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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B013C61DA4 for ; Mon, 6 Mar 2023 15:28:56 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 76DF16B0071; Mon, 6 Mar 2023 10:28:55 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 71DF66B0072; Mon, 6 Mar 2023 10:28:55 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 60DA66B0073; Mon, 6 Mar 2023 10:28:55 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 509166B0071 for ; Mon, 6 Mar 2023 10:28:55 -0500 (EST) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 7CFB912012A for ; Mon, 6 Mar 2023 15:28:54 +0000 (UTC) X-FDA: 80538856188.06.DCC3548 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf27.hostedemail.com (Postfix) with ESMTP id 3682C40020 for ; Mon, 6 Mar 2023 15:28:50 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf27.hostedemail.com: domain of "SRS0=eSXo=66=goodmis.org=rostedt@kernel.org" designates 145.40.68.75 as permitted sender) smtp.mailfrom="SRS0=eSXo=66=goodmis.org=rostedt@kernel.org" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1678116531; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=P7xkTsUig6kD4bWfrZGGY3wPdtggPxel1p9qtUboDbM=; b=EaTYxrote20Djv7aJ0yVZJXHTpFZwDfDeVjxELdhnLQgLJr+w7T9uUjzshH6jSUwu1L9Ri tjrP7MJIp9eqCdV0/1a4BcBf8JNrcp8HqM9UtXLGmiFX7XdW58ttF6rmojwZcZ7LM1B3SW r9YKyyUKDIla8Shk0QjJQ4hUenLoc74= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf27.hostedemail.com: domain of "SRS0=eSXo=66=goodmis.org=rostedt@kernel.org" designates 145.40.68.75 as permitted sender) smtp.mailfrom="SRS0=eSXo=66=goodmis.org=rostedt@kernel.org" ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1678116531; a=rsa-sha256; cv=none; b=4ZA8qNOKmiwESttujD/Yk1jqzgeopDmkRj3PQ7ONqvo4zvLrIkYjaYEwnMS9v17WktkMCN E4cK+SxWVKH3TipSAYa39jVopeK02ONGQySzOBqWaW0iwssSYAQsuY2Zl9mLlGaI6/YVSH hZLkRlso2CfDP3cr8kfO0Nty9qbDEeM= Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 86CDCB80D70; Mon, 6 Mar 2023 15:28:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1B43CC433EF; Mon, 6 Mar 2023 15:28:46 +0000 (UTC) Date: Mon, 6 Mar 2023 10:28:44 -0500 From: Steven Rostedt To: Hillf Danton Cc: John Stultz , LKML , Wei Wang , Midas Chien , "Chunhui Li (=?UTF-8?B?5p2O5pil6L6J?=)" , Kees Cook , Anton Vorontsov , "Guilherme G. Piccoli" , Tony Luck , linux-mm@kvack.org Subject: Re: [PATCH v2] pstore: Revert pmsg_lock back to a normal mutex Message-ID: <20230306102844.1293adfa@gandalf.local.home> In-Reply-To: <20230306010323.2909-1-hdanton@sina.com> References: <20230302062741.483079-1-jstultz@google.com> <20230304031029.3037914-1-jstultz@google.com> <20230306010323.2909-1-hdanton@sina.com> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 3682C40020 X-Stat-Signature: 5fncxs6xiaq8ma98cbkmffubatke36dw X-Rspam-User: X-HE-Tag: 1678116530-351882 X-HE-Meta: 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 z+JxnoI/ 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 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: On Mon, 6 Mar 2023 09:03:23 +0800 Hillf Danton wrote: > PS what sense made by spinning on owner until need_resched() with preempt > disabled in the non-rt context? Not sure what the question you have here is? If need_resched() is set, we want to schedule out. -- Steve