Hi,
while looking for something else, I also noticed this comment
in uvm_vnode.c:

/*
 * NOTE: currently we have to use VOP_READ/VOP_WRITE because they go
 * through the buffer cache and allow I/O in any size.  These VOPs use
 * synchronous i/o.  [vs. VOP_STRATEGY which can be async, but doesn't
 * go through the buffer cache or allow I/O sizes larger than a
 * block].  we will eventually want to change this.
 *

Does it still hold with UBC or the comment should be updated ?

Jaromir
--
Jaromir Dolecek <jdolecek@NetBSD.org>      http://www.ics.muni.cz/~dolecek/
@@@@  Wanna a real operating system ? Go and get NetBSD, dammit!  @@@@