Re: [PATCHSETS] v14 fsdax-rmap + v11 fsdax-reflink

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On Tue, May 10, 2022 at 06:55:50PM -0700, Dan Williams wrote:
> [ add Andrew ]
> 
> 
> On Tue, May 10, 2022 at 6:49 PM Dave Chinner <david@xxxxxxxxxxxxx> wrote:
> >
> > On Tue, May 10, 2022 at 05:03:52PM -0700, Darrick J. Wong wrote:
> > > On Sun, May 08, 2022 at 10:36:06PM +0800, Shiyang Ruan wrote:
> > > > This is a combination of two patchsets:
> > > >  1.fsdax-rmap: https://lore.kernel.org/linux-xfs/20220419045045.1664996-1-ruansy.fnst@xxxxxxxxxxx/
> > > >  2.fsdax-reflink: https://lore.kernel.org/linux-xfs/20210928062311.4012070-1-ruansy.fnst@xxxxxxxxxxx/
> > > >
> > > >  Changes since v13 of fsdax-rmap:
> > > >   1. Fixed mistakes during rebasing code to latest next-
> > > >   2. Rebased to next-20220504
> > > >
> > > >  Changes since v10 of fsdax-reflink:
> > > >   1. Rebased to next-20220504 and fsdax-rmap
> > > >   2. Dropped a needless cleanup patch: 'fsdax: Convert dax_iomap_zero to
> > > >       iter model'
> > > >   3. Fixed many conflicts during rebasing
> > > >   4. Fixed a dedupe bug in Patch 05: the actuall length to compare could be
> > > >       shorter than smap->length or dmap->length.
> > > >   PS: There are many changes during rebasing.  I think it's better to
> > > >       review again.
> > > >
> > > > ==
> > > > Shiyang Ruan (14):
> > > >   fsdax-rmap:
> > > >     dax: Introduce holder for dax_device
> > > >     mm: factor helpers for memory_failure_dev_pagemap
> > > >     pagemap,pmem: Introduce ->memory_failure()
> > > >     fsdax: Introduce dax_lock_mapping_entry()
> > > >     mm: Introduce mf_dax_kill_procs() for fsdax case
> > >
> > > Hmm.  This patchset touches at least the dax, pagecache, and xfs
> > > subsystems.  Assuming it's too late for 5.19, how should we stage this
> > > for 5.20?
> >
> > Yeah, it's past my "last date for this merge cycle" which was
> > -rc6. I expected stuff might slip a little - as it has with the LARP
> > code - but I don't have the time and bandwidth to start working
> > on merging another feature from scratch before the merge window
> > comes around.
> >
> > Getting the dax+reflink stuff in this cycle was always an optimistic
> > stretch, but I wanted to try so that there was no doubt it would be
> > ready for merge in the next cycle...
> >
> > > I could just add the entire series to iomap-5.20-merge and base the
> > > xfs-5.20-merge off of that?  But I'm not sure what else might be landing
> > > in the other subsystems, so I'm open to input.
> >
> > It'll need to be a stable branch somewhere, but I don't think it
> > really matters where al long as it's merged into the xfs for-next
> > tree so it gets filesystem test coverage...
> 
> So how about let the notify_failure() bits go through -mm this cycle,
> if Andrew will have it, and then the reflnk work has a clean v5.19-rc1
> baseline to build from?

Sure, if you want to push them that way I'm not going to complain
or stop you. :)

Anything that makes the eventual XFS feature merge simpler counts as
a win in my books.

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx



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