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 D14A61BC064 for ; Mon, 16 Dec 2024 06:10:16 +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=1734329416; cv=none; b=b2sVheyDja/XrkiDmBQ1tj543U6C3EUbp8cc7UjeQAKlBwNGjjErrfn6IeY9KabdEkW98NO6znRHn28yRbe/lrsHkqauYVnKBhFMplRweURJLqirQVH5lDoCSTl7JzJdUJLphQwOblzcsRd2i8UaMGitfKRhTNLUMhlkhcs8sCk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734329416; c=relaxed/simple; bh=1gZQIqyiwWcONrLVtGI2TjmmbY9fCtHnq0EGsLdNpGk=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=kdSVleV+rjoCsvJ6bJi1W5hFPgvMCIuuZQce4eNxWqM5tf85oWVRDOcpB46J/SoyG5KZ6yKaZifN+Kcjh6/NKw3TRJn/RnvRFmVseEEqjNrgFRBwiaMBWGh//lKzUdZDNGxL4Su84rZgysyY8m7fewGbLyQcRgk/WZWcxIwtXMo= 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=Nm4m9ZtN; 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="Nm4m9ZtN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA1EDC4CED0; Mon, 16 Dec 2024 06:10:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1734329416; bh=1gZQIqyiwWcONrLVtGI2TjmmbY9fCtHnq0EGsLdNpGk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=Nm4m9ZtNNzNVzf1kokB7yNbzF9UVHGgEglk4/GB85xNC97ILhtOua7pOLcfaAq4fW Weg8dcT51Aw9QvSTkZlwTT0WZh/h79+rLKSNtETpTAfHJKn36pwk5bxOo9lFxSwQ+e QqxgpKovMCYiFB9m3LrmJ/ZWXsdZeeU8wRk+qBkg= Date: Sun, 15 Dec 2024 22:10:15 -0800 From: Andrew Morton To: Qi Zheng Cc: Yu Zhao , peterz@infradead.org, tglx@linutronix.de, david@redhat.com, jannh@google.com, hughd@google.com, willy@infradead.org, muchun.song@linux.dev, vbabka@kernel.org, lorenzo.stoakes@oracle.com, rientjes@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/12] Revert "mm: pgtable: make ptlock be freed by RCU" Message-Id: <20241215221015.a567dbf38c9a98d672aecd3e@linux-foundation.org> In-Reply-To: <18bc52f4-ab02-495f-8f8f-87f69ea5b914@bytedance.com> References: <1fdb3ee32e6958ad82229941b2213ef76b7c4705.1734164094.git.zhengqi.arch@bytedance.com> <18bc52f4-ab02-495f-8f8f-87f69ea5b914@bytedance.com> 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 Sun, 15 Dec 2024 14:29:38 +0800 Qi Zheng wrote: > > > > Acked-by: Yu Zhao > > Thanks! Once the review of this patch series is completed, we can simply > drop "mm: pgtable: make ptlock be freed by RCU" from mm tree. Can we drop it now and does the remainder of the series "synchronously scan and reclaim empty user PTE pages v4" remain valid and useful?