for ensuring that a process' filedesc is not shared with anybody.
Use it in the two places which previously had private implmentations.
This collects all fd_refcnt handling in kern_descrip.c
to better keep track of the total amoutn transferred during a
transfer. Seems similar to some code in the NetBSD version.
I notice they have incorporated matches from him so I don't know which
direction it went.
Submitted by: damien.bergamini@free.fr
Obtained from: patches to make the ueagle driver work
MFC after: 1 week
You could turn this off by debug.mpsafenet=0 for full network
stack or via debug.{cp|cx|ctau}.mpsafenet for cp(4), cx(4) and
ctau(4) accordingly.
MFC after: 10 days
nice value above 0, set it to 0 so that it may proceed with haste.
This is especially important on ULE, where adjusting the priority
does not guarantee that a thread will be granted a greater time slice.
Now only things that are different between us and NetBSD show up.
Means that these files are more of NetBSD style in some places but
since thay are NetBSD files, um, that's ok.
Obtained from: NetBSD
MFC after: 1 week
do things correctly from an aliasing perspective. Put the
vop_generic_args element as the first element for all the vop_*_args
and adjust the code to take the address of that instead of the
structure.
OK'd based on a vague description by: phk
specifically, vm_pgmoveco():
1. If vm_pgmoveco() sleeps on a busy page, it must redo the look up
because the page may have been freed.
2. If the receive buffer is copy-on-write due to, for example, a fork,
then although the first vm object in the shadow chain may not contain
a page there may still be one from a backing object that is mapped.
Thus, a pmap_remove() is required for the new page rather than the
backing object's page to been seen by the application.
Also, add some comments to vm_pgmoveco() and update some assertions.
Tested by: ken@
pointer to eliminate the hundreds of warnings that we have in tree at
the moment.
# Chances are good that all the struct vop_*_args should have, as its
# first element, the struct vop_generic_args, and when necessary to
# reference it, we just take its address rather than going through
# this double case.
the ISA and CBUS (called isa on pc98) attachments. Eliminate all PC98
ifdefs in the process (the driver in pc98/pc98/mse.c was a copy of the one
in i386/isa/mse.c with PC98 ifdefs). Create a module for this driver.
I've tested this my PC-9821RaS40 with moused. I've not tested this on i386
because I have no InPort cards, or similar such things. NEC standardized
on bus mice very early, long before ps/2 mice ports apeared, so all PC-98
machines supported by FreeBSD/pc98 have bus mice, I believe.
Reviewed by: nyan-san
"vm_fault: fault on nofault entry, addr: %lx" panic. The problem was a
stale PTE in the TLB that marked the page as not present, even though
we had a good PTE in the VHPT. We typically don't yet insert PTEs in
the TLB. We do that lazily. The CPU will look for the PTE in the VHPT
when there's no PTE in the TLB. Unfortunately this doesn't handle the
case of the stale PTE in the TLB. The quick fix is to invalidate the
TLB (sloppily) when the VHPT doesn't contain a valid PTE. This is also
the only case that may cause a PTE in the TLB that marks a page as
non-present.
four different locations on a prospective filesystem.
If we found none, we forgot to invalidate the four buffers, thus the
following sequence would fails:
(md0 = blank disk)
mount /dev/md0 /mnt
(fails, no superblocks)
newfs /dev/md0
(writes using physio which does not go through buffercache).
mount /dev/md0 /mnt
(still fails, the four cached buffers still contain no superblocks)
Found by: ru
