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=-9.5 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 580BEC433E1 for ; Sat, 23 May 2020 18:58:06 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 177D620735 for ; Sat, 23 May 2020 18:58:06 +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="dlRhMk44" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 177D620735 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 604148000A; Sat, 23 May 2020 14:58:04 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5662080007; Sat, 23 May 2020 14:58:04 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 408448000A; Sat, 23 May 2020 14:58:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0109.hostedemail.com [216.40.44.109]) by kanga.kvack.org (Postfix) with ESMTP id 2786980007 for ; Sat, 23 May 2020 14:58:04 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id D5DAD181AEF15 for ; Sat, 23 May 2020 18:58:03 +0000 (UTC) X-FDA: 76848893646.06.toe35_293d0dd90c44d X-HE-Tag: toe35_293d0dd90c44d X-Filterd-Recvd-Size: 3569 Received: from mail-pj1-f68.google.com (mail-pj1-f68.google.com [209.85.216.68]) by imf19.hostedemail.com (Postfix) with ESMTP for ; Sat, 23 May 2020 18:58:03 +0000 (UTC) Received: by mail-pj1-f68.google.com with SMTP id k7so6441212pjs.5 for ; Sat, 23 May 2020 11:58:03 -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=dlRhMk444r2/QEHuAZ++S1wyLJ84KnLxTEI64EuE4dN1pFxVgN8A9K0quOu7H4b4Kq sjwJUAUsTLCVCGcV3VQIysTW9HiVCJ7sH5euxBGtqJm15I6wEKH3mue/IQD6jbfOMSi7 Ee6mlXKJeIhli6gCf6YjVyTShL+/w3Hnk2eTqSuVF+zoDvF1MfrGYqyMRFeDjw07L0cs Mpg8k135t1sCC7y9Xv6B4U4O7cl9wdgoiTFK8GtgUeb7Kc22w5q0VzvT/2c8RzsYEwH1 Cn02kuIXs3ldFHF8OFsS7U3UbM4AjfKkDhyZ7OjtrO7ogq6UpJoIBqUQAGUK22qWlIRj o4Mw== 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=GoNtj7eb/R+EFRjlsB0EmB4YbtyFx/LJTpTRJmLpDb4ItQlc1Ih4juD3aaHrCJ4GK9 qGRTigiSUKaNZ0qqrB7My73KmzJK7IZG8D80Euw3ZDMb9lKNOCjsZ6sxbFQxB8RH3NQA 0YDdBNqk0PvPLSIkYbnaka93msKubKL685FZzLV6UtScwmqlP8M1xcl7niMfb/B9cYXG IoxS1tAkUBnBOWvUkuhLoGSQcj35WQ1KOfM91oxsMrxXBc2muau1awVxCfy42ACJCFie Q5+IwG7Dqa1kfDL8DsgbIVjfYTNAP2cH3lbSBZ6oN72AkE6w2b3m0Ilmq3fiZ2E21pft UQ4A== X-Gm-Message-State: AOAM530uJct/eC5YOhEPo/yrq5QIW5LRkXPgKHh0aNfYrPwAjjDwKb/J Wr5sAF9eDOawdaxPqZxPoSY+tg== X-Google-Smtp-Source: ABdhPJx4dsrrORWefyOaJaBwml4HUm2oobE0QtXJHHyZSr21A+y8BNmhuTv3ioELhwbbDTv2OiGRNA== X-Received: by 2002:a17:902:db82:: with SMTP id m2mr21720441pld.14.1590260282249; Sat, 23 May 2020 11:58:02 -0700 (PDT) Received: from x1.lan ([2605:e000:100e:8c61:c94:a67a:9209:cf5f]) by smtp.gmail.com with ESMTPSA id 25sm9297319pjk.50.2020.05.23.11.58.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 May 2020 11:58:01 -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 02/12] mm: allow read-ahead with IOCB_NOWAIT set Date: Sat, 23 May 2020 12:57:45 -0600 Message-Id: <20200523185755.8494-3-axboe@kernel.dk> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200523185755.8494-1-axboe@kernel.dk> References: <20200523185755.8494-1-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