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21144e3bf1
freebsd-skq/sys
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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
..
alpha Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
amd64 Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
boot Sync with sys/boot/i386/libi386/biosdisk.c revision 1.27 and 1.28. 2000-03-17 12:38:36 +00:00
cam Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
coda Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
compat Fix some style bugs. The long line is in a chunk of code that's 2000-03-13 15:27:19 +00:00
compile
conf Argh, fix cut/paste mistake. This contributed to LINT not building. 2000-03-20 10:17:13 +00:00
contrib Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
crypto Prototype fix for IPsec authentication related functions 2000-02-10 19:35:53 +00:00
ddb Add a new sysctl "debug.enter_debugger" (when the kernel is compiled 2000-01-27 22:27:34 +00:00
dev Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
fs Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
geom Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
gnu Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
i4b Fix a problem which caused i/o resource allocation conflict of this 2000-03-09 20:57:47 +00:00
i386 Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
isa Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
isofs/cd9660 remove check now done in vn_isdisk(). 2000-01-10 12:24:36 +00:00
kern Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
libkern Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
miscfs Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
modules Define PC98 when MACHINE == pc98, because msdos_vfsops.c contains 2000-03-19 15:06:18 +00:00
msdosfs Supported non-512 bytes/sector format. 2000-01-27 14:43:07 +00:00
net o Replace most magic numbers related to token ring with #defines 2000-03-19 21:34:39 +00:00
netatalk Clean up some loose ends in the network code, including the X.25 and ISO 2000-02-13 03:32:07 +00:00
netatm Clean up some loose ends in the network code, including the X.25 and ISO 2000-02-13 03:32:07 +00:00
netgraph Newer ciscos have become more picky, and will not accept the MULTICAST bit 2000-03-17 17:06:33 +00:00
netinet o Replace most magic numbers related to token ring with #defines 2000-03-19 21:34:39 +00:00
netinet6 Backout the previous change to __KAME_VERSION (FreeBSD4.x addition), 2000-03-13 10:07:30 +00:00
netipx Clean up some loose ends in the network code, including the X.25 and ISO 2000-02-13 03:32:07 +00:00
netkey comment the string after #endif 2000-01-15 05:15:06 +00:00
netnatm Clean up some loose ends in the network code, including the X.25 and ISO 2000-02-13 03:32:07 +00:00
netncp Enable '=' character in the filename. 2000-01-29 02:10:37 +00:00
netns Clean up some loose ends in the network code, including the X.25 and ISO 2000-02-13 03:32:07 +00:00
nfs Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
nfsclient Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
nfsserver Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
ntfs Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
nwfs Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
pc98 Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
pccard Add support for PnP ISA cards, and some laptop PnP support: 2000-03-10 05:43:29 +00:00
pci A fairly simple newbusification of if_de 2000-03-20 09:18:46 +00:00
posix4 Track libc_r addition of semaphores implementation. 2000-01-20 07:55:42 +00:00
powerpc Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
rpc $Id$ -> $FreeBSD$ 1999-08-27 23:45:13 +00:00
svr4 Fix handling of svr4_sigsets, which are implemented in SysVR4 as a sequence 2000-01-15 15:38:17 +00:00
sys Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
tools Use a seperate -c and -h mode. The vnode_if.c file is compiled only into 1999-12-12 16:43:05 +00:00
ufs Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
vm Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new 2000-03-20 10:44:49 +00:00
Makefile Remove the old a.out-only boot loader, we don't use it any more. 2000-03-19 11:42:34 +00:00