From patchwork Wed Jul 26 10:26:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Xu X-Patchwork-Id: 13327805 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A944BC41513 for ; Wed, 26 Jul 2023 10:26:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233873AbjGZK0z (ORCPT ); Wed, 26 Jul 2023 06:26:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53960 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233855AbjGZK0k (ORCPT ); Wed, 26 Jul 2023 06:26:40 -0400 Received: from out-5.mta1.migadu.com (out-5.mta1.migadu.com [95.215.58.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA45D269A for ; Wed, 26 Jul 2023 03:26:36 -0700 (PDT) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1690367194; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Lwy1bya8EhY/7tZ1lMXE+4zXJK9aZUCgnxudXlZKm68=; b=ux551U6nhVvd09Fj1FVNymeGKcLT6zQsEBqhk225f+PUyMSHGeN5cY/do/fviplQGSDyEa wDLTA/5zkhT7BGUXE02iGDI3c9FhGSpI38RqZnn4nJtV4JEUJxp+DqWLdBDnHBPMLV6JSm NwF24t3Iddnn29aDeFdB1045RF83B/k= From: Hao Xu To: io-uring@vger.kernel.org, Jens Axboe Cc: Dominique Martinet , Pavel Begunkov , Christian Brauner , Alexander Viro , Stefan Roesch , Clay Harris , Dave Chinner , "Darrick J . Wong" , linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, Wanpeng Li Subject: [PATCH 4/7] add llseek_nowait() for struct file_operations Date: Wed, 26 Jul 2023 18:26:00 +0800 Message-Id: <20230726102603.155522-5-hao.xu@linux.dev> In-Reply-To: <20230726102603.155522-1-hao.xu@linux.dev> References: <20230726102603.155522-1-hao.xu@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org From: Hao Xu Add a new function member llseek_nowait() in struct file_operations for nowait llseek. It act just like llseek() but has an extra boolean parameter called nowait to indicate if it's a nowait try, avoid IO and locks if so. Signed-off-by: Hao Xu --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/fs.h b/include/linux/fs.h index f3e315e8efdd..d37290da2d7e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1823,6 +1823,7 @@ struct file_operations { int (*uring_cmd)(struct io_uring_cmd *ioucmd, unsigned int issue_flags); int (*uring_cmd_iopoll)(struct io_uring_cmd *, struct io_comp_batch *, unsigned int poll_flags); + loff_t (*llseek_nowait)(struct file *, loff_t, int, bool); } __randomize_layout; struct inode_operations {