underlying vnode requires Giant.
- In vm_fault only acquire Giant if the underlying object has NEEDSGIANT
set.
- In vm_object_shadow inherit the NEEDSGIANT flag from the backing object.
perfect solution as the lower vm object can change at unpredictable times
if our lower vp happens to be on another unionfs, etc.
Submitted by: Oleg Sharoiko <os@rsu.ru>
export. This was happening anyway since this file manually sets DEBUG.
- Add a sysctl for the number of items on the worklist.
- Use a more canonical loop restart in softdep_fsync_mountdev, it saves
some code at the expense of a goto and makes me worry less about
modifying a variable that should be private to the TAILQ_FOREACH_SAFE
macro.
devstat_end_transaction is called from a fast interrupt. Presently
there is no way for mtx_assert to determine that we're not executing
in a real thread context.
Submitted by: jhusted@isilon.com
remove the whole disc treei structure. This allows one to specify the
disc trees created by a prior release build (under R/cdrom) as the
destination without destroying the contents. This better integrates
with release building and makes further automation easier.
MFC after: 2 days
the INDEX file is taken from the package source tree as defined by the
PKG_TREE variable. This change allows using the (possibly incomplete)
packages on pointyhat.
MFC after: 2 days
given is looked up in a table and no longer stored literally in the
header.
Submitted by: Divacky Roman <xdivac02@stud.fit.vutbr.cz
PR: 80499
MFC After: 1 month
as they have no connection with the expected MNT_* flags. This bug
was exposed 18 months ago when the assignments to f_flags in
vfs_syscalls.c were moved to before the VFS_STATFS() call. It was
fixed in the CSRG source 10 years ago, but we never picked up that
change.
PR: kern/80390
MFC after: 1 week
drop the check+initialization for a straight initialization. Also
assert that curthread will never be NULL just to be sure.
Discussed with: rwatson, peter
MFC after: 1 week
Have pmcstat(8) and pmccontrol(8) use these APIs.
Return PMC class-related constants (PMC widths and capabilities)
with the OP GETCPUINFO call leaving OP PMCINFO to return only the
dynamic information associated with a PMC (i.e., whether enabled,
owner pid, reload count etc.).
Allow pmc_read() (i.e., OPS PMCRW) on active self-attached PMCs to
get upto-date values from hardware since we can guarantee that the
hardware is running the correct PMC at the time of the call.
Bug fixes:
- (x86 class processors) Fix a bug that prevented an RDPMC
instruction from being recognized as permitted till after the
attached process had context switched out and back in again after
a pmc_start() call.
Tighten the rules for using RDPMC class instructions: a GETMSR
OP is now allowed only after an OP ATTACH has been done by the
PMC's owner to itself. OP GETMSR is not allowed for PMCs that
track descendants, for PMCs attached to processes other than
their owner processes.
- (P4/HTT processors only) Fix a bug that caused the MI and MD
layers to get out of sync. Add a new MD operation 'get_config()'
as part of this fix.
- Allow multiple system-mode PMCs at the same row-index but on
different CPUs to be allocated.
- Reject allocation of an administratively disabled PMC.
Misc. code cleanups and refactoring. Improve a few comments.
