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History log of /src/sys/dev/mscp/mscp_disk.c
RevisionDateAuthorComments
 1.91  11-Jan-2024  mrg mscp(4): add ability for rronline() callback in a workqueue

when an ra(4) disk comes online the hardware interrupt ends up calling
disk_set_info(), which triggers a sleep lock/alloc in this path which
is triggered by LOCKDEBUG.

piggy-back on the existing workqueue for autoconfiguration to handle
this path and run the online completion in the work queue.

this is a little ugly, in that it puts two different types of work
into the one queue, but seems less ugly than creating a second
workqueue for what is likely another one-time event (infact, the other
user may be better handled via config_defer() -- i did not look too
closely.)

with this, LOCKDEBUG kernels work.

tested in simh.
 1.90  09-Aug-2021  andvar fix various typos in comments and messages.
 1.89  29-Mar-2016  mlelstv branches: 1.89.2; 1.89.8;
Initialize disk_geom information, DIOCGPARTINFO relies on it.
 1.88  26-Apr-2015  mlelstv Use C99-style initializers for struct dkdriver.
 1.87  02-Jan-2015  christos We have three sets of DTYPE_ constants in the kernel:
altq Drop Type
disklabel Disk Type
file Descriptor Type
(not to mention constants that contain the string DTYPE).
Let's make them two, by changing the disklabel one to be DisK TYPE since the
other disklabel constants seem to do that. Not many userland programs use
these constants (and the ones that they do are mostly in ifdefs). They will
be fixed shortly.
 1.86  31-Dec-2014  christos more unused removal
 1.85  31-Dec-2014  christos remove unused variable
 1.84  31-Dec-2014  christos make more drivers use disk_ioctl, and add a dev parameter to it so that
we can merge the "easy" disklabel ioctls to it. Ultimately all this will
go do dk_ioctl once all the drivers have been converted.
 1.83  31-Dec-2014  christos Centralize wedge ioctls in disk_ioctl.
 1.82  09-Nov-2014  mlelstv branches: 1.82.2;
support DIOCMWEDGES ioctl
 1.81  25-Jul-2014  dholland Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.
 1.80  25-Jul-2014  dholland Add d_discard to all struct bdevsw instances I could find.

