XFS reflink trees updated for 4.9

XFS reflink trees updated for 4.9

[Darrick J. Wong]

Seeing as 4.8 is probably going out today, here's the latest for-4.9 branch:

https://github.com/djwong/linux/tree/for-dave-for-4.9-9
https://github.com/djwong/xfsprogs/tree/for-dave-for-4.9-9
https://github.com/djwong/xfstests/tree/djwong-devel

I've rolled up all the comment fixes that have come in this week.
Thanks to everyone who's reviewed the patches (Dave, Christoph, and
Brian come to mind)!

I've also sped up stale CoW staging extent recovery by stashing all
those records in the right side of the refcount btree per a suggestion
from Dave on Friday afternoon.  It was a relatively small change, so
I didn't bother holding off, and everything still passes the same
tests they did before, AFAICT.

---

Dave: the two xfs_repair patches I posted yesterday are for xfsprogs
4.8.  One fixes some garbled rmap code that crashed when we
overestimated the freespace btree space requirements in phase5, and
needs to go in before the release.  The second patch re-adds the lost
blocks to the freesp btree so we get rid of those "sorry, lost XXX
blocks" messages.  That one isn't so urgent.

--D

Re: XFS reflink trees updated for 4.9

[Darrick J. Wong]

On Sun, Oct 02, 2016 at 12:01:07PM -0700, Darrick J. Wong wrote:
> Seeing as 4.8 is probably going out today, here's the latest for-4.9 branch:
> 
> https://github.com/djwong/linux/tree/for-dave-for-4.9-9
> https://github.com/djwong/xfsprogs/tree/for-dave-for-4.9-9
> https://github.com/djwong/xfstests/tree/djwong-devel

Rebased against yesterday's for-next:

https://github.com/djwong/linux/tree/for-dave-for-4.9-10
https://github.com/djwong/xfsprogs/tree/for-dave-for-4.9-10

No code changes on my end, and seems to pass all the tests it did before.

--D

> 
> I've rolled up all the comment fixes that have come in this week.
> Thanks to everyone who's reviewed the patches (Dave, Christoph, and
> Brian come to mind)!
> 
> I've also sped up stale CoW staging extent recovery by stashing all
> those records in the right side of the refcount btree per a suggestion
> from Dave on Friday afternoon.  It was a relatively small change, so
> I didn't bother holding off, and everything still passes the same
> tests they did before, AFAICT.
> 
> ---
> 
> Dave: the two xfs_repair patches I posted yesterday are for xfsprogs
> 4.8.  One fixes some garbled rmap code that crashed when we
> overestimated the freespace btree space requirements in phase5, and
> needs to go in before the release.  The second patch re-adds the lost
> blocks to the freesp btree so we get rid of those "sorry, lost XXX
> blocks" messages.  That one isn't so urgent.
> 
> --D
> --
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Re: XFS reflink trees updated for 4.9

[Christoph Hellwig]

On Mon, Oct 03, 2016 at 10:21:23AM -0700, Darrick J. Wong wrote:
> On Sun, Oct 02, 2016 at 12:01:07PM -0700, Darrick J. Wong wrote:
> > Seeing as 4.8 is probably going out today, here's the latest for-4.9 branch:
> > 
> > https://github.com/djwong/linux/tree/for-dave-for-4.9-9
> > https://github.com/djwong/xfsprogs/tree/for-dave-for-4.9-9
> > https://github.com/djwong/xfstests/tree/djwong-devel
> 
> Rebased against yesterday's for-next:

Just when I finished testing the previous iteration, which went all
fine, btw.