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,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 DA4FAC433E1 for ; Tue, 26 May 2020 19:51:32 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9EE7B2088E for ; Tue, 26 May 2020 19:51:32 +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="EEzkohF3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9EE7B2088E 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 D07D8800B8; Tue, 26 May 2020 15:51:30 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C924E80010; Tue, 26 May 2020 15:51:30 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AE855800B8; Tue, 26 May 2020 15:51:30 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0158.hostedemail.com [216.40.44.158]) by kanga.kvack.org (Postfix) with ESMTP id 92E8180010 for ; Tue, 26 May 2020 15:51:30 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 50B92180AD81F for ; Tue, 26 May 2020 19:51:30 +0000 (UTC) X-FDA: 76859914740.11.spark81_6462748ce5328 X-HE-Tag: spark81_6462748ce5328 X-Filterd-Recvd-Size: 3607 Received: from mail-pl1-f195.google.com (mail-pl1-f195.google.com [209.85.214.195]) by imf26.hostedemail.com (Postfix) with ESMTP for ; Tue, 26 May 2020 19:51:29 +0000 (UTC) Received: by mail-pl1-f195.google.com with SMTP id y11so829129plt.12 for ; Tue, 26 May 2020 12:51:29 -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=EEzkohF3SUyIeVc607D1E79iz7OYkD/uy0I4GSnchfP+t2/8/jBtqFox0ipMXW7gmS ofFyzP3GFe0yYbASDLZaxrNNYrAZioS6+qyZzi3BNWoxV7sx7HqmGaPk0jbEdJvgnKeB LS9UwziDdS5h+5MFwXcOepQDNcjfOPRuuNqKL+56cp6TcQw3V1rzfELuJiMDiQxFYBUv vodgm8HTVNcfKt1cQ9mCuLi6iS5R/Q8g3QwtsGY6bO7P1eejUGE4Bg2SUpBDQd14zfM1 K3pATJ3oH3ooIkQY7kB2SG6VI0b8+IfGy1HVnsFn7Li+LHrtGMCLBa+H3phkx45yiFvC NeTQ== 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=dXHkt80wzzeloS8+v19HP+hQcDKAYUpnMS20OK9ccmESAslukcZwOXA6JIQ54zWESG wt5raXpsHWhpEiEclVdZLY5WzvWu0nHP3Sgu3oN7T0IqFyouu2sfK7IZOnrGq27nC+lQ Inl3NRh0Wup4ZgMNB2ROG8c8hXguriSfl/oWOYdfK227tW0PRoSmCgKdmFLlUWZBfDlM NXnrePzdZUABl4WrJtdmL6il1eAKeNBPJCUX+yi4148icfbPA0UOdJdkjoi1XEljnfwg uaa0TFrrfCMRI6M91oSLU2MzypIE9uM+h5xb30apt/46qOAxS0Xmty9TtH0ximn6U06Q Nu9w== X-Gm-Message-State: AOAM533ePiA8c6nAeUMtt7UvZW3Fp0GdqedSH2EnRmDhFqI5OjO+h/yI +DW27/RLthYNPHojJHCTE1UOLQ== X-Google-Smtp-Source: ABdhPJzlKhcLATAMmx3CWvH61LMiVxHHoRlGG4C3q4JS7w38d9LDkh0jn/mRK3Wz+nSKoQ/Hn6XBsQ== X-Received: by 2002:a17:90a:1b25:: with SMTP id q34mr920742pjq.12.1590522688801; Tue, 26 May 2020 12:51:28 -0700 (PDT) Received: from x1.lan ([2605:e000:100e:8c61:94bb:59d2:caf6:70e1]) by smtp.gmail.com with ESMTPSA id c184sm313943pfc.57.2020.05.26.12.51.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 May 2020 12:51:28 -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, akpm@linux-foundation.org, Jens Axboe Subject: [PATCH 02/12] mm: allow read-ahead with IOCB_NOWAIT set Date: Tue, 26 May 2020 13:51:13 -0600 Message-Id: <20200526195123.29053-3-axboe@kernel.dk> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200526195123.29053-1-axboe@kernel.dk> References: <20200526195123.29053-1-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