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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, 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 8E2D3C43381 for ; Thu, 7 Mar 2019 05:20:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 617DC20661 for ; Thu, 7 Mar 2019 05:20:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726379AbfCGFUk (ORCPT ); Thu, 7 Mar 2019 00:20:40 -0500 Received: from out30-44.freemail.mail.aliyun.com ([115.124.30.44]:37160 "EHLO out30-44.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725799AbfCGFUk (ORCPT ); Thu, 7 Mar 2019 00:20:40 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R231e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e07487;MF=shile.zhang@linux.alibaba.com;NM=1;PH=DS;RN=5;SR=0;TI=SMTPD_---0TM9p0ws_1551935730; Received: from e18g09479.et15sqa.tbsite.net(mailfrom:shile.zhang@linux.alibaba.com fp:SMTPD_---0TM9p0ws_1551935730) by smtp.aliyun-inc.com(127.0.0.1); Thu, 07 Mar 2019 13:15:41 +0800 From: shile.zhang@linux.alibaba.com To: Coly Li , Kent Overstreet Cc: linux-bcache@vger.kernel.org, linux-kernel@vger.kernel.org, Shile Zhang Subject: [PATCH] bcache: add cond_resched() in __bch_cache_cmp() Date: Thu, 7 Mar 2019 13:15:28 +0800 Message-Id: <1551935728-243664-1-git-send-email-shile.zhang@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shile Zhang Read /sys/fs/bcache//cacheN/priority_stats can take very long time with huge cache after long run. Signed-off-by: Shile Zhang --- drivers/md/bcache/sysfs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 557a8a3..028fea1 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -897,6 +897,7 @@ static void bch_cache_set_internal_release(struct kobject *k) static int __bch_cache_cmp(const void *l, const void *r) { + cond_resched(); return *((uint16_t *)r) - *((uint16_t *)l); } -- 1.8.3.1