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=-9.6 required=3.0 tests=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 4AC42C433E0 for ; Fri, 22 May 2020 20:23:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id F3BFB207D8 for ; Fri, 22 May 2020 20:23:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="BXbHdLw2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F3BFB207D8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B0BB48000A; Fri, 22 May 2020 16:23:22 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AE44D80007; Fri, 22 May 2020 16:23:22 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9A9EE8000A; Fri, 22 May 2020 16:23:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0069.hostedemail.com [216.40.44.69]) by kanga.kvack.org (Postfix) with ESMTP id 82EFB80007 for ; Fri, 22 May 2020 16:23:22 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 49F12824556B for ; Fri, 22 May 2020 20:23:22 +0000 (UTC) X-FDA: 76845479844.11.key12_48a70851f2b X-HE-Tag: key12_48a70851f2b X-Filterd-Recvd-Size: 3572 Received: from mail-pj1-f66.google.com (mail-pj1-f66.google.com [209.85.216.66]) by imf01.hostedemail.com (Postfix) with ESMTP for ; Fri, 22 May 2020 20:23:21 +0000 (UTC) Received: by mail-pj1-f66.google.com with SMTP id 5so5459939pjd.0 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=VwcRpcCclVZbfVtOW4/LVVY2BMRp7387JeHqM4gIvZngConQSXh4XXLy4t1s0QHM8V u6mrWuFv6eWm68uodByUn+usj2IQdxTpNsX6X6tm6LhPx3ZlkOAVObzoR3Fh9m+Ava39 606G3QMNjbx+qaYFzQNiNtlGxN8QVcjxql+6m/gksFGrP91WWAek7jq+9MlD6OWMGyhh hCnw/SQBqtex2uDCHJ1RP634H2UFdYpJuvxnpyDm1Fd8R4BJQ8ra35LkWRx7bt4WiDtZ BmKtas1q7cyihskOQwb0hwuubSLWwcN2hfeXj/k8F7Xy1BmDBCmCb4blVxabEeYhK0Sk cXxA== X-Gm-Message-State: AOAM531y6nPIizf5EQshcO/mtDY+SXRj1/TRcePEWGtiZ5oFcnfw7PQM 82iUI7rFeA9NKBwXcENFLlnvMA== 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: 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 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 ki= ocb *iocb, =20 page =3D 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); --=20 2.26.2