reference while we were getting the v_interlock.
vget(): attempt prevent it from returning a clean vnode:
if the vnode is being inactivated (by vrelel()), wait for
vrelel() to complete (or return EBUSY if we can't wait), and return
ENOENT if the vnode has been vclean'ed by vrelel()
Fix kern/41147 in a better way, hopefully fix other related race conditions.
of transitions to IPL_HIGH from lower IPLs. SPLDEBUG is only available
on i386 and Xen kernels, today.
'options SPLDEBUG' adds instrumentation to spllower() and splraise() as
well as routines to start/stop debugging and to record IPL transitions:
spldebug_start(), spldebug_stop(), spldebug_raise(), spldebug_lower().
meta-data of this pool takes more space than the actual data..
- Reduce lowat/hiwat to 1..8, since intensity is very low.
- Remove unused pew_next_free from pmf_event_workitem_t.
- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.
Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).
Discussed on <tech-kern>, reviewed by <ad>.
early during boot, just after CPUs are attached but before they are marked
as running.
This will result in a list of CPUs without the SPCF_RUNNING flag set, and
will trigger the 'KASSERT(xc_tailp < xc_headp)' in xc_lowpri() as no cross
call is issued.
Bug reported and patch tested by tron@.
See also http://mail-index.netbsd.org/tech-kern/2009/10/19/msg006293.html
from usr.sbin/mopd/common/pf.c, where only the ad clause is removed,
because it has a shared UCB copyright) on Mats O Jansson's files.
thorpej OK'd usr.sbin/rpc.yppasswdd/yppasswdd_mkpw.c, where he shares
copyright.
Most times we've come through spec_read() which has already done the test,
but not always (eg pty with ptsfs mounted).
Without this there is a simple local-user panic in ureadc().
Noted Matthew Mondor on tech-kern.
that can't happen as early as the other init functions as called from
cpu_startup() -- for example, register kauth(9) listeners.
Put unprivileged policy in the x86 code; used by i386, amd64, and xen.
but access control) user mounting policies: enforced MNT_NOSUID and
MNT_NODEV, no MNT_EXPORT, MNT_EXEC propagation. This can be useful for
secmodels that are interested in simply adding finer grained user mount
support.
- Add a mount subsystem listener for KAUTH_REQ_SYSTEM_MOUNT_GET.
really belongs (suggested by rmind@),
- Rename sched_init() to synch_init(), and introduce a new sched_init()
in sys_sched.c where we (a) initialize the sysctl node (no more
link-set) and (b) listen on the process scope with sched_listener.
Reviewed by and okay rmind@.
close to it). Useful for secmodels.
Replace open-coded form with it in secmodel code (securelevel, keylock).
Note: I need to find a way to make secmodel_keylock.c ~<100 lines.
bouyer