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=-15.7 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,URIBL_BLOCKED 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 DD8BAC433E9 for ; Wed, 24 Feb 2021 20:06:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A65F64F25 for ; Wed, 24 Feb 2021 20:06:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234632AbhBXUGU (ORCPT ); Wed, 24 Feb 2021 15:06:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:56156 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235279AbhBXUFv (ORCPT ); Wed, 24 Feb 2021 15:05:51 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id CC04464F34; Wed, 24 Feb 2021 20:04:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614197067; bh=ZM3i/IwR0/R6XZBVEpCe3w7JVAyigaLJFGrhMVLQt40=; h=Date:From:To:Subject:In-Reply-To:From; b=Y7O7f3i2GzIa4txrrDQj0QZunST22mFHG5bZbVk4fdMh/TfeUej+BBGkSklhh2f0+ sjCR+0a15xfOCbFFZA4pYeAPlFuzNVXQ7IasxXDcCn/IIy6REhPqPNdd3DSgHE7uZ2 zW4Prw9QwP8SUEVOI4ykLJls1yFFzQEJXllI0MZA= Date: Wed, 24 Feb 2021 12:04:26 -0800 From: Andrew Morton To: akpm@linux-foundation.org, guro@fb.com, hannes@cmpxchg.org, linux-mm@kvack.org, mhocko@kernel.org, mkoutny@suse.com, mm-commits@vger.kernel.org, shakeelb@google.com, songmuchun@bytedance.com, torvalds@linux-foundation.org, vdavydov.dev@gmail.com Subject: [patch 075/173] mm: memcontrol: fix slub memory accounting Message-ID: <20210224200426.vEeBLOjbH%akpm@linux-foundation.org> In-Reply-To: <20210224115824.1e289a6895087f10c41dd8d6@linux-foundation.org> User-Agent: s-nail v14.8.16 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org =46rom: Muchun Song Subject: mm: memcontrol: fix slub memory accounting SLUB currently account kmalloc() and kmalloc_node() allocations larger than order-1 page per-node. But it forget to update the per-memcg vmstats. So it can lead to inaccurate statistics of "slab_unreclaimable" which is from memory.stat. Fix it by using mod_lruvec_page_state instead of mod_node_page_state. Link: https://lkml.kernel.org/r/20210223092423.42420-1-songmuchun@bytedance= .com Fixes: 6a486c0ad4dc ("mm, sl[ou]b: improve memory accounting") Signed-off-by: Muchun Song Reviewed-by: Shakeel Butt Reviewed-by: Roman Gushchin Reviewed-by: Michal Koutn=C3=BD Cc: Johannes Weiner Cc: Michal Hocko Cc: Vladimir Davydov Signed-off-by: Andrew Morton --- mm/slab_common.c | 4 ++-- mm/slub.c | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-) --- a/mm/slab_common.c~mm-memcontrol-fix-slub-memory-accounting +++ a/mm/slab_common.c @@ -898,8 +898,8 @@ void *kmalloc_order(size_t size, gfp_t f page =3D alloc_pages(flags, order); if (likely(page)) { ret =3D page_address(page); - mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, - PAGE_SIZE << order); + mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE_B, + PAGE_SIZE << order); } ret =3D kasan_kmalloc_large(ret, size, flags); /* As ret might get tagged, call kmemleak hook after KASAN. */ --- a/mm/slub.c~mm-memcontrol-fix-slub-memory-accounting +++ a/mm/slub.c @@ -4042,8 +4042,8 @@ static void *kmalloc_large_node(size_t s page =3D alloc_pages_node(node, flags, order); if (page) { ptr =3D page_address(page); - mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, - PAGE_SIZE << order); + mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE_B, + PAGE_SIZE << order); } =20 return kmalloc_large_node_hook(ptr, size, flags); @@ -4174,8 +4174,8 @@ void kfree(const void *x) =20 BUG_ON(!PageCompound(page)); kfree_hook(object); - mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, - -(PAGE_SIZE << order)); + mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE_B, + -(PAGE_SIZE << order)); __free_pages(page, order); return; } _