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Date: Mon, 20 Nov 2023 20:46:01 -0800
From: Christoph Hellwig <hch@infradead.org>
To: Usama Arif <usama.arif@bytedance.com>
Cc: dan.j.williams@intel.com, vishal.l.verma@intel.com,
	dave.jiang@intel.com, nvdimm@lists.linux.dev, linux-mm@kvack.org,
	linux-fsdevel@vger.kernel.org, Fam Zheng <fam.zheng@bytedance.com>,
	"liangma@liangbit.com" <liangma@liangbit.com>
Subject: Re: Conditions for FOLL_LONGTERM mapping in fsdax
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References: <172ab047-0dc7-1704-5f30-ec7cd3632e09@bytedance.com>
 <454dbfa1-2120-1e40-2582-d661203decca@bytedance.com>
 <a0d67f2d-f66b-8873-7c11-31d90aae8e8c@bytedance.com>
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We don't have any way to recall the LONGTERM mappings, so we can't
support them on DAX for now.