> As of Jan, something seems to have broken BUFQ_READPRIO -- unclear who
> did it or why, but it is very clear to me that it got broken. The
> old symptoms of lots of disk i/o locking out userland processes trying
> to read something have returned.

FWIW, I do _not_ have BUFQ_READPRIO in either of my kernels that this
manifests itself.