PMEM, DAX, MTD, and the quest for the Theory of Everything

[Nicolas Pitre]

On Tue, 26 Jan 2016, Wilcox, Matthew R wrote:

> No, we haven't been considering the MTD code at all with DAX.  We leapt onto the S/390 filemap_xip code, and took it for a wild ride.  I did look at the MTD code a bit, but that was two or more years ago.  I vaguely remember thinking that it could be made to support DAX, but it really wasn't (and isn't) my focus.
> 
> I don't think I'd be terribly upset by the appearance of patches which 
> made DAX sit on top of an MTD device instead of a block device, but I 
> don't have a good feel for where embedded systems are these days.  Is 
> it still worth configuring out the block subsystem?

Where cost saving is the ultimate goal and consequently memory footprint 
reduction is a requirement then yes configuring out the block layer is a 
popular option.


Nicolas