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=-9.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 696F2C004D3 for ; Mon, 22 Oct 2018 10:23:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2DEBD20652 for ; Mon, 22 Oct 2018 10:23:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="mokrBoil" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2DEBD20652 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.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 S1729427AbeJVSlK (ORCPT ); Mon, 22 Oct 2018 14:41:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:51922 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728369AbeJVSlJ (ORCPT ); Mon, 22 Oct 2018 14:41:09 -0400 Received: from sasha-vm.mshome.net (unknown [167.98.65.38]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 490C2208AE; Mon, 22 Oct 2018 10:23:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1540203794; bh=yUgnr2rEKP4dlaWxa1Q86JuhC+gdgZ/P8pkWCldjMhI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mokrBoil3BZjOmJSOE9Gk/4m9xvMwsDhhYyOhscFBtNHZ/yRYou2guEnseuacMihF ZcrmUHynFJ750NmZkOgMqLv9ZrLx7SOEWGucdUKy5wH4s1kIopnK/SHGd7fMX2bFn/ HnSoU5MdWgztrSJB4BW1ZGAn6+CaVvqPTyNVSXRg= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Khazhismel Kumykov , Andrew Morton , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH AUTOSEL 3.18 4/4] fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() Date: Mon, 22 Oct 2018 06:22:55 -0400 Message-Id: <20181022102255.41695-4-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181022102255.41695-1-sashal@kernel.org> References: <20181022102255.41695-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Khazhismel Kumykov [ 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