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=-20.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 481DEC07E9B for ; Mon, 19 Jul 2021 15:53:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 306EC61289 for ; Mon, 19 Jul 2021 15:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345827AbhGSPMq (ORCPT ); Mon, 19 Jul 2021 11:12:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:40442 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344387AbhGSOsr (ORCPT ); Mon, 19 Jul 2021 10:48:47 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0A77F61419; Mon, 19 Jul 2021 15:28:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626708514; bh=TNnwHyBmh1ARN61DyuJGeVepLm+XKYUVYIrHk0svcNM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c9GvLeXRAnHxXldHwAXKcrLe11PyscMzYBUDBafTeyQRRb2ZHgEGVJlpbUBYz/slY ydbYo/7kBNMN0STPP+3mrPxBzH7KKRKKwBGs/tg1LCq/E+uALVq4WHDuikLP1eJulc s3/NrLachz9rI3pUeqIlWf7KJhjmR5AYPQzQ84sQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zhang Yi , Jan Kara , Theodore Tso Subject: [PATCH 4.19 022/421] ext4: correct the cache_nr in tracepoint ext4_es_shrink_exit Date: Mon, 19 Jul 2021 16:47:13 +0200 Message-Id: <20210719144947.033424118@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144946.310399455@linuxfoundation.org> References: <20210719144946.310399455@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zhang Yi commit 4fb7c70a889ead2e91e184895ac6e5354b759135 upstream. The cache_cnt parameter of tracepoint ext4_es_shrink_exit means the remaining cache count after shrink, but now it is the cache count before shrink, fix it by read sbi->s_extent_cache_cnt again. Fixes: 1ab6c4997e04 ("fs: convert fs shrinkers to new scan/count API") Cc: stable@vger.kernel.org # 3.12+ Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20210522103045.690103-3-yi.zhang@huawei.com Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- fs/ext4/extents_status.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -1085,6 +1085,7 @@ static unsigned long ext4_es_scan(struct nr_shrunk = __es_shrink(sbi, nr_to_scan, NULL); + ret = percpu_counter_read_positive(&sbi->s_es_stats.es_stats_shk_cnt); trace_ext4_es_shrink_scan_exit(sbi->s_sb, nr_shrunk, ret); return nr_shrunk; }