On Fri, Feb 08, 2019 at 09:43:52AM +0100, Christoph Hellwig wrote: > Agreed. Please don't change the FIEMAP uapi. If we need to check > for a request coming from bmap just defined an internal FIEMAP flag > as the last available flag in the flags word, and reject it when > it comes from userspace in fiemap. Based on the new thread you started it seems like this go lost. I think we are 99% done with the bmap through fiemap series, and it is just missing this internal flag to make progress. Let's finish this off before starting another big project in the area.