From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 4C5F131F9B0; Fri, 22 May 2026 07:45:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779435912; cv=none; b=iKxxNvG/oQrn+Jeavw+LJKzqRLVCwNl9pX4LyhxIYnDUr21FtEhWMTHJ9qC1MwAPpxI8EeVjG/d+xTxMtQej5UHKC6Gk1Q9s5Wd6QeqYTvx/7VAHlReAzY0ThwPvgOPIete6KfhmEnVrCrpD1ywyGBqZzPxwe5Mgs/wh034kMAY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779435912; c=relaxed/simple; bh=Ib8axZjinxhozfhntpIXucBCGVl4CALrcaU9TbtnFyc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=EZT+EwZytmYwOcZGCCPBkbAE282C9EtBjOwgs149l4SzaTWMYVSpiR/O7nYAkrv/f4cGj3QaiosdG/7pncf2pUzAnaIDM5fb34BJC9q/056TH2FbP1xL3LlNAJxqTI+pGcRyFAHeD4N4a64zXCmjupB8M2bbMzV9K78dvEzGB04= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ENLrYjDI; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ENLrYjDI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D525D1F000E9; Fri, 22 May 2026 07:45:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779435910; bh=72bkGf8TpFe7R7yMNosUxkxRGjLquylKLDOkA3b7X0o=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=ENLrYjDII187/GnAQyg9/9GEbmnQHyUDrfHVlxPS1r+9N1XUrnCRiVJajy/KEk+k4 mziLakPQkRE5n1+HizkVqkZ9qYX9TZxmCcuJuTxO0O94S5HG0MK46sFnRYAvkh7GXU groMkIJPE/luoxAxjZf6VEuI0c7TvkWMxVj+3Ar2Y+IXtXwPHcwYDKtNWjDhkTUOk+ DJhafpe64hzzoEDowEiu1osDYYmyWo6w9i0hfmWCWytBqMTQIJ78Oq5enrW0GLYkdR dPBJdnh0cCoyMZOl8F9cYTq6y5TCB2v0H+XQsUE4VLcRNP4+0FWkqD1LMZVmwE4EUy Yg3TlLabpy82A== Message-ID: Date: Fri, 22 May 2026 09:45:02 +0200 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] Revert "mm: introduce a new page type for page pool in page type" Content-Language: en-US To: Byungchul Park , akpm@linux-foundation.org Cc: kernel_team@skhynix.com, ast@kernel.org, daniel@iogearbox.net, davem@davemloft.net, kuba@kernel.org, hawk@kernel.org, john.fastabend@gmail.com, sdf@fomichev.me, saeedm@nvidia.com, leon@kernel.org, tariqt@nvidia.com, mbloch@nvidia.com, andrew+netdev@lunn.ch, edumazet@google.com, pabeni@redhat.com, david@kernel.org, ljs@kernel.org, liam@infradead.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, horms@kernel.org, jackmanb@google.com, hannes@cmpxchg.org, ziy@nvidia.com, ilias.apalodimas@linaro.org, kas@kernel.org, willy@infradead.org, baolin.wang@linux.alibaba.com, asml.silence@gmail.com, toke@redhat.com, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20260515034701.17027-1-byungchul@sk.com> From: "Vlastimil Babka (SUSE)" In-Reply-To: <20260515034701.17027-1-byungchul@sk.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 5/15/26 05:47, Byungchul Park wrote: > This reverts commit db359fccf212e7fa3136e6edbed6228475646fd7. > > Netpp page_type'ed pages might be used in mapping so as to use > @_mapcount. However, since @page_type and @_mapcount are union'ed in > struct page, these two can't be used at the same time. Revert the > commit introducing page_type for Netpp for now. > > The patch will be retried once @page_type and @_mapcount get allowed to > be used at the same time. > > The revert also includes removal of @page_type initialization part > introduced by commit 735a309b4bfb9e ("net: add net_iov_init() and use it > to initialize ->page_type"), which will be restored on the retry. > > Reported-by: Dragos Tatulea > Closes: https://lore.kernel.org/all/982b9bc1-0a0a-4fc5-8e3a-3672db2b29a1@nvidia.com > Signed-off-by: Byungchul Park Unfortunate that it didn't work out yet. Acked-by: Vlastimil Babka (SUSE) Thanks!