From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out30-112.freemail.mail.aliyun.com (out30-112.freemail.mail.aliyun.com [115.124.30.112]) (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 92DA31BC2A; Mon, 30 Jun 2025 01:18:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.112 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751246339; cv=none; b=a4rvERifr1t796ahYjSwoMTmTCksw7aqLFrcWhylNZNRBwx+rX9XUL3qhgiZYxbIq5Qfk3/R0LfSD/3N1Jtu3/XOgGJ7AWD6+xBY8l6uzDq74nGAkkXzcaT5oCZWRZgtiobSkd6O5xV7S9WBo4i0VSZ9KgBR03k/kBY9Y5gm3GQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751246339; c=relaxed/simple; bh=RbZOpy8J0k5RuQe6TfwdpEBKFEQv7E87hUnTEjHxunw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=celMWC0KYi64lJ1p5pmDGNrtABiQ9SNb9PwPNxO7WyCaoVq71/wbIMYjEWu/HPFNDiteEOqJ+zzKK22AiGp0KE+psz3lcUtMYazS9DAgDOb1OoJAoMTJ6uOMRFD3iHUAFVGMQZ7M9FUNeuepo/vAvDqbPnGlOlAexMMjRNsuElI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=t/LHqihr; arc=none smtp.client-ip=115.124.30.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="t/LHqihr" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1751246328; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; bh=RbZOpy8J0k5RuQe6TfwdpEBKFEQv7E87hUnTEjHxunw=; b=t/LHqihrskVy6VS5sWIGW/gbybXBOmjMXIaxNd7ZtpYz4VC3rK21Z+L5ZjoCuR6NcqpHyQ7kTSRR6/W7f3V60tKKzxyPF5PY0A1B0GWVmon8i96GvJDacQJPCIjqP5wPVcpnAqvsWpWqbJzG1RvSz6/hcMjmRUVaZHAEQlJwy8U= Received: from DESKTOP-5N7EMDA(mailfrom:ying.huang@linux.alibaba.com fp:SMTPD_---0Wg2L3YV_1751246322 cluster:ay36) by smtp.aliyun-inc.com; Mon, 30 Jun 2025 09:18:43 +0800 From: "Huang, Ying" To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, virtualization@lists.linux.dev, linux-fsdevel@vger.kernel.org, Andrew Morton , Jonathan Corbet , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Jerrin Shaji George , Arnd Bergmann , Greg Kroah-Hartman , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , Eugenio =?utf-8?Q?P=C3=A9rez?= , Alexander Viro , Christian Brauner , Jan Kara , Zi Yan , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Alistair Popple , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , "Matthew Wilcox (Oracle)" , Minchan Kim , Sergey Senozhatsky , Brendan Jackman , Johannes Weiner , Jason Gunthorpe , John Hubbard , Peter Xu , Xu Xin , Chengming Zhou , Miaohe Lin , Naoya Horiguchi , Oscar Salvador , Rik van Riel , Harry Yoo , Qi Zheng , Shakeel Butt Subject: Re: [PATCH RFC 13/29] mm/balloon_compaction: stop using __ClearPageMovable() In-Reply-To: <20250618174014.1168640-14-david@redhat.com> (David Hildenbrand's message of "Wed, 18 Jun 2025 19:39:56 +0200") References: <20250618174014.1168640-1-david@redhat.com> <20250618174014.1168640-14-david@redhat.com> Date: Mon, 30 Jun 2025 09:18:42 +0800 Message-ID: <87ldpaowlp.fsf@DESKTOP-5N7EMDA> User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ascii David Hildenbrand writes: > We can just look at the balloon device (stored in page->private), to see > of the page is still part of the balloon. s/of/if/ ? just a trivial issue if I'm not wrong. > As isolated balloon pages cannot get released (they are taken off the > balloon list while isolated), we don't have to worry about this case in > the putback and migration callback. Add a WARN_ON_ONCE for now. > > Signed-off-by: David Hildenbrand [snip] --- Best Regards, Huang, Ying