I've set them all to nodiscard. Some of them (wd, dk, vnd, ld,
raidframe, maybe cgd) should be implemented for real.
 1.79  16-Mar-2014  dholland branches: 1.79.2;
typo in previous
 1.78  16-Mar-2014  dholland Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.
 1.77  25-Oct-2013  martin Eliminate unused variables
 1.76  27-Oct-2012  chs branches: 1.76.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.
 1.75  11-Jul-2012  abs branches: 1.75.2;
- Unconditionally initialise tp to avoid a warning
- Use DK_CLOSED rather than CLOSED (no functional change)
 1.74  10-Jul-2012  abs revert unwanted part of previous MSCP commit
 1.73  10-Jul-2012  abs Adjust MSCP attach routines. The current code worked fine on simh-vax, but
unfortunately failed on at least one 'real' SCSI MSCP adaptor.
In the updated code
mscp_dorsp()
 1.72  22-Jun-2012  abs - Add racd* devices for MSCP based CD-ROM drives (RRD40s), as opposed
to mixing them in with the ra* disks, modelled loosely on how MSCP
rx* floppies are handled
- racd* defaults to the same single iso9660 partition as cd*
- Cleanup config option handling slightly so any combination of ra*,
rx* (and now raccd*) can be defined without build errors.
- Avoid ugly printf when disks have all zero disklabel magic number
 1.71  12-Sep-2009  tsutsui branches: 1.71.12; 1.71.18;
Make this compile on ports with __HAVE_OLD_DISKLABEL
(though currently no such ports which have mscp).
Noticed by PR kern/41862.
 1.70  12-May-2009  cegger struct device * -> device_t, no functional changes intended.
 1.69  12-May-2009  cegger struct cfdata * -> cfdata_t, no functional changes intended.
 1.68  18-Apr-2009  tsutsui Remove extra whitespace added by a stupid tool.
XXX: more in src/sys/arch
 1.67  18-Mar-2009  cegger bcopy -> memcpy
 1.66  18-Mar-2009  cegger bzero -> memset
 1.65  14-Mar-2009  dsl ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.64  14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.63  22-Jan-2009  cegger branches: 1.63.2;
buildfix: re-adapt to major() return a 32bit value again.
 1.62  13-Jan-2009  yamt g/c BUFQ_FOO() macros and use bufq_foo() directly.
 1.61  12-Jan-2009  cegger use PRIu64 format to printf major() value
 1.60  11-Jun-2008  drochner branches: 1.60.4;
use device_lookup_private() to get the softc -- while device/softc
are not split yet, it is better than a typecast
 1.59  08-Apr-2008  cegger branches: 1.59.2; 1.59.4; 1.59.6; 1.59.8;
use aprint_*_dev and device_xname
 1.58  19-Oct-2007  ad branches: 1.58.16;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h
 1.57  08-Oct-2007  ad branches: 1.57.2;
Merge disk init changes from the vmlocking branch. These seperate init /
destroy of 'struct disk' from attach / detach.
 1.56  29-Jul-2007  ad branches: 1.56.4; 1.56.6; 1.56.8; 1.56.10;
It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.
 1.55  21-Jul-2007  ad Replace some uses of lockmgr().
 1.54  04-Mar-2007  christos branches: 1.54.2; 1.54.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.53  29-Mar-2006  thorpej branches: 1.53.14;
Use device_private().
 1.52  29-Mar-2006  thorpej Don't sleep on &rx->ra_dev.dv_unit -- sleep on &rx->ra_state instead.
 1.51  28-Mar-2006  thorpej Use device_unit().
 1.50  25-Mar-2006  thorpej Use device_parent().
 1.49  11-Dec-2005  christos branches: 1.49.4; 1.49.6; 1.49.8; 1.49.10; 1.49.12;
merge ktrace-lwp.
 1.48  15-Oct-2005  yamt - change the way to specify a bufq strategy. (by string rather than by number)
- rather than embedding bufq_state in driver softc,
have a pointer to the former.
- move bufq related functions from kern/subr_disk.c to kern/subr_bufq.c.
- rename method to strategy for consistency.
- move some definitions which don't need to be exposed to the rest of kernel
from sys/bufq.h to sys/bufq_impl.h.
(is it better to move it to kern/ or somewhere?)
- fix some obvious breakage in dev/qbus/ts.c. (not tested)
 1.47  27-Feb-2005  perry branches: 1.47.4;
nuke trailing whitespace
 1.46  04-Feb-2005  perry de-__P
 1.45  04-Jan-2005  matt branches: 1.45.2; 1.45.4;
Make sure to get the right softc in rriodone.
 1.44  31-Oct-2004  he Include the <sys/bufq.h> header to allow these to compile again.
 1.43  25-Sep-2004  thorpej Add wedges support to the MSCP disk driver.
 1.42  07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.41  10-May-2003  thorpej branches: 1.41.2;
Change bounds_check_with_label() to take a pointer to the disk structure,
rather than the label itself. This paves the way for some future changes.
 1.40  02-May-2003  dsl Change return type of readdisklabel() to const char *
I hope I've found all the correct places!
 1.39  02-Apr-2003  he Change SBSIZE to SBLOCKSIZE to make this compile after UFS2 was brought
in. OK'ed by ragge.
 1.38  01-Nov-2002  mrg implement separate read/write disk statistics:
- disk_unbusy() gets a new parameter to tell the IO direction.
- struct disk_sysctl gets 4 new members for read/write bytes/transfers.
when processing hw.diskstats, add the read&write bytes/transfers for
the old combined stats to attempt to keep backwards compatibility.

unfortunately, due to multiple bugs, this will cause new kernels and old
vmstat/iostat/systat programs to fail. however, the next time this is
change it will not fail again.

this is just the kernel portion.
 1.37  23-Oct-2002  jdolecek merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe
 1.36  02-Oct-2002  thorpej Add trailing ; to CFATTACH_DECL.
 1.35  30-Sep-2002  thorpej Use CFATTACH_DECL().
 1.34  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.33  06-Sep-2002  gehenna Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.
 1.32  25-Jul-2002  ragge Correct ra disk instrumentation. From Johnny Billquist.
 1.31  22-Jul-2002  hannken Convert to new device buffer queue interface.

Approved by: Anders Magnusson <ragge@netbsd.org>
 1.30  13-Nov-2001  lukem branches: 1.30.8; 1.30.10;
add RCSID
 1.29  12-Apr-2001  thorpej branches: 1.29.2; 1.29.4;
Upon inspection of a 4000/600 dmesg, change the splbios to splubas.

