[PATCH 1/2] xfs: drop dmapi hooks

[Eric Sandeen]

Christoph Hellwig wrote:
> Dmapi support was never merged upstream, but we still have a lot of hooks
> bloating XFS for it, all over the fast pathes of the filesystem.
> 
> This patch drops over 700 lines of dmapi overhead.  If we'll ever get HSM
> support in mainline at least the namespace events can be done much saner
> in the VFS instead of the individual filesystem, so it's not like this
> is much help for future work.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

yeah, probably about time.

There is a fair bit of dmapi crumbs left though:

[sandeen at sandeen xfs]$ grep -ri dmapi * | wc -l
63

so I think this patch can go further toward its goal...

-Eric