From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1133089-1521804830-2-2060287258284627861 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521804830; b=GhWNJt3UKrAD+ua17YQKLjqvwYdQDwlveqGO9OrGAWbTE84 jabPBJ/LNBq1K/GhZh8+PRWFs2pFvwRQMGRgrWm9DHszG7z3WsjsCFZx+j8/BwE5 /AAZQ0gkjD4aaviCLS1Tyj0s1YxHl8mY43VD+b3XzgwZ0Mul66WFJiAMU1Icb27H KA5+Nni+oZ2S/vqilz5nBh5sCCpT1yFzk7x4bYR1um8CO7qpepu3MyM5+F24CJ5K mC75VCFKwBwdCG232bB0YCGbDw38IT635DmTm8nZvR6UIjeGOj0f1IiSGFnXtEu3 0RH43iWLb3zvqZl6QkU7+cQLFOOzAhwF873Lgrw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521804830; bh=DOYW5/AdjZ5gfO5eGDXPk539Vu DMc5IfbpyabX3n1yc=; b=eyNwOkcf5FI6Qy6xWMKkLhFzgLzKOJAPl7FuNyFqSg PttZekCG3pTmJGJgu7IfnNUAvZoE4cPYhrANuNeuLe7QBwDdXtS1R9tYdcBawnVM xVJClZ5xw/1t0zL1aBtEZmdRqByH+sg6aPnOyuKNDP9IRTnKipBaAL6JjnYgPn1e dVgDd9bel/GwRG0kUIh+HuMi/s0sVps7wT3y2l+tZzIVALtEzyxybxra9/fuy6rr 6JI74y+WUYgFWS9VMoZhdMJXXM+wsUz6csYG+fpOaWOZJLyQo0c0EGxRu1zHo12s CYY+WrzXd9RNsJSsjbOhPdOdJyZmwXBXtanarAKyKZ1g== ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755321AbeCWLdf (ORCPT ); Fri, 23 Mar 2018 07:33:35 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:39762 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755018AbeCWKFf (ORCPT ); Fri, 23 Mar 2018 06:05:35 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Guoqing Jiang , NeilBrown , Shaohua Li , Sasha Levin Subject: [PATCH 4.9 039/177] md/raid10: wait up frozen array in handle_write_completed Date: Fri, 23 Mar 2018 10:52:47 +0100 Message-Id: <20180323094206.886790183@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323094205.090519271@linuxfoundation.org> References: <20180323094205.090519271@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guoqing Jiang [ Upstream commit cf25ae78fc50010f66b9be945017796da34c434d ] Since nr_queued is changed, we need to call wake_up here if the array is already frozen and waiting for condition "nr_pending == nr_queued + extra" to be true. And commit 824e47daddbf ("RAID1: avoid unnecessary spin locks in I/O barrier code") which has already added the wake_up for raid1. Signed-off-by: Guoqing Jiang Reviewed-by: NeilBrown Signed-off-by: Shaohua Li Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/md/raid10.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2704,6 +2704,11 @@ static void handle_write_completed(struc list_add(&r10_bio->retry_list, &conf->bio_end_io_list); conf->nr_queued++; spin_unlock_irq(&conf->device_lock); + /* + * In case freeze_array() is waiting for condition + * nr_pending == nr_queued + extra to be true. + */ + wake_up(&conf->wait_barrier); md_wakeup_thread(conf->mddev->thread); } else { if (test_bit(R10BIO_WriteError,