XXX THIS CODE IS SERIOUSLY BROKEN! MSCP DEVICES ARE BLOCK I/O DEVICES,
AND THUS SPLBIO SHOULD BLOCK THEIR INTERRUPTS. The VAX port really
needs to get virtualized spl*() levels.
 1.28  12-Apr-2001  thorpej splimp -> splbio
 1.27  08-Jan-2001  fvdl branches: 1.27.2;
Return error in the case of using ODIOCGDINFO or ODIOCGDEFLABEL when
the number of partitions is > OLDMAXPARTITIONS. This is better
than silently truncating the label (don't want to silently throw
away partitions when using an old disklabel binary on a label with
> 8 partitions). From Enami Tsugutomo.
 1.26  07-Jan-2001  fvdl Adapt all disk devices in MI directories to handle ODIOC* calls
for ports that have bumped MAXPARTITIONS (and thus define
__HAVE_OLD_DISKLABEL).
 1.25  27-May-2000  thorpej branches: 1.25.4;
sleep() -> tsleep()
 1.24  20-May-2000  ragge Remove (more) VAX dependencies.
 1.23  30-Mar-2000  augustss Remove register declarations.
 1.22  21-Jan-2000  thorpej Update for sys/buf.h/disksort_*() changes.
 1.21  06-Jun-1999  ragge branches: 1.21.2; 1.21.4;
Bus'ify the mscp code also.
 1.20  29-May-1999  ragge Copied from ../../arch/vax/mscp/mscp_disk.c,v
 1.19  30-Nov-1998  ragge Fix disk size identifier bug.
 1.18  21-May-1998  ragge Small Wall fixes.
 1.17  08-Feb-1998  ragge Split out MSCP floppies as a separate device (rx) instead of handling
them as disk drives. It is now also allowed to change floppies without
the system complaining :-)
 1.16  24-Jan-1998  ragge Remove __BROKEN_INDIRECT_CONFIG and change all drivers to use
config_search instead.
 1.15  12-Jan-1998  thorpej Update for changes to config.
 1.14  17-Jul-1997  jtk use locator defines in "locators.h" to index cf_loc[]
 1.13  24-Jun-1997  thorpej foosize()'s return value is in DEV_BSIZE units; adjust the size obtained
from the disklabel accordingly.
 1.12  07-Jun-1997  ragge Disk statistics fixes. From Johnny Billquist (bqt@update.uu.se).
 1.11  07-Jun-1997  ragge Create a fake disklabel if there are no one on the disk.
 1.10  15-Mar-1997  ragge Change the way boot device is figured out; now only using DEC numbers
and done when the device get attached.
 1.9  12-Feb-1997  ragge ra disks is DV_DISK, not DV_DULL.
 1.8  31-Jan-1997  thorpej branches: 1.8.4;
Pass a struct device ** down to the functions that find the boot device.
 1.7  11-Jan-1997  ragge branches: 1.7.2;
Many minor bug fixes; mscp subsystem seems to work rather stable now.
 1.6  15-Nov-1996  thorpej Use bitmask_snprintf().
 1.5  13-Oct-1996  christos backout previous kprintf change
 1.4  11-Oct-1996  christos printf -> kprintf, sprintf -> ksprintf
 1.3  11-Jul-1996  ragge Automatic changing of root device after boot now works.
 1.2  10-Jul-1996  ragge Add support for tape drives. More extensive error checking.
 1.1  01-Jul-1996  ragge Totally new approach for MSCP devices; they are now handled more like SCSI.
All Unibus dependencies are removed.
Can support different controllers on different buses.
Allows cloning of devices.
TODO:
Write support for MSCP tapes.
 1.7.2.1  14-Jan-1997  thorpej Snapshot of work-in-progress, committed to private branch.

These changes implement machine-independent root device and file system
selection. Notable features:

- All ports behave in a consistent manner regarding root
device selection.
- No more "options GENERIC"; all kernels have the ability
to boot with RB_ASKNAME to select root device and file system
type.
- Root file system type can be wildcarded; a machine-independent
function will try all possible file systems for the selected
root device until one succeeds.
- If the root file system fails to mount, the operator will
be given the chance to select a new root device and file
system type, rather than having the machine simply panic.
- nfs_mountroot() no longer panics if any part of the NFS
mount process fails; it now returns an error, giving the
operator a chance to recover.
- New, more consistent, config(8) grammar. The constructs:

config netbsd swap generic
config netbsd root on nfs

have been replaced with:

config netbsd root on ? type ?
config netbsd root on ? type nfs

Additionally, the operator may select or wildcard root file
system type in the kernel configuration file:

config netbsd root on cd0a type cd9660

config(8) now requires that a "root" specification be
made. "root" may be wired down or wildcarded. "swap" and
"dump" specifications are optional, and follow previous
semantics.

