Currently, the implementation for the conversion of tier_dev_info into tier_bg_info which will be used by the ext4_block_allocator.
Some new data structures will also be introduced. Through this BUG we also intend to implement the tier usage information of a tier-to-tier basis.
This would require export ext4_get_group_info(...);
Any other better way to get this information ???
This will also add dependency to ext4...
As far the dependency is concerned thats acceptable in my opinion but exporting a function is what I am not liking much.....