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 62B2E15A8 for ; Mon, 30 Jun 2025 01:18:54 +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=1751246337; cv=none; b=kBhhD5MtRu2dMtvSwn8A+E9BXOynxBxyo3j3G8FmS39lt8GfmM5Q2OZqvtG46VKRruF+aIO2fBfANA+I2m8f3sXPvwuh3x9B3kIHuSuyqHBeAoJdFPpfFU46q8mI3urwn3GlZmONuzI8v9VMMYa30wUudfB21oQDJsMid4+dAmU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751246337; c=relaxed/simple; bh=RbZOpy8J0k5RuQe6TfwdpEBKFEQv7E87hUnTEjHxunw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=osuvu7WqdIQaeHEjkxP/dssWGQidVB7eTsaXR7opCcOELjr7WdYSi2IgOsFJkcZHzUZrT5eAQhfO5KRc+yJbsn2X5LjgFwidUjeJlAsH07egUmT/2I4NcsxzInX7vBZjMvktf/25w7KPs0z8Ek223EFICUiAheoA2Sg5E7pSdfA= 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=e3Usm7JX; 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="e3Usm7JX" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1751246327; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; bh=RbZOpy8J0k5RuQe6TfwdpEBKFEQv7E87hUnTEjHxunw=; b=e3Usm7JX62/lShfnLGXJEYUQBHkBM1W3N6G+pWyn3J8vywke3JuhDEQB71MTN0ZtRDSwBD+w+MVoQfO+Qzqc64pU4taiWl6EfrNt7zknFHVDhkAWHyWJ3jT/MxhQo09t4rlAVb+V69xEvrmRTCZXgzgp8qLrnzuLkc851SR52zI= 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: virtualization@lists.linux.dev 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