negative return value from write to update its position in
a buffer. The patch, courtesy of Andrey Simonenko, also simplifies
a conditional by removing the "i != cnt" clause, since it is
always true at this point in the code. The bug caused problems
for mountd, when it generated a large reply to an exports RPC
request.
Submitted by: simon at comsys.ntu-kpi.kiev.ua
MFC after: 2 weeks
- Keep a hash of indirect blocks that have recently been freed and are
still referenced in the journal.
- Lookup blocks in this hash before forcing a new block write to wait on
the journal entry to hit the disk. This is only necessary to avoid
confusion between old identities as indirects and new identities as
file blocks.
- Don't free jseg structures until the journal has written a record that
invalidates it. This keeps the indirect block information around for
as long as is required to be safe.
- Force an empty journal block write when required to flush out stale
journal data that is simply waiting for the oldest valid sequence
number to advance beyond it.
used for NFSv4 restart. This permits the nfsd to create
the stable restart file as required and minimizes the risk
of trouble if the file is lost.
Suggested by: Tim Kientzle
Reviewed by: jhb
MFC after: 2 weeks
VOP_LOOKUP() returned. This fixes a bug in the experimental
NFS server for the case where VFS_VGET() fails returning EOPNOTSUPP
in the ReaddirPlus RPC, forcing the use of VOP_LOOKUP() instead.
MFC after: 2 weeks
workaround for fdescfs to not panic when ncookies is not NULL, similar
to the one committed as r152254, but simpler, due to fdescfs_readdir()
not calling vfs_read_dirent().
PR: kern/156177
MFC after: 1 week
does. The rc.local wrapper script will also soon grow an option to use the
live environment after installation, so an immediate reboot isn't even
necessarily implied.
working. We store v4 and v6 addresses as a union but for v4-mapped
addresses only store the 32bits w/o the ::ffff: word. That failed the
check as for example 127.0.0.1 would be ::7f00:1 rather than ::ffff:7f00:1
and the IN6_IS_ADDR_V4MAPPED() never worked here. Given we can hardly get
here with an unbound local address or invalid inp_vflags remove the check.
Reported by: tuexen
Reviewed by: tuexen
MFC after: 3 days
some more. Similar to what we do for TCP check for v4-mapped
addresses and then handle them or the normal v6 address case.
For either set inp_vflags before calling into the pcb connect
function so that we have an unambiguous view in case we need to
set the local address or port.
Looked at: tuexen (as part of more)
MFC after: 3 days
update_gdt_{f,g}sbase. The functions set the flag when td == curthread,
and sysarch is always called with curthread.
Reviewed by: jhb, jkim
MFC after: 1 week
Thread might be preempted after testing, which causes the flag to be
cleared. If ast was not delivered, we will do sysret with potentially
wrong fs/gs bases.
Reviewed by: jhb, jkim
MFC after: 1 week (together with r220430, r220452)
for a detailed explanation of the problems).
The only difference with the previous fix is in Solution2:
CPUBLOCK is no longer set when exiting from callout_reset_*() functions,
which avoid the deadlock (leading to r217161).
There is no need to CPUBLOCK there because the running-and-migrating
assumption is strong enough to avoid problems there.
Furthermore add a better !SMP compliancy (leading to shrinked code and
structures) and facility macros/functions.
Tested by: gianni, pho, dim
MFC after: 3 weeks
on per-device basis.
- While adding support for per-device sysctls, merge from graid branch
support for ADA_TEST_FAILURE kernel option, which opens few more sysctl,
allowing to simulate read and write errors for testing purposes.
return. The ast() function may cause a context switch in which case
PCB_FULL_IRET would be set in the pcb. However, the code was not
rechecking the flag after ast() returned and would not properly restore
the FSBASE and GSBASE MSRs. To fix, recheck the PCB_FULL_IRET flag after
ast() returns.
While here, trim an instruction (and memory access) from the doreti path
and fix a typo in a comment.
MFC after: 1 week
should also be forwarded to the remote logging host, not only when the
logging is done locally.
PR: bin/154324
Submitted by: Callum Gibson <callumgibson@optusnet.com.au>
MFC after: 1 week
This introduces struct ieee80211_rx_stats - which stores the various kinds
of RX statistics which a MIMO and non-MIMO 802.11 device can export.
It also fleshes out the mimo export to userland (node_getmimoinfo()).
It assumes that MIMO radios (for now) export both ctl and ext channels.
Non-11n MIMO radios are possible (and I believe Atheros made at least
one), so if that chipset support is added, extra flags to the
struct ieee80211_rx_stats can be added to extend this support.
Two new input functions have been added - ieee80211_input_mimo() and
ieee80211_input_mimo_all() - which MIMO-aware devices can call with
MIMO specific statistics.
802.11 devices calling the non-MIMO input functions will still function.
ctl/ext noise floor values.
This routine doesn't check to see whether the radio is MIMO
capable - instead, it simply returns either the raw values,
the "nominal" values if the raw values aren't yet available
or are invalid, or '0' values if there's no valid channel/
no valid MIMO values.
Callers are expected to verify the radio is a MIMO radio
(which for now means it's an 11n chipset, there are non-11n
MIMO chipsets out there but I don't think we support them,
at least in MIMO mode) before exporting the MIMO values.
upper-level HAL.
Right now the per-chain noise floor values aren't used anywhere in
the upper-level HAL, so the driver currently has no real reference
to compare the per-chain RSSI values to.
This is needed before per-chain RSSI values (for ctl and ext radios)
are can be thrown upstairs to the net80211 code.
safer for i386 because it can be easily over 4 GHz now. More worse, it can
be easily changed by user with 'machdep.tsc_freq' tunable (directly) or
cpufreq(4) (indirectly). Note it is intentionally not used in performance
critical paths to avoid performance regression (but we should, in theory).
Alternatively, we may add "virtual TSC" with lower frequency if maximum
frequency overflows 32 bits (and ignore possible incoherency as we do now).
- remove self-reference in SEE ALSO section (originally was to s/XR/Xr)
cxgbe.4:
- remove blank line
- add closing .El
Reported by: manlint
MFC after: 3 days
path via the sysretq instruction to return from the system call. This was
removed in 190620 and not quite fully restored in 195486. This resolves
most of the performance regression in system call microbenchmarks between
7 and 8 on amd64.
Reviewed by: kib
MFC after: 1 week
