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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 DD447ECDE4B for ; Thu, 8 Nov 2018 21:58:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 97F9221019 for ; Thu, 8 Nov 2018 21:58:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="FIQXW0dw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 97F9221019 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729655AbeKIHfl (ORCPT ); Fri, 9 Nov 2018 02:35:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:52666 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728279AbeKIHfl (ORCPT ); Fri, 9 Nov 2018 02:35:41 -0500 Received: from localhost (unknown [208.72.13.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 75F1C20989; Thu, 8 Nov 2018 21:58:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541714293; bh=VRaUHSfNGEu9HzsmlARPdRFB3KDqMTY0GELuDWZ09OA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FIQXW0dwITwnq2Ww05694afHs3kGJJqD/UQzj4qDnU2aFD53SSsQDIf9/YN3GYFN5 1YWIntB6ABNxb0yjIPvK/3X0BrI7FFeey1HW1iqECMqtdapwHwRo9okhouvRT9QqAt RUgqJvgwYsKeMUUZgK64R9izaa5YG7h5Z108tDYE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Khazhismel Kumykov , OGAWA Hirofumi , Andrew Morton , Sasha Levin Subject: [PATCH 3.18 127/144] fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() Date: Thu, 8 Nov 2018 13:51:38 -0800 Message-Id: <20181108215107.313990327@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181108215054.826084593@linuxfoundation.org> References: <20181108215054.826084593@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit ac081c3be3fae6d0cc3e1862507fca3862d30b67 ] On non-preempt kernels this loop can take a long time (more than 50 ticks) processing through entries. Link: http://lkml.kernel.org/r/20181010172623.57033-1-khazhy@google.com Signed-off-by: Khazhismel Kumykov Acked-by: OGAWA Hirofumi Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- fs/fat/fatent.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c index 08b3db146888..83550ac31f49 100644 --- a/fs/fat/fatent.c +++ b/fs/fat/fatent.c @@ -684,6 +684,7 @@ int fat_count_free_clusters(struct super_block *sb) if (ops->ent_get(&fatent) == FAT_ENT_FREE) free++; } while (fat_ent_next(sbi, &fatent)); + cond_resched(); } sbi->free_clusters = free; sbi->free_clus_valid = 1; -- 2.17.1