(really this time) fix pageout to swap and a couple of clustering cases.
This simplifies BUF_KERNPROC() so that it unconditionally reassigns the
lock owner rather than testing B_ASYNC and having the caller decide when
to do the reassign. At present this is required because some places use
B_CALL/b_iodone to free the buffers without B_ASYNC being set. Also,
vfs_cluster.c explicitly calls BUF_KERNPROC() when attaching the buffers
rather than the parent walking the cluster_head tailq.
Reviewed by: Kirk McKusick <mckusick@mckusick.com>
Correct race condition between caller and daemon.
Tripped-over-by: Zach Heilig <zach@uffdaonline.net>
Bernd Walter <ticso@cicely.de>
Niels Chr. Bank-Pedersen <ncbp@bank-pedersen.dk>
run quite reliably now. I've explicitly tagged them as /* XXX overkill? */
although one does actually check for VM_PROT_EXECUTE.
Based on a suggestion by: Dmitrij Tejblum <tejblum@arc.hq.cti.ru>
Zap symbols.raw and glue to make symbols.* - it's not used on the ELF-only
alpha kernel. Symbol sorting is dead-end anyway once libkvm uses the
in-kernel linker symbol lookup.
if LK_RECURSIVE is not set, as we will simply return that the
lock is busy and not actually deadlock. This allows processes
to use polling locks against buffers that they may already
hold exclusively locked.
can cause a biodone() from a disk interrupt to spin when the interrupt
code tries to grab the simplelock. Masking BIO here means buftimelock
and/or lk->lk_interlock shouldn't be held when an interrupt tries to grab
them.
lockmgr locks. This commit should be functionally equivalent to the old
semantics. That is, all buffer locking is done with LK_EXCLUSIVE
requests. Changes to take advantage of LK_SHARED and LK_RECURSIVE will
be done in future commits.
exit on errors.
If we don't, in_pcbrehash() is called without a preceeding
in_pcbinshash(), causing a crash.
There are apparently several conditions that could cause the crash;
PR misc/12256 is only one of these.
PR: misc/12256
The attached diff attempts to eliminate as much of the difference
between the i386 and the pc98 version of the file as possible. It
should not make any semantic difference (it consists of whitespace
changes, order changes, comment changes, changes of case for hex
constants, and merging in a couple of constants that hadn't made it
from the i386 version.)
Submitted by: eivind
This caused a panic in rtfreee() called with a root node from the
routing socket code (when processing a RTM_GET message looking for
the default route while there is none).
Since no existing code seems to have any use getting the root node
from rn_match(), it seems cleaner never to return it rather than
check for this condition at the caller's.
PR: kern/12265
The atapi subsystem has gotten better error handeling and timeouts,
it also tries a REQUEST SENSE command when devices returns errors,
to give a little more info as to what went wrong. It might be a
little verbose for now, but I'm interested in as much feedback on
errors as possible, especially timeouts, as I'm a bit in doubt if
I've chosen resonable default values everywhere.
The disk driver has been changed a bit to prepare for tagged queing,
which is next on my list.
The disk driver has grown a dump routine, I got one implementation
from Darrell Anderson <anderson@cs.duke.edu> which also did
partial dumps (usefull on big memory machines) I left out the
partial stuff for now, and changed the rest alot to fit into the new
ad_request framework.
Some minor cleanups and rearrangements as well.
As usual USE AT YOUR OWN RISK!!, this is still pre alpha level code.
Especially the DMA support can hose your disk real bad if anything
goes wrong, again you have been warned :)
Notebook owners should be carefull that their machines dont suspend
as this might cause trouble...
But please tell me how it works for you!
Enjoy!
-Søren
and insertion should affect the line the cursor is on only.
This change should have been committed together with syscons.c rev 1.308.
(I forgot to do so, when I committed syscons.c :-(
Pointed out by: sos
If the drive goes down, queue a close to the daemon. In many cases
this function gets called in process context, so it could do it
directly, but it's more trouble finding out where we came from than
getting the daemon to do it.
Don't bzero the buffer structure, it's been done already by
allocrqg.
sdio:
Build up a correct buffer header, don't steal linkages from system
buffer headers.
Noticed-by: mckusick
1. Rise is recognized in identdcpu.c.
2. The TSC is not written to. A workaround for the CPU bug is being
applied to clock.c (the bug being that the mP6 has TSC enabled
in its CPUID-capabilities, but it only supports reading it. If we
try to write to it (MSR 16), a GPF occurs.) The new behavior is that
FreeBSD will _not_ zero the TSC. Instead, we do a bit of 64-bit
arithmetic.
Reviewed by: msmith
Obtained from: unfurl & msmith
wfd driver code tries to give wd driver first crack at ioctl's,
but incorrectly interprets internal error and never gets to send
eject to ATAPI device.
(this is fixed in the atapi-fd driver)
PR: kern/12218
Submitted by: Simon Walton <simonw@cinesite.com>
