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@xxxxxxxxxxxxx/
What are your plans for the followup patches that enable
reflink+fsdax in XFS? AFAICT that patchset hasn't been posted for
while so I don't know what it's status is. Is that patchset anywhere
near ready for merge in this cycle?
If that patchset is not a candidate for this cycle, then it largely
doesn't matter what tree this is merged through as there shouldn't
be any major XFS or dax dependencies being built on top of it during
this cycle. The filesystem side changes are isolated and won't
conflict with other work in XFS, either, so this could easily go
through Dan's tree.
However, if the reflink enablement is ready to go, then this all
needs to be in the XFS tree so that we can run it through filesystem
level DAX+reflink testing. That will mean we need this in a stable
shared topic branch and tighter co-ordination between the trees.
So before we go any further we need to know if the dax+reflink
enablement patchset is near being ready to merge....
The "reflink+fsdax" patchset is here:
https://lore.kernel.org/linux-xfs/20210928062311.4012070-1-ruansy.fnst@xxxxxxxxxxx/
It was based on v5.15-rc3, I think I should do a rebase.
--
Thanks,
Ruan.
Cheers,
Dave.
