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=-8.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,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 B4509C32789 for ; Fri, 2 Nov 2018 18:42:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 819B82084D for ; Fri, 2 Nov 2018 18:42:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ILCojGky" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 819B82084D 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 S1729855AbeKCDu4 (ORCPT ); Fri, 2 Nov 2018 23:50:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:46074 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728033AbeKCDuz (ORCPT ); Fri, 2 Nov 2018 23:50:55 -0400 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (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 858232084A; Fri, 2 Nov 2018 18:42:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541184163; bh=QGlC5bGiuGuvYiu043agKkj4LXuJIBCsI3bh0+t2Uuc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ILCojGkygKzOGLEWGwyycun303yGV995B27JYXtiGGI1ERD/FuCN0cyc4nE3jOsuc bi7uoahteHCeofr+q5k//LYtwP45VulTd/XuY+BhUjQkVfzOG8cScYX3R32Ysb6fgX aaoxgBBcZgohWqGWSHduPZ0c+S3EWUJG8YO5dp3I= 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 4.18 099/150] fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() Date: Fri, 2 Nov 2018 19:34:21 +0100 Message-Id: <20181102182910.288113111@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181102182902.250560510@linuxfoundation.org> References: <20181102182902.250560510@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 4.18-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 3aef8630a4b9..95d2c716e0da 100644 --- a/fs/fat/fatent.c +++ b/fs/fat/fatent.c @@ -681,6 +681,7 @@ 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