On Mon, Aug 26, 2024 at 10:44:24PM -0700, Darrick J. Wong wrote: > Maybe we should rename it then? > > IOMAP_F_OUT_OF_PLACE_WRITE. > > Yuck. > > IOMAP_F_ELSEWHERE > > Not much better. Maybe just add a comment that "IOMAP_F_SHARED" really > just means an out of place write (aka srcmap is not just a hole). Heh. For writes it usually means out of place write, but for reporting it gets translated to the FIEMAP_EXTENT_SHARED flag or is used to reject swapon. And the there is black magic in DAX.