- config(8) has a new "file-system" keyword, used to configure
file systems into the kernel. Eventually, this will be used
to generate the default vfssw[].

- "options NFSCLIENT" is obsolete, and is replaced by
"file-system NFS". "options NFSSERVER" still exists, since
NFS server support is independent of the NFS file system
client.

- sys/arch/<foo>/<foo>/swapgeneric.c is no longer used, and
will be removed; all information is now generated by config(8).

As of this commit, all ports except arm32 have been updated to use
the new setroot(). Only SPARC, i386, and Alpha ports have been
tested at this time. Port masters should test these changes on their
ports, and report any problems back to me.

More changes are on their way, including RB_ASKNAME support in
nfs_mountroot() (to prompt for server address and path) and, potentially,
the ability to select rarp/bootparam or bootp in nfs_mountroot().
 1.8.4.1  12-Mar-1997  is Merge in changes from Trunk
 1.21.4.3  21-Apr-2001  bouyer Sync with HEAD
 1.21.4.2  18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.21.4.1  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.21.2.1  21-Jun-1999  thorpej Sync w/ -current.
 1.25.4.1  01-May-2001  he Pull up revisions 1.26-1.27 (requested by fvdl):
Increase the number of BSD disklabel partitions on i386 to 16.
 1.27.2.6  11-Nov-2002  nathanw Catch up to -current
 1.27.2.5  18-Oct-2002  nathanw Catch up to -current.
 1.27.2.4  17-Sep-2002  nathanw Catch up to -current.
 1.27.2.3  01-Aug-2002  nathanw Catch up to -current.
 1.27.2.2  14-Nov-2001  nathanw Catch up to -current.
 1.27.2.1  21-Jun-2001  nathanw Catch up to -current.
 1.29.4.1  10-Oct-2001  fvdl Convert all remaining devices.
 1.29.2.3  10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.29.2.2  06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.29.2.1  10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.30.10.1  10-Nov-2002  he Pull up revision 1.32 (requested by ragge in ticket #547):
Correct ``ra'' disk instrumentation.
 1.30.8.3  29-Aug-2002  gehenna catch up with -current.
 1.30.8.2  08-Jun-2002  gehenna fix wrong # of arguments.
 1.30.8.1  16-May-2002  gehenna Add the block/cdevsw device switches.
Use devsw APIs instead of hard-coded major and the access to devsw table.
Fix type of arguments.
 1.41.2.11  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.41.2.10  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.41.2.9  04-Feb-2005  skrll Sync with HEAD.
 1.41.2.8  04-Feb-2005  skrll Adapt to branch.
 1.41.2.7  17-Jan-2005  skrll Sync with HEAD.
 1.41.2.6  02-Nov-2004  skrll Sync with HEAD.
 1.41.2.5  19-Oct-2004  skrll Sync with HEAD
 1.41.2.4  21-Sep-2004  skrll Fix the sync with head I botched.
 1.41.2.3  18-Sep-2004  skrll Sync with HEAD.
 1.41.2.2  12-Aug-2004  skrll Adapt to new world order.

