Revert "[XFS] remove old vmap cache"

This reverts commit d2859751cd0bf586941ffa7308635a293f943c17.

This commit caused regression. We'll try to fix use of new
vmap API for next release.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
1 file changed