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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 6E9E2C433E1 for ; Sun, 24 May 2020 19:22:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E76020787 for ; Sun, 24 May 2020 19:22:43 +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="TglGLCKY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388308AbgEXTWm (ORCPT ); Sun, 24 May 2020 15:22:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388249AbgEXTW2 (ORCPT ); Sun, 24 May 2020 15:22:28 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DCF1C08C5C2 for ; Sun, 24 May 2020 12:22:27 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id s10so7788707pgm.0 for ; Sun, 24 May 2020 12:22:27 -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=egusxH2Kf4IsegITvpm+Q3F8VxKliDk7k1e8lkissGM=; b=TglGLCKYUK3IUheNw2tbkabE4Tsvn6fX7wkDCP1B329i3fyJ7ym0/4jC6PlxFEJkCh xq1XNX2hwngAJ5RcbIVexVcP9jjvdaD9osyY+kMe+yMGUekQEI9NIpkmMfLWwshr5yaT 9x1b/h2VkjbTsRSyVybp3IKTaneYp2AbkvguvjSaI6bwG+QNsK/bdCW5gf+XuRt4xgqE Ve96sQETJ61P1rmIYCDy5zh+xyCExYatJgRwEB3WAFACCj4ZKPLryT+2Z3vNLi5FK4vI pcc4/jxFI1Biav3NYID6de289fcInGHFS4DS31EtXvYZlBGY5Kh1XFpLtfn3lKFAilan CVUQ== 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=egusxH2Kf4IsegITvpm+Q3F8VxKliDk7k1e8lkissGM=; b=rPMTf0KWcV+6ytPd0MMh0AIVAC7ksbxEtCjN0aBH/EmIgX5tcHvdEaYAh7DUl6z1el 5KmMD4SvJapMQGagOfcQR54RmA/U1kP8y8oamDy1rh3zw3ogPu2DkH7IflmbqBlfey6f 2VdQX8VPX5f4k6Ka1k5lD36awMM6JdEuAYOy46jrMVC2DrggJvinDV7ZvhbwdbgVNlG2 42y67ztLy2JziddBeUWXT9qkYQ2qxfKajnTvyvHt6ReNZnRmxPgZ/FmygYrZx9Cz7YWF s56+pFqPenRt/5zzvJWajKoxWSh/1YtF7ovT6hCfJ80WyTXxbtR5URJMlRU/G07k9JFB wDXQ== X-Gm-Message-State: AOAM532JAQYarl+BZdT845qyXEeXUsKyN6kNuRHR6fTYj+BWcF1KjXWl V2reap2sZ/PVkCQPjcjH00uStg== X-Google-Smtp-Source: ABdhPJxKr0QyshEARDFf894CnVwX/DlbGPjUKUr7q571X3XzSjjUdNUUq4yA3N0OBw7dm2okvEdSNw== X-Received: by 2002:a63:1d4:: with SMTP id 203mr22607763pgb.74.1590348147189; Sun, 24 May 2020 12:22:27 -0700 (PDT) Received: from x1.lan ([2605:e000:100e:8c61:c871:e701:52fa:2107]) by smtp.gmail.com with ESMTPSA id t21sm10312426pgu.39.2020.05.24.12.22.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 24 May 2020 12:22:26 -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 11/12] mm: add kiocb_wait_page_queue_init() helper Date: Sun, 24 May 2020 13:22:05 -0600 Message-Id: <20200524192206.4093-12-axboe@kernel.dk> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200524192206.4093-1-axboe@kernel.dk> References: <20200524192206.4093-1-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 Checks if the file supports it, and initializes the values that we need. Caller passes in 'data' pointer, if any, and the callback function to be used. Signed-off-by: Jens Axboe --- include/linux/pagemap.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index d3e63c9c61ae..8b65420410ee 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -493,6 +493,27 @@ static inline int wake_page_match(struct wait_page_queue *wait_page, return 1; } +static inline int kiocb_wait_page_queue_init(struct kiocb *kiocb, + struct wait_page_queue *wait, + wait_queue_func_t func, + void *data) +{ + /* Can't support async wakeup with polled IO */ + if (kiocb->ki_flags & IOCB_HIPRI) + return -EINVAL; + if (kiocb->ki_filp->f_mode & FMODE_BUF_RASYNC) { + wait->wait.func = func; + wait->wait.private = data; + wait->wait.flags = 0; + INIT_LIST_HEAD(&wait->wait.entry); + kiocb->ki_flags |= IOCB_WAITQ; + kiocb->ki_waitq = wait; + return 0; + } + + return -EOPNOTSUPP; +} + extern void __lock_page(struct page *page); extern int __lock_page_killable(struct page *page); extern int __lock_page_async(struct page *page, struct wait_page_queue *wait); -- 2.26.2