Vax GENERIC compiles.
 1.41.2.1  03-Aug-2004  skrll Sync with HEAD
 1.45.4.2  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.45.4.1  12-Feb-2005  yamt sync with head.
 1.45.2.1  29-Apr-2005  kent sync with -current
 1.47.4.3  27-Oct-2007  yamt sync with head.
 1.47.4.2  03-Sep-2007  yamt sync with head.
 1.47.4.1  21-Jun-2006  yamt sync with head.
 1.49.12.2  31-Mar-2006  tron Merge 2006-03-31 NetBSD-current into the "peter-altq" branch.
 1.49.12.1  28-Mar-2006  tron Merge 2006-03-28 NetBSD-current into the "peter-altq" branch.
 1.49.10.1  19-Apr-2006  elad sync with head.
 1.49.8.1  01-Apr-2006  yamt sync with head.
 1.49.6.1  22-Apr-2006  simonb Sync with head.
 1.49.4.1  09-Sep-2006  rpaulo sync with head
 1.53.14.1  12-Mar-2007  rmind Sync with HEAD.
 1.54.10.1  15-Aug-2007  skrll Sync with HEAD.
 1.54.2.3  23-Oct-2007  ad Sync with head.
 1.54.2.2  20-Aug-2007  ad - Alter disk attach/detach to fix a panic when closing a vnd device.
- Sync with HEAD.
 1.54.2.1  19-Aug-2007  ad - Back out the biodone() changes.
- Eliminate B_ERROR (from HEAD).
 1.56.10.2  29-Jul-2007  ad It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.
 1.56.10.1  29-Jul-2007  ad file mscp_disk.c was added on branch matt-mips64 on 2007-07-29 12:15:44 +0000
 1.56.8.1  14-Oct-2007  yamt sync with head.
 1.56.6.1  06-Nov-2007  matt sync with HEAD
 1.56.4.1  26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.57.2.1  25-Oct-2007  bouyer Sync with HEAD.
 1.58.16.3  17-Jan-2009  mjf Sync with HEAD.
 1.58.16.2  29-Jun-2008  mjf Sync with HEAD.
 1.58.16.1  02-Jun-2008  mjf Sync with HEAD.
 1.59.8.1  18-Jun-2008  simonb Sync with head.
 1.59.6.1  23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.59.4.3  16-Sep-2009  yamt sync with head
 1.59.4.2  16-May-2009  yamt sync with head
 1.59.4.1  04-May-2009  yamt sync with head.
 1.59.2.1  17-Jun-2008  yamt sync with head.
 1.60.4.3  28-Apr-2009  skrll Sync with HEAD.
 1.60.4.2  03-Mar-2009  skrll Sync with HEAD.
 1.60.4.1  19-Jan-2009  skrll Sync with HEAD.
 1.63.2.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.71.18.2  12-Jul-2012  riz Pull up following revision(s) (requested by abs in ticket #412):
sys/dev/mscp/mscp_disk.c: revision 1.75
- Unconditionally initialise tp to avoid a warning
- Use DK_CLOSED rather than CLOSED (no functional change)
 1.71.18.1  04-Jul-2012  jdc Pull up revisions:
src/etc/etc.vax/MAKEDEV.conf revision 1.14
src/sys/arch/vax/conf/GENERIC revision 1.182
src/sys/arch/vax/conf/INSTALL revision 1.60
src/sys/arch/vax/conf/VAX780 revision 1.9
src/sys/arch/vax/conf/majors.vax revision 1.24
src/sys/arch/vax/vax/disksubr.c revision 1.53
src/sys/dev/DEVNAMES revision 1.275
src/sys/dev/mscp/files.mscp revision 1.8
src/sys/dev/mscp/mscp_disk.c revision 1.72
src/sys/dev/mscp/mscp_subr.c revision 1.42
src/distrib/vax/ramdisk/Makefile revision 1.29
(requested by abs in ticket #385).

- Add racd* devices for MSCP based CD-ROM drives (RRD40s), as opposed
to mixing them in with the ra* disks, modelled loosely on how MSCP
rx* floppies are handled
- racd* defaults to the same single iso9660 partition as cd*
- Cleanup config option handling slightly so any combination of ra*,
rx* (and now raccd*) can be defined without build errors.
- Avoid ugly printf when disks have all zero disklabel magic number

Include racd0 and racd1 on ramdisk
 1.71.12.2  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.71.12.1  30-Oct-2012  yamt sync with head
 1.75.2.3  03-Dec-2017  jdolecek update from HEAD
 1.75.2.2  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.75.2.1  20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.76.2.1  18-May-2014  rmind sync with head
 1.79.2.1  10-Aug-2014  tls Rebase.
 1.82.2.3  22-Apr-2016  skrll Sync with HEAD
 1.82.2.2  06-Jun-2015  skrll Sync with HEAD
 1.82.2.1  06-Apr-2015  skrll Sync with HEAD
 1.89.8.5  18-May-2017  pgoyette Fix previous, make it build again.
 1.89.8.4  17-May-2017  pgoyette Finish previous. :(
 1.89.8.3  17-May-2017  pgoyette Adapt to device_lookup_acquire
 1.89.8.2  14-May-2017  pgoyette Rearrange the else clauses to make it work.
 1.89.8.1  27-Apr-2017  pgoyette Restore all work from the former pgoyette-localcount branch (which is
now abandoned doe to cvs merge botch).

The branch now builds, and installs via anita. There are still some
problems (cgd is non-functional and all atf tests time-out) but they
will get resolved soon.
 1.89.2.1  21-Jul-2016  pgoyette Partial adaptation to the new {b,c}devsw locking. Still needs some work.
(See XXX comments in code)

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