From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4C0C41DE3AD; Sun, 15 Mar 2026 00:23:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773534204; cv=none; b=jLSl5QniQOsVfW4mIofEqyQXCpNrhKeAatmNPlK5dfeBXQ9GRg7cE75sngz1Su0Uj7olH8WLciPCNy0PPdTUy5hET+/hDiW3LVy2nWmp9oLv+qFs4XppmErnVqNIdO1FGT6Css9iaM7s+8RUXy61ZZujp5dqZGbI8gPavA40gLY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773534204; c=relaxed/simple; bh=h0sAMG+StH3IKnGuGSyIhM12sVYTUh2nJijKIIgMlDw=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=mRDXVR0vRa5x0RmKkks7AYckfJCiVk5laXUOKgXeC4z+FTo4IEVS89g4la02spyguRGG53dFj5CiUObkv7TSXzcVkmbG+/ElbC8xJO6bTa1fhnq1Xfe7dCIJ6fnHcV6Vihy2PFwxmLy4/o5eEEkSkhd8TG1mxqD1AXg9dfFxqNI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=00G8LLBD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="00G8LLBD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 993F8C116C6; Sun, 15 Mar 2026 00:23:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1773534203; bh=h0sAMG+StH3IKnGuGSyIhM12sVYTUh2nJijKIIgMlDw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=00G8LLBDByge+9fnmNBx+Qqz6ilOPRNsD2R1H2Nw2RoFQrUsPLn/raG2j+v1saPrT XlcZyHn2PRx8OM/hmJUQQc6nw+jeIbvu2OLyzWB+aOI7ZSiQxCLllQNg1+sXVUECmB bVlgkTdjvyDwBp4xaD58YxCUQK2AnPopZhINDpDw= Date: Sat, 14 Mar 2026 17:23:21 -0700 From: Andrew Morton To: SeongJae Park Cc: Usama Arif , npache@redhat.com, david@kernel.org, ziy@nvidia.com, willy@infradead.org, linux-mm@kvack.org, matthew.brost@intel.com, joshua.hahnjy@gmail.com, hannes@cmpxchg.org, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, apopple@nvidia.com, linux-kernel@vger.kernel.org, kernel-team@meta.com, richard.weiyang@gmail.com, stable@vger.kernel.org Subject: Re: [PATCH v3] mm: migrate: requeue destination folio on deferred split queue Message-Id: <20260314172321.3ca062bb70e51fefa633a6fe@linux-foundation.org> In-Reply-To: <20260315000555.76876-1-sj@kernel.org> References: <20260314154042.327ba957b1a8c10f64ae0169@linux-foundation.org> <20260315000555.76876-1-sj@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Sat, 14 Mar 2026 17:05:54 -0700 SeongJae Park wrote: > Because THPs are > removed from the deferred_list, THP shinker cannot split the underutilized THPs > in time. As a result, users will show less free memory than before. That'll do, thanks ;) Pasted, added cc:stable. It's been there since 6.12 so I don't see a need to rush this in, so I won't move this into mm-hotfixes - it'll go into mainline for 7.1-rc1 after which -stable should pick it up.