Re: [PATCH 002/119] vfs: support FS_XFLAG_REFLINK and FS_XFLAG_COWEXTSIZE

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On Fri, Jun 17, 2016 at 08:16:05AM -0400, Brian Foster wrote:
> On Fri, Jun 17, 2016 at 04:41:17AM -0700, Christoph Hellwig wrote:
> > On Thu, Jun 16, 2016 at 06:18:05PM -0700, Darrick J. Wong wrote:
> > > Introduce XFLAGs for the new XFS reflink inode flag and the CoW extent
> > > size hint, and actually plumb the CoW extent size hint into the fsxattr
> > > structure.
> > > 
> > > Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> > 
> > Should go behind all the updates that are useful without any new
> > rmap or reflink functionality.  In fact it would be great if you
> > could send out a series with just those little fixes and cleanups
> > first.
> > 
> 
> I'd take that a step further and suggest the entire series be split into
> independent feature series, as appropriate. Unless I'm missing
> something, I don't think there's any reason these all need to be bundled
> together. Further, my expectation is that they probably end up being
> merged as independent units, so I think it's easier for everybody for
> Darrick to carve that up on the logical boundaries rather than assume
> all reviewers and maintainer are going to do so consistently.
> 
> Note that I'm not saying this has to be reposted.. I think I can pull
> off the rmap bits for the time being. I'm just suggesting that if a
> repost is required from this point forward for any of the logical
> subunits (deps, rmap, reflink, scrub), I'd suggest to post, version and
> changelog those units independently.

I'd thought about continuing my old practice of listing which patches
go with which feature... but then got lazy. :(  Cleanups/rmap/reflink/scrub
actually are in their own contiguous sections of the patchbomb, though that
isn't obvious from looking at it.

You ought to be able to pull only as far as the end of the rmap series and
still have a working XFS.  I only did the intensive testing with the full
patchset, but the quick xfstests group ran fine with just the rmap pieces.

Kernel patches:
===============
Cleanups, 1-11
rmap + dependencies, 12-49
    Overlapped interval btree, 12-15
    Deferred operations, 16-22
    rmap, 23-49
reflink + dependencies, 50-111
    AG reservations, 50-52
    refcount btree, 53-68
    deferred remap, 69-73
    cow, 74-88
    reflink, 89-111
getfsmapx, 112
scrub, 113-119

xfsprogs:
=========
Cleanups, 1-15
rmap + deps, 16-70
    Overlapped interval btree, 16-19
    Deferred operations, 20-27
    rmap, 28-70
reflink + dependencies, 71-135
    AG reservations, 71-72
    refcount btree, 73-85
    deferred remap, 86-90
    reflink, 91-135
getfsmapx, 136-138
scrub, 139-145

--D

> 
> Brian
> 
> > _______________________________________________
> > xfs mailing list
> > xfs@xxxxxxxxxxx
> > http://oss.sgi.com/mailman/listinfo/xfs

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