d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
29f88f470e
freebsd-skq/sys
History
Poul-Henning Kamp 29f88f470e Comment out Kirks io-request priority hack until we can do this in a 
civilized way which doesn't cause grief.

The problem is that it is not generally safe to cast a "struct bio
*" to a "struct buf *".  Things like ccd, vinum, ata-raid and GEOM
constructs bio's which are not entrails of a struct buf.

Also, curthread may or may not have anything to do with the I/O request
at hand.

The correct solution can either be to tag struct bio's with a
priority derived from the requesting threads nice and have disksort
act on this field, this wouldn't address the "silly-seek syndrome"
where two equal processes bang the diskheads from one edge to the
other of the disk repeatedly.

Alternatively, and probably better: a sleep should be introduced
either at the time the I/O is requested or at the time it is completed
where we can be sure to sleep in the right thread.

The sleep also needs to be in constant timeunits, 1/hz can be practicaly
any sub-second size, at high HZ the current code practically doesn't
do anything.
2002-04-22 06:53:20 +00:00
..
alpha Since WITNESS doesn't just do mutexes, remove "mutex" from the WITNESS 2002-04-18 03:44:44 +00:00
amd64 Stylify (mainly line up macro EOL-continuation \'s), and add a dummy 2002-04-21 10:49:00 +00:00
arm Guard against redefining __gnuc_va_list. 2002-03-24 11:25:46 +00:00
boot Improve self-relocation: 2002-04-21 08:49:47 +00:00
cam Fix 3 of the four problems with my last indentation fix. ("fixing" the 2002-04-01 05:41:33 +00:00
coda Don't put a line break in string literals. GCC 3.1 complains and GCC 2002-04-20 01:42:56 +00:00
compat Add an XXX: linux_uselib() should be using vn_open() rather than invoking 2002-04-20 14:43:34 +00:00
conf Reenable the newly unbroken hfa device. 2002-04-20 19:44:38 +00:00
contrib We don't need ip_ipsec_pxy.c in userland. 2002-03-26 13:42:09 +00:00
crypto Remove macros that are defined elsewhere. 2002-04-21 10:32:48 +00:00
ddb Commented out locking that would be used in the ps command if locks were 2002-04-11 21:01:34 +00:00
dev Fix really dumb braino of mine; cast a sizeof() to an int, which it is 2002-04-21 11:02:36 +00:00
fs Don't attempt to decvlare M_DEVFS whern MALLOC_DECLARE is not defined. 2002-04-21 15:47:03 +00:00
geom Make kernel dumps work with GEOM. 2002-04-19 09:24:12 +00:00
gnu Change callers of mtx_init() to pass in an appropriate lock type name. In 2002-04-04 21:03:38 +00:00
i4b Change callers of mtx_init() to pass in an appropriate lock type name. In 2002-04-04 21:03:38 +00:00
i386 Stylify (mainly line up macro EOL-continuation \'s), and add a dummy 2002-04-21 10:49:00 +00:00
ia64 Add ia64_sal_init_state(). This function will initialize the machine 2002-04-22 06:43:31 +00:00
isa GC various bits and pieces of USERCONFIG from all over the place. 2002-04-09 11:18:46 +00:00
isofs/cd9660 Change callers of mtx_init() to pass in an appropriate lock type name. In 2002-04-04 21:03:38 +00:00
kern Comment out Kirks io-request priority hack until we can do this in a 2002-04-22 06:53:20 +00:00
libkern Remove bogus include of <machine/ansi.h>. 2002-04-11 06:53:40 +00:00
modules Move tx(4) driver to sys/dev/tx. BTW split hardware structures and constants 2002-04-19 22:43:57 +00:00
net just merged cosmetic changes from KAME to ease sync between KAME and FreeBSD. 2002-04-19 04:46:24 +00:00
netatalk Change callers of mtx_init() to pass in an appropriate lock type name. In 2002-04-04 21:03:38 +00:00
netatm - Change the atm_attributes_pool and atm_stackq_pool to be uma_zone's 2002-04-22 05:11:44 +00:00
netgraph Use 'struct callout' instead of 'struct callout_handle' to avoid 2002-04-14 17:37:35 +00:00
netinet Add sa_family_t type to <sys/_types.h> and typedefs to <netinet/in.h> 2002-04-20 02:24:35 +00:00
netinet6 just merged cosmetic changes from KAME to ease sync between KAME and FreeBSD. 2002-04-19 04:46:24 +00:00
netipx Change callers of mtx_init() to pass in an appropriate lock type name. In 2002-04-04 21:03:38 +00:00
netkey just merged cosmetic changes from KAME to ease sync between KAME and FreeBSD. 2002-04-19 04:46:24 +00:00
netnatm Change callers of mtx_init() to pass in an appropriate lock type name. In 2002-04-04 21:03:38 +00:00
netncp Add character translation table between Unix and NetWare according 2002-04-20 05:35:02 +00:00
netns Change callers of mtx_init() to pass in an appropriate lock type name. In 2002-04-04 21:03:38 +00:00
netsmb Recongnize more error codes returned by W2K servers. 2002-04-17 03:14:28 +00:00
nfs Remove unused include. 2002-03-20 10:12:07 +00:00
nfsclient The recent NFS forced unmount improvements introduced a side-effect 2002-04-17 01:07:29 +00:00
nfsserver Limit to the maximum allowed reply size the amount of data that 2002-04-21 16:14:54 +00:00
pc98 Rework the kernel environment subsystem. We now convert the static 2002-04-17 13:06:36 +00:00
pccard Change the suser() API to take advantage of td_ucred as well as do a 2002-04-01 21:31:13 +00:00
pci Move tx(4) driver to sys/dev/tx. BTW split hardware structures and constants 2002-04-19 22:43:57 +00:00
posix4 Remove __P. 2002-03-19 22:20:14 +00:00
powerpc Replace inline asm with it's inline function wrapper. 2002-04-20 10:06:22 +00:00
rpc
security/lomac Use the proc lock to protect p_ucred while we read a few items from it. 2002-04-11 21:17:45 +00:00
sparc64 Avoid using pmap_kenter "early", since it may need to dink with vm_page 2002-04-21 22:57:42 +00:00
svr4
sys Wrap GCC-specific stuff and provide alternative for lint. 2002-04-21 11:11:02 +00:00
tools constify 2002-04-01 19:22:04 +00:00
ufs Remove support for using soon to be retired "special" poll(2) ops. 2002-04-18 14:52:28 +00:00
vm Reintroduce locking on accesses to vm_object_list. 2002-04-20 07:23:22 +00:00
Makefile