Hi All,

Here is the latest patch. Still not cleaned up - but I thought I would
get more feedback & testing while I finish cleanups (since they are all
cosmetic).

TODO:
	- Change the naming to MADV_FREE (as Andrew suggested)
	- Merge shmem_truncate_range() with shmem_truncate()
	- Disallow VMA_NONLINEAR, HUGETLB etc.
	- Take a closer look at i_sem & i_alloc_sem. 
	- comments, white space, tab cleanups.
	- Drop truncate_inode_pages_range() changes - since they
	  are already in -mm tree.

Thanks,
Badari