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SubjectRe: [PATCH v13 0/7] fsdax: introduce fs query to support reflink
[ add Andrew and Naoya ]


On Wed, Apr 20, 2022 at 6:48 PM Shiyang Ruan <ruansy.fnst@fujitsu.com> wrote:
>
> Hi Dave,
>
> 在 2022/4/21 9:20, Dave Chinner 写道:
> > Hi Ruan,
> >
> > On Tue, Apr 19, 2022 at 12:50:38PM +0800, Shiyang Ruan wrote:
> >> This patchset is aimed to support shared pages tracking for fsdax.
> >
> > Now that this is largely reviewed, it's time to work out the
> > logistics of merging it.
>
> Thanks!
>
> >
> >> Changes since V12:
> >> - Rebased onto next-20220414
> >
> > What does this depend on that is in the linux-next kernel?
> >
> > i.e. can this be applied successfully to a v5.18-rc2 kernel without
> > needing to drag in any other patchsets/commits/trees?
>
> Firstly, I tried to apply to v5.18-rc2 but it failed.
>
> There are some changes in memory-failure.c, which besides my Patch-02
> "mm/hwpoison: fix race between hugetlb free/demotion and
> memory_failure_hugetlb()"
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=423228ce93c6a283132be38d442120c8e4cdb061
>
> Then, why it is on linux-next is: I was told[1] there is a better fix
> about "pgoff_address()" in linux-next:
> "mm: rmap: introduce pfn_mkclean_range() to cleans PTEs"
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=65c9605009f8317bb3983519874d755a0b2ca746
> so I rebased my patches to it and dropped one of mine.
>
> [1] https://lore.kernel.org/linux-xfs/YkPuooGD139Wpg1v@infradead.org/

From my perspective, once something has -mm dependencies it needs to
go through Andrew's tree, and if it's going through Andrew's tree I
think that means the reflink side of this needs to wait a cycle as
there is no stable point that the XFS tree could merge to build on top
of.

The last reviewed-by this wants before going through there is Naoya's
on the memory-failure.c changes.

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