf6DhDjnAraCIEjqf8Sa 53tw== X-Gm-Message-State: AOAM530sKUaEN3SBu6VrWwnMwQ6ITurnvoKbTVbMRPify1jWEbS+8FNN yzU5qrQpRkgp/bEfAYrHeX/E7O0J/XA= X-Google-Smtp-Source: ABdhPJyVyvEl6dSL6IOBsJmpnycz4H0kN8LpN+dJacQOGflvQ6nocjSVsWNNdSmRA8eHxZtEk7xEXQ== X-Received: by 2002:a17:90a:6881:: with SMTP id a1mr6499268pjd.153.1590179000778; Fri, 22 May 2020 13:23:20 -0700 (PDT) Received: from x1.lan ([2605:e000:100e:8c61:e0db:da55:b0a4:601]) by smtp.gmail.com with ESMTPSA id e19sm7295561pfn.17.2020.05.22.13.23.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 May 2020 13:23:20 -0700 (PDT) From: Jens Axboe To: io-uring@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jens Axboe Subject: [PATCH 02/11] mm: allow read-ahead with IOCB_NOWAIT set Date: Fri, 22 May 2020 14:23:02 -0600 Message-Id: <20200522202311.10959-3-axboe@kernel.dk> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200522202311.10959-1-axboe@kernel.dk> References: <20200522202311.10959-1-axboe@kernel.dk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The read-ahead shouldn't block, so allow it to be done even if IOCB_NOWAIT is set in the kiocb. Signed-off-by: Jens Axboe --- mm/filemap.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index 23a051a7ef0f..80747f1377d5 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2031,8 +2031,6 @@ static ssize_t generic_file_buffered_read(struct kiocb *iocb, page = find_get_page(mapping, index); if (!page) { - if (iocb->ki_flags & IOCB_NOWAIT) - goto would_block; page_cache_sync_readahead(mapping, ra, filp, index, last_index - index); -- 2.26.2