ather remove the locking.

The only change outside of xfs_inactive is relaxing an assert in
xfs_itruncate_extents.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Rich Johnston <rjohnston@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

‡®