- rather than embedding bufq_state in driver softc,
have a pointer to the former.
- move bufq related functions from kern/subr_disk.c to kern/subr_bufq.c.
- rename method to strategy for consistency.
- move some definitions which don't need to be exposed to the rest of kernel
from sys/bufq.h to sys/bufq_impl.h.
(is it better to move it to kern/ or somewhere?)
- fix some obvious breakage in dev/qbus/ts.c. (not tested)
allows the strategy routine to be called from interrupt context, fixes
PR kern/29775 by Juan RP.
Now that pool_get() is only called from thread context, change PR_NOWAIT to
PR_WAITOK. Fix PR kern/26272 by Juergen Hannken-Illjes.
OK'd by thorpej@
disk is still in use.
Not for everyday use, but we have to face eg USB flash drives being
unplugged at the wrong time, and this is a way to simulate this without
wearing out the connectors.
by which files (hmm...why can't I unmount that file system over
there). Currently this is just the device and inode number of the
file backing the vnd, but hopefully consing up full pathnames can be
done at some point.
- guard against synchronous I/O completion
- avoid race conditions
- use bgetvp/brelvp to properly maintain the vnode holdcount
and clean/dirty buffer lists.
greater flexibility in its use. Additionally, add support for "geometry
emulation". This allows the "geometry" of the "disk" to be specified
at config time, providing near-perfect emulation of disklabel-less floppies,
CD-ROMs, etc., including non-512-byte sectors. If a geometry is not
specified at config time, a default based on 1M cylinders will be used.
cube