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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6780FCD6E56 for ; Mon, 1 Jun 2026 10:40:15 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 861CD6B0314; Mon, 1 Jun 2026 06:40:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 812766B0315; Mon, 1 Jun 2026 06:40:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 728326B0316; Mon, 1 Jun 2026 06:40:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 611E06B0314 for ; Mon, 1 Jun 2026 06:40:14 -0400 (EDT) Received: from smtpin28.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay10.hostedemail.com (Postfix) with ESMTP id B471DC22BC for ; Mon, 1 Jun 2026 10:40:13 +0000 (UTC) X-FDA: 84830999106.28.10AD58D Received: from out-174.mta1.migadu.com (out-174.mta1.migadu.com [95.215.58.174]) by imf11.hostedemail.com (Postfix) with ESMTP id 0494C40008 for ; Mon, 1 Jun 2026 10:40:11 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=FjACQjOW; spf=pass (imf11.hostedemail.com: domain of lance.yang@linux.dev designates 95.215.58.174 as permitted sender) smtp.mailfrom=lance.yang@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1780310412; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=+kxihP4QbZH/SbV81BhxMKE8qdk0EBh4QHfFzGdZZ1g=; b=aQ8vz37lUGRwyw6cxYfQLaoQBHAf44vZBrUq3ybCrTbKAb3axxJI/OXQWA0OtpXmio6jxQ 50kLlJXI0O29oyasOi3L63GT2KD10fkbv2B5TqNqWjb14oAdqZJi67d5WN3d4nAzBCZOEe uWtDo0/RrRYv7PfIFBk1qdTIFhCqL1s= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=FjACQjOW; spf=pass (imf11.hostedemail.com: domain of lance.yang@linux.dev designates 95.215.58.174 as permitted sender) smtp.mailfrom=lance.yang@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1780310412; a=rsa-sha256; cv=none; b=mPCHySW50CSahx8/HrsxzIy4GhQU/A1uXNJI3JiUbGWvwesgsjpOs/1oNe8cXVj9LAMl2+ QJFnUiOvITnCE2KFV40z4C3mz9un/peWKr8X1SC2MaeADazz8x2V29piiNXo9sg7KMfZCD IhKEJh0GgNP7nsW98pJ1YDCx/I3kG0w= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1780310409; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+kxihP4QbZH/SbV81BhxMKE8qdk0EBh4QHfFzGdZZ1g=; b=FjACQjOW1MOQtoUqCCNCGVBX+brPhDYVowfPvlbVuB2B7NGhsRgGhCegZQHJTQHw8+9xR4 RSmQ4zKh26ma4ohTxjq+VqQQlcmn+ejFhVGkVvqdkz77SAZgJsdbfmBAJT/cwR8371K8MS iugrU/Lsa7XIbrkFN17aqtQjZ4L9hIU= From: Lance Yang To: hannes@cmpxchg.org Cc: akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org, shakeel.butt@linux.dev, mhocko@kernel.org, david@fromorbit.com, roman.gushchin@linux.dev, muchun.song@linux.dev, qi.zheng@linux.dev, yosry.ahmed@linux.dev, ziy@nvidia.com, liam@infradead.org, usama.arif@linux.dev, kas@kernel.org, vbabka@kernel.org, ryncsn@gmail.com, zaslonko@linux.ibm.com, gor@linux.ibm.com, baolin.wang@linux.alibaba.com, baohua@kernel.org, dev.jain@arm.com, lance.yang@linux.dev, npache@redhat.com, ryan.roberts@arm.com, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 9/9] mm: switch deferred split shrinker to list_lru Date: Mon, 1 Jun 2026 18:39:47 +0800 Message-Id: <20260601103947.63923-1-lance.yang@linux.dev> In-Reply-To: <20260527204757.2544958-10-hannes@cmpxchg.org> References: <20260527204757.2544958-10-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Stat-Signature: aho5nkiguadkkfu6ywwubfgakf3rugf9 X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 0494C40008 X-HE-Tag: 1780310411-680463 X-HE-Meta: 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 frOHSwFv 6c2QuME1WiCVgEZRVpqDmtqOzMdF9tTRQosCyr9Km2GeYyhphLPFWRegtblEdLchnmKFSM2m2SZCUfhB1OX7GkjL9zglzMUBWpW8dkvlGFBFL47aDtRS4GMNXpn8qOf4MWSgtB7XKDrezyCd1n1BKWsTm4tqSnsBAehty1oeQ8z0yvj3mKy+Ui+7zr+Q1+gyw3sfOb/b6vpXXru6V/SgtwNEvLdH7mvZDLIENH9XnaEKl2T2a5OhHHG8ROb06YANBQ/65KmrimJkbYAjL7cmrU5AVJwN8gyoxsqfZ Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, May 27, 2026 at 04:45:16PM -0400, Johannes Weiner wrote: [...] >diff --git a/mm/memory.c b/mm/memory.c >index 135f5c0f57bd..f22e61d8c8de 100644 >--- a/mm/memory.c >+++ b/mm/memory.c >@@ -5222,6 +5222,10 @@ static struct folio *alloc_anon_folio(struct vm_fault *vmf) > folio_put(folio); > goto next; > } >+ if (order > 1 && folio_memcg_alloc_deferred(folio)) { >+ folio_put(folio); Missing a MTHP_STAT_ANON_FAULT_FALLBACK bump here? Since we jump straight to fallback and end up at order-0 :) >+ goto fallback; >+ } > folio_throttle_swaprate(folio, gfp); > /* > * When a folio is not zeroed during allocation [...] Cheers, Lance