Merge vendor bugfix for a possible deadlock related to async destroy
and improve write performance by introducing a new lock protecting
tx_open_txg.
Illumos ZFS issues:
3642 dsl_scan_active() should not issue I/O to determine if async
destroying is active
3643 txg_delay should not hold the tc_lock
MFC after: 1 week
route. What it was is there are two places in ip_output.c
where we do a goto again. One place was fine, it
copies out the new address and then resets dst = ro->rt_dst;
But the other place does *not* do that, which means earlier
when we found the gateway, we have dst pointing there
aka dst = ro->rt_gateway is done.. then we do a
goto again.. bam now we clobber the default route.
The fix is just to move the again so we are always
doing dst = &ro->rt_dst; in the again loop.
PR: 174749,157796
MFC after: 1 week
GDT from the correct segment, otherwise a triple fault would be caused.
In some virtual environments (VMware, VirtualBox, etc) this could lead
to a unhandled error or hang in the guest emulation software.
Thanks to avg and jhb for a few hints in the right direction.
Noticed by: Jeremy Chadwick <jdc@koitsu.org> (and many others)
MFC after: 1 week
instead of kernel_map size to prevent kernel memory exhaustion
by mbufs and a subsequent panic on physical page allocation
failure.
On architectures without a direct map all mbuf memory (except
for jumbo mbufs larger than PAGE_SIZE) comes from kmem_map.
It is the limiting factor hence.
For architectures with a direct map using the size of kmem_map
is a good proxy of available kernel memory as well. If it is
much smaller the mbuf limit may be sub-optimal but remains
reasonable, while avoiding panics under exhaustion.
The overall mbuf memory limit calculation may be reconsidered
again later, however due to the many different mbuf sizes and
different backing KVM maps it is a tricky subject.
Found by: pho's new network stress test
Pointed out by: alc (kmem_map instead of kernel_map)
Tested by: pho
LoopVectorizer: Fix 15830. When scalarizing and unrolling stores make
sure that the order in which the elements are scalarized is the same
as the original order.
This fixes a miscompilation in FreeBSD's regex library.
This should fix lib/libc/regex/regcomp.c at -O3 with clang 3.3 r178860
on CPUs with SSE. Before this change, the vectorizer could incorrectly
rearrange the second loop in computejumps(), leading to possibly invalid
entries in the re_gets::charjump table.
The net result was that for example "sed s/@CC@/foo/" failed to work
correctly, leading to trouble with many configure scripts.
descriptors. Prior to this change the device would only work with guests
that chose to use indirect descriptors.
Modify the device reset callback to actually reset the device state.
Submitted by: Tycho Nightingale (tycho.nightingale@pluribusnetworks.com)
If the bs= expr operand is specified and no conversions other than sync,
noerror, or notrunc are requested, the data returned from each input
block shall be written as a separate output block.
In particular, when both bs=size and conv=sparce were specified, the
resulted file was fully filled, instead of sparce.
PR: standards/177742
Submitted by: Matthew Rezny <mrezny@hexaneinc.com>
MFC after: 2 weeks
duplicate ACK make sure we actually have new data to send.
This prevents us from sending unneccessary pure ACKs.
Reported by: Matt Miller <matt@matthewjmiller.net>
Tested by: Matt Miller <matt@matthewjmiller.net>
MFC after: 2 weeks
and CHECK_GIDS to exist since r152680. This is only needed for
installworld. The documented procedure of running mergemaster -p
to check for missing users is only needed for installworld, not
for installkernel. This fixes auditdistd incorrectly being
required for installkernel.
PR: misc/174405
Approved by: bapt
- use const where appropriate
- use static where appropriate
- use explicit checks checks for error conditions
Reviewed by: sbruno
Approved by: cperciva (mentor)
Obtained by: DragonFlyBSD
- Add an empty line in usage() according to style(9)
PR: bin/177076
Submitted by: Fernando <fernando.apesteguia@gmail.com>
Approved by: cperciva (mentor)
impossible to set quota and reservation on pools lower than version 22.
Problem has been reported and a solution discussed with vendor.
Illumos ZFS issues:
3739 cannot set zfs quota or reservation on pool version < 22
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reported by: Steve Wills <swills@FreeBSD.org>
MFC after: 3 days
