Linux has had this nifty feature since Kernel 2.6 known as GPUDirect, which is essentially the equivalent of DirectStorage on Linux.
The marketing hype around DirectStorage suggests that it's a fresh Windows feature, but in reality, it's just a substantial fix aimed at tackling the sluggish IO performance on Windows due to the design flaws.
https://heterodb.github.io/pg-strom/ssd2gpu/
It remains to be seen if Wine can hook DirectStorage into GPUDirect.