Import bmake-20130330
Tag bmake-20130330
Update to bmake-20130330
sh: Write as much into the heredoc pipe as possible, to avoid forking.

Use non-blocking I/O to write as much as the pipe will accept (often 64K,
but it can be as little as 4K), avoiding the need for the ugly PIPESIZE
constant. If PIPESIZE was set too high, a deadlock would occur.
Replace access to /dev/random with the kernel pseudo-random number
source sysctl(KERN_ARND) and remove the fallback code.

Obtained from:	OpenBSD
Reviewed by:	secteam
MFC after:	1 month
Comment out the VIMAGE since we need to build both LINTS to
get good coverage.

Pointed out by:	jhb
Replace the remaining uses of vm_radix_node_page() by vm_radix_isleaf() and
vm_radix_topage().  This transformation eliminates some unnecessary
conditional branches from the inner loops of vm_radix_insert(),
vm_radix_lookup{,_ge,_le}(), and vm_radix_remove().

Simplify the control flow of vm_radix_lookup_{ge,le}().

Reviewed by:	attilio (an earlier version)
Tested by:	pho
Sponsored by:	EMC / Isilon Storage Division
Add new USB ID.

MFC after:	1 week
Submitted by:	Bruce Simpson <bms@fastmail.net>
drm and i915: Left-shift iic_msg.slave at creation time

This is required because, in the radeon driver, we can't left-shift in a
central place, like it was done in the i915 driver.

Reviewed by:	kib@, kan@, avg@
Tested by:	kib@, avg@
Fix possible pool hold leak in dmu_send_impl()

Problem reported to vendor:
  https://www.illumos.org/issues/3645

Reported by:	Andriy Gapon <avg@FreeBSD.org>
MFC after:	15 days
Add missing ifdef's for reduced feature compilations.
spa_open_common: fix argument to zvol_create_minors

Prior to r248571 spa_open was always called with a bare pool name,
but now it is called with a dataset name instead (spa_lookup handles
that).
So, when a ZFS root is mounted spa_open is called with a name of a root
dataset, which can very well be different from the pool name.
But zvol_create_minors should be called with the pool name, because it
performs a recursive traversal of all datasets under the name to find
all those that are volumes.

MFC after:	7 days
Add xpt_release_ccb()'s missed at r248872.  That made `shutdown -p` stuck
on controller with small number of queue slots and several disks connected.
Add some more ATA_CAM ifdefs.

Submitted by:	marius (partially)
MFC after:	1 week
Tell bmake to use the FreeBSD preferred makefile preference list.

PR:		177593
Reviewed by:	obrien
Since ATA_CAM mode has no implemented support for serializing access to the
different ATA channels, required for acard and pc98 ATA controllers, block
access to second channels of both, hoping that one working channel is better
then none.  I have an idea how that support could be implemented, but I have
no hardware to work on that.

MFC after:	1 week
IFP4 change 222074.

Introduce an explicit close of the output descriptor so that work done
on close is accounted for in the summary output triggered at exit
(implicit close()s occur after atexit() hooks).

This is useful because some devices such as cfi(4) may perform
signficant work after a close occurs (e.g. erasing and rewriting a
block of flash).
The code in clear_remove() and clear_inodedeps() skips one entry
in the pagedep and inodedep hash tables. An entry in the table is
skipped because 'pagedep_hash' and 'inodedep_hash' hold the size
of the hash tables - 1.

The chance that this would have any operational failure is extremely
unlikely. These funtions only need to find a single entry and are
only called when there are too many entries. The chance that they
would fail because all the entries are on the single skipped hash
chain are remote.

Submitted by: Pedro Martelletto
Reviewed by:  kib
MFC after:    2 weeks
Fix locking problem in ctl_maintenance_in() - one cannot use M_WAITOK or call
ctl_done() with mutex held.

Reviewed by:	ken
Sponsored by:	FreeBSD Foundation
Check for SS_NBIO in the socket state field rather than socket buffer
flags.

Submitted by:	Vijay Singh
MFC after:	1 week