Unmapped buffers: to be merged in several days

[Dag-Erling Smørgrav]

Konstantin Belousov <kostikbel at gmail.com> writes:
> The ahci(4) and md(4) is converted to accept unmapped BIO requests.
> Other drivers and geom classes get the compat mapped BIOs, the
> transient mapping is established by the geom down thread. The KVA
> for the transient maping the carved from the buffer map, up to 10%
> of which is repurposed to the transient bio KVA. The hope is that
> the rest of drivers and geom classes will be converted to accept
> unmapped i/o shortly, making the transient map unused.

Could you briefly summarize what needs to be done to convert a driver?

DES
-- 
Dag-Erling Smørgrav - des at des.no