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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 CE08CC4361B for ; Tue, 15 Dec 2020 03:03:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 785C8224BE for ; Tue, 15 Dec 2020 03:03:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 785C8224BE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2195C6B007B; Mon, 14 Dec 2020 22:03:50 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 1EFC46B007D; Mon, 14 Dec 2020 22:03:50 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0DFB96B007E; Mon, 14 Dec 2020 22:03:50 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0145.hostedemail.com [216.40.44.145]) by kanga.kvack.org (Postfix) with ESMTP id EA9B36B007B for ; Mon, 14 Dec 2020 22:03:49 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id A9AA88249980 for ; Tue, 15 Dec 2020 03:03:49 +0000 (UTC) X-FDA: 77594021778.11.ants32_580a13127420 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin11.hostedemail.com (Postfix) with ESMTP id E83D2180F8B8B for ; Tue, 15 Dec 2020 03:03:48 +0000 (UTC) X-HE-Tag: ants32_580a13127420 X-Filterd-Recvd-Size: 2530 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf39.hostedemail.com (Postfix) with ESMTP for ; Tue, 15 Dec 2020 03:03:48 +0000 (UTC) Date: Mon, 14 Dec 2020 19:03:47 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1608001427; bh=BrOs31bzRzbga8iT77pebv9RMCkDkAX3J0D5AQxY54c=; h=From:To:Subject:In-Reply-To:From; b=VTCJQBzAZvQwsKu9eWSmDIjmQwdy7K4FzUjTpERUfFmKSPmstlGS3PAScvYvzCqFN D0W8eeGLDyLGyf6J7CFlZSL+sxqZAsyksBAzoLVM66CnimR4nT7r8v6ePh3RILZNDk KJn5lK+ANZyF1WiLFPfpq/G3PI+zweq2fnIM4fnI= From: Andrew Morton To: akpm@linux-foundation.org, cl@linux.com, iamjoonsoo.kim@lge.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, penberg@kernel.org, rientjes@google.com, sh_def@163.com, torvalds@linux-foundation.org Subject: [patch 011/200] mm/slab_common.c: use list_for_each_entry in dump_unreclaimable_slab() Message-ID: <20201215030347.ipFWzEFOp%akpm@linux-foundation.org> In-Reply-To: <20201214190237.a17b70ae14f129e2dca3d204@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Hui Su Subject: mm/slab_common.c: use list_for_each_entry in dump_unreclaimable_slab() dump_unreclaimable_slab() acquires the slab_mutex first, and it won't remove any slab_caches list entry when itering the slab_caches lists. Thus we do not need list_for_each_entry_safe here, which is against removal of list entry. Link: https://lkml.kernel.org/r/20200926043440.GA180545@rlk Signed-off-by: Hui Su Cc: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Signed-off-by: Andrew Morton --- mm/slab_common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/slab_common.c~mmslab_common-use-list_for_each_entry-in-dump_unreclaimable_slab +++ a/mm/slab_common.c @@ -978,7 +978,7 @@ static int slab_show(struct seq_file *m, void dump_unreclaimable_slab(void) { - struct kmem_cache *s, *s2; + struct kmem_cache *s; struct slabinfo sinfo; /* @@ -996,7 +996,7 @@ void dump_unreclaimable_slab(void) pr_info("Unreclaimable slab info:\n"); pr_info("Name Used Total\n"); - list_for_each_entry_safe(s, s2, &slab_caches, list) { + list_for_each_entry(s, &slab_caches, list) { if (s->flags & SLAB_RECLAIM_ACCOUNT) continue; _