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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 2AE03C433DF for ; Fri, 7 Aug 2020 06:21:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 093E322C9F for ; Fri, 7 Aug 2020 06:21:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596781286; bh=H58aq4rZBZxIDzcV4GGAxsC91DuutB//G1LzUWLK68M=; h=Date:From:To:Subject:In-Reply-To:Reply-To:List-ID:From; b=d44ZIkL05s36QK8ehh8X6BensMUJgeHcndsERMuL9l1XHw946rD/Toa6I05C30dbu xYZbDFn38PFGcN8xIEp+aokHUbwNNjO27dQ4c2S5j+y3kcR9FFjAP7xFh1Jz5a0kta ArGv6/aFbq/VD0uwJlcvVpM4pw/STQ/zAikhnmR0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725845AbgHGGVZ (ORCPT ); Fri, 7 Aug 2020 02:21:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:57606 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725805AbgHGGVZ (ORCPT ); Fri, 7 Aug 2020 02:21:25 -0400 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (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 AA56C2177B; Fri, 7 Aug 2020 06:21:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596781285; bh=H58aq4rZBZxIDzcV4GGAxsC91DuutB//G1LzUWLK68M=; h=Date:From:To:Subject:In-Reply-To:From; b=xwGUHggNTHMlgi03GcRh+3SQT5Gy2R1e/5+Muw4nngZ35vkI9xj39YetpuWAvN+jK AQjkmAyykePNZhnyL6HVo3jR3XNhzNLxTx/jtMIqgG46iEySWjndICb234JsudDRDB ohG3xewR4mk+lzGF9LdWw96/gxipx7/+HBTUpXGI= Date: Thu, 06 Aug 2020 23:21:24 -0700 From: Andrew Morton To: akpm@linux-foundation.org, cl@linux.com, guro@fb.com, hannes@cmpxchg.org, linux-mm@kvack.org, mhocko@kernel.org, mm-commits@vger.kernel.org, shakeelb@google.com, tj@kernel.org, torvalds@linux-foundation.org, vbabka@suse.cz Subject: [patch 077/163] mm: memcg/slab: remove redundant check in memcg_accumulate_slabinfo() Message-ID: <20200807062124.HxrApR2M-%akpm@linux-foundation.org> In-Reply-To: <20200806231643.a2711a608dd0f18bff2caf2b@linux-foundation.org> User-Agent: s-nail v14.8.16 Sender: mm-commits-owner@vger.kernel.org Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Roman Gushchin Subject: mm: memcg/slab: remove redundant check in memcg_accumulate_slabinfo() memcg_accumulate_slabinfo() is never called with a non-root kmem_cache as a first argument, so the is_root_cache(s) check is redundant and can be removed without any functional change. Link: http://lkml.kernel.org/r/20200623174037.3951353-17-guro@fb.com Signed-off-by: Roman Gushchin Reviewed-by: Vlastimil Babka Reviewed-by: Shakeel Butt Cc: Christoph Lameter Cc: Johannes Weiner Cc: Michal Hocko Cc: Tejun Heo Signed-off-by: Andrew Morton --- mm/slab_common.c | 3 --- 1 file changed, 3 deletions(-) --- a/mm/slab_common.c~mm-memcg-slab-remove-redundant-check-in-memcg_accumulate_slabinfo +++ a/mm/slab_common.c @@ -1104,9 +1104,6 @@ memcg_accumulate_slabinfo(struct kmem_ca struct kmem_cache *c; struct slabinfo sinfo; - if (!is_root_cache(s)) - return; - c = memcg_cache(s); if (c) { memset(&sinfo, 0, sizeof(sinfo)); _