From patchwork Sat May 23 01:50:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Axboe X-Patchwork-Id: 11566521 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8993390 for ; Sat, 23 May 2020 01:51:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 71F722072C for ; Sat, 23 May 2020 01:51:59 +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="zbiGe0xN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387499AbgEWBvz (ORCPT ); Fri, 22 May 2020 21:51:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387453AbgEWBu7 (ORCPT ); Fri, 22 May 2020 21:50:59 -0400 Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6FD21C061A0E for ; Fri, 22 May 2020 18:50:59 -0700 (PDT) Received: by mail-pj1-x1044.google.com with SMTP id 5so5812722pjd.0 for ; Fri, 22 May 2020 18:50:59 -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=DT9kV8IQxC/D+uhFJsefv+iJT3TxYB4ReZ7s4ZFOil0=; b=zbiGe0xN/5Eo+H2CF5xCbc37d8G9FUD+KwT1btc4sCr0MmxKKhWlYkpMFKsBDe+auM 9Lo6glgxT0TpCX3WRGG2vn4VE4AX+1pfCRCyrummCo1lCgDdqbkeBEk6ijx9JZHEJeU6 jRmvQq6kJzvuOmFc9w5apNTgM3Y6aWuEs/rQtJ0OKa8yDTfg0sKs6pnYpShqn12A0A9y J6Wc16rnzBpz+0lD/w43ca6v1fqIWEl8Vw2+W7mJDgRZMzxLokmiLxhG9yZLWNMkjrKX Hj5+zMmQhwgf39Gi5fHYe6g3ZGmPsA6EMMkh/9rZ+BCgVtl95AzUU9gmqRnnCNoVHzwK 88yQ== 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=DT9kV8IQxC/D+uhFJsefv+iJT3TxYB4ReZ7s4ZFOil0=; b=J6gdSjOyFPfLaxTrw2ZmAzs5zPlpLssoXL1Y0Oc1qJ9R8JHJ4F/fSh+UymsL0jHBBZ 8wbEiIdCzdqkJwMqTL4Q2o+WgKalVMy9OO0iMGDK0p9KZjcSLSr8fNGy55Pc9FyNYArG 3CEeKwqDReeaApSCVxK8UrdPEV53/syXazAZ+pFfq3G8HwaoOvuRmg8whyJGgpVoy0+7 snF/t2g/ggRjB0l6OCbZlKvoelx1YicTl5HnESRDfToNEHmz9QhwC6jc6k9nGUChPbVN 8ATpITxn26TReb51FpjPaQ0pwlfT/PXRyKE6SjBv54IfgkEBYCNsSBUpN3rSYJWdILCL diTg== X-Gm-Message-State: AOAM531OYIhG7mq4O5lMNjm7CW80YsKPPGawK65Iv0JNsNwqRoyJ2I7/ V5x29/ZaGRmt8NMW5ATf9VmSvg== X-Google-Smtp-Source: ABdhPJwBmDXlE+x5QTHM8T9DaQOh7Fl5EgB2+dvXN52teuRxNlg4WmYuq4kTmwFYa3fjjpSWpHNLKQ== X-Received: by 2002:a17:90a:344c:: with SMTP id o70mr8104020pjb.23.1590198658974; Fri, 22 May 2020 18:50:58 -0700 (PDT) Received: from x1.lan ([2605:e000:100e:8c61:e0db:da55:b0a4:601]) by smtp.gmail.com with ESMTPSA id a71sm8255477pje.0.2020.05.22.18.50.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 May 2020 18:50:58 -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 01/11] block: read-ahead submission should imply no-wait as well Date: Fri, 22 May 2020 19:50:39 -0600 Message-Id: <20200523015049.14808-2-axboe@kernel.dk> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200523015049.14808-1-axboe@kernel.dk> References: <20200523015049.14808-1-axboe@kernel.dk> MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org As read-ahead is opportunistic, don't block for request allocation. Signed-off-by: Jens Axboe --- include/linux/blk_types.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index ccb895f911b1..c296463c15eb 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -374,7 +374,8 @@ enum req_flag_bits { #define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY) #define REQ_FUA (1ULL << __REQ_FUA) #define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH) -#define REQ_RAHEAD (1ULL << __REQ_RAHEAD) +#define REQ_RAHEAD \ + ((1ULL << __REQ_RAHEAD) | (1ULL << __REQ_NOWAIT)) #define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND) #define REQ_NOWAIT (1ULL << __REQ_NOWAIT) #define REQ_CGROUP_PUNT (1ULL << __REQ_CGROUP_PUNT)