freebsd-dev/sys/dev/amr
Poul-Henning Kamp 21144e3bf1 Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new
field in struct buf: b_iocmd.  The b_iocmd is enforced to have
exactly one bit set.

B_WRITE was bogusly defined as zero giving rise to obvious coding
mistakes.

Also eliminate the redundant struct buf flag B_CALL, it can just
as efficiently be done by comparing b_iodone to NULL.

Should you get a panic or drop into the debugger, complaining about
"b_iocmd", don't continue.  It is likely to write on your disk
where it should have been reading.

This change is a step in the direction towards a stackable BIO capability.

A lot of this patch were machine generated (Thanks to style(9) compliance!)

Vinum users:  Greg has not had time to test this yet, be careful.
2000-03-20 10:44:49 +00:00
..
amr_disk.c Revamp the devstat priority system. All disks now have the same priority. 1999-12-08 04:45:23 +00:00
amr_pci.c
amr.c Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
amrio.h Don't print the chipset value; it's not useful. 1999-11-02 03:24:09 +00:00
amrreg.h
amrvar.h Change the queueing model used by the controller to drastically reduce 1999-10-26 23:18:57 +00:00