@Gyrogy : Can you please share your comments on this patch and if possible consider for merging 
 
This is part of changes i am backporting to have https://git.openembedded.org/meta-openembedded/commit/meta-oe/classes/image_types_sparse.bbclass?id=f5246b7df447ac76ec04c6e5add398862d1c9ccd 
in kirkstone also 
 
- Thanks 
Ashish