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[23.128.96.18]) by mx.google.com with ESMTP id gf6si5302300ejb.338.2020.05.22.13.28.40; Fri, 22 May 2020 13:29:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel-dk.20150623.gappssmtp.com header.s=20150623 header.b=BXbHdLw2; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731174AbgEVUYF (ORCPT + 99 others); Fri, 22 May 2020 16:24:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731042AbgEVUXW (ORCPT ); Fri, 22 May 2020 16:23:22 -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 3BBA0C05BD43 for ; Fri, 22 May 2020 13:23:21 -0700 (PDT) Received: by mail-pl1-x641.google.com with SMTP id q16so4832456plr.2 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=UMSEQYTjRgxH17LZZ1UWDIfdNqHFnsyvyn3PzzFLo4s2F258oi3g03xKufGZ+tQmBH JoIr7ZMrxV/IUq1GELE7MFP6eE56Nl8x9a2QcKSw8/0Kz7gMUgxTCLRVkHZw/p8dwJmk 80hlTiAZ+JGOUdzk+M/TlUX6aLaPa0lsMFmpYPKgnJlIeFRNYFcT3df9Fw4AdC6Ndm4x v8T1os3IoQM1vDLagMIBVkVCNJrf2lT+OTyPnA0wb1LdNw1liXRJHgLFWeldg96OTR9s OEukhlaZyfIKICcD5jC7S7mONwBPdNeUJqfSBQJxQ8dfcblp57ve94hD8FZiVz63zhxD zdhw== X-Gm-Message-State: AOAM5305AFZNIUCy8pxedjHVO8zEjIZ6LNLTQYGfjeo+nLzkis93r+BH vDWvkKAAw6v0KddiYin7ATqrEg== 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-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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