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From:   "J. R. Okajima" <hooanon05g@gmail.com>
To:     Liam.Howlett@Oracle.com, yang.lee@linux.alibaba.com,
        yuzhao@google.com
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Subject: v6.1-rc1, remap_file_pages() and vma linked list?
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Content-ID: <29343.1666681759.1@jrobl>
Date:   Tue, 25 Oct 2022 16:09:19 +0900
Message-ID: <29344.1666681759@jrobl>
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Hello,

Linux-v4.10 has a commit
	48f7df329474 2016-02-18 mm: fix regression in remap_file_pages() emulation
and it contains a small test program where remap_file_pages() will split
a region into two VMAs.

Linux-v6.1-rc1 remap_file_pages() doesn't pass that old test.
I tried investigation, but I am not good in this tech field. I could
only find there may be related to the commit
	763ecb035029 2022-09-26 mm: remove the vma linked list
but I am not sure.
How can we make the old test pass?
"Don't use remap_file_pages()" or "Ignore such old test" is not an
option.


J. R. Okajima