man filesystems: fix xrefs after move to section 4

Reviewed by: des, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1077

Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

disk(9): Fix a few mandoc related errors

- function name without markup: g_io_deliver()
- function name without markup: disk_gone()
- sections out of conventional order: Sh SEE ALSO
- referenced man

disk(9): Fix a few mandoc related errors

- function name without markup: g_io_deliver()
- function name without markup: disk_gone()
- sections out of conventional order: Sh SEE ALSO
- referenced manual not found: Xr MAKE_DEV 9

Actually the man page of MAKE_DEV has never existed.

MFC after: 3 days

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Fix typo in r360492:

appeard -> appeared

Reported by: trasz (via IRC)

Add HISTORY sections to disk(9), driver(9), and
epoch(9).

In one instance, remove a trailing whitespace while here.

Submitted by: gbergling_gmail.com
Approved by: bcr
Differential Revision: https:/

Add HISTORY sections to disk(9), driver(9), and
epoch(9).

In one instance, remove a trailing whitespace while here.

Submitted by: gbergling_gmail.com
Approved by: bcr
Differential Revision: https://reviews.freebsd.org/D24243

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MFhead@r322451

Merge ^/head r321383 through r322397.

Expose API to allow disks to ask for alias names in devfs.

Implement disk_add_alias to allow aliases to be added to disks. All
disk have a primary name (say "foo") can also have secondary names
(say

Expose API to allow disks to ask for alias names in devfs.

Implement disk_add_alias to allow aliases to be added to disks. All
disk have a primary name (say "foo") can also have secondary names
(say "bar") such that all instances of "foo" also have a "bar"
alias. So if you have foo0, foo0p1, foo1, foo1s1 and foo1s1a nodes
created by the foo driver and gpart, device nodes bar0, bar0p1, bar1,
bar1s1 and bar1s1a will appear as symlinks back to the original nodes.
This generalizes to multiple aliases. However, since the unit number
follows the primary name, multiple device drivers can't create the
same aliases unless those drives coorinate the unit number space (eg
you couldn't add an alias 'disk' to both 'da' and 'ada' because it's
possible to have da0 and ada0, because 'disk0' is ambiguous).

Differential Revision: https://reviews.freebsd.org/D11873

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Merge head

IFC @264767

MFC @ r259205 in preparation for some SVM updates. (for real this time)

Merge head r232040 through r257457.
M usr.sbin/portsnap/portsnap/portsnap.8
M usr.sbin/portsnap/portsnap/portsnap.sh
M usr.sbin/tcpdump/tcpdump/Makefile

Remove Giant-locked drivers support (DISKFLAG_NEEDSGIANT flag) from disk(9).

Since at least FreeBSD 7 we had only four of them in the base tree, and
in head branch, thanks to jhb@, we have no any fo

Remove Giant-locked drivers support (DISKFLAG_NEEDSGIANT flag) from disk(9).

Since at least FreeBSD 7 we had only four of them in the base tree, and
in head branch, thanks to jhb@, we have no any for more then a year.

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Merge fresh head.

MFC

IFC @ r242684

Sync from head

Document disk_resize(9).

Merge head r236710 through r238467.

IFC @238412.

IFC @ r238370

Fix a bug which causes a panic in daopen(). The panic is caused by
a da(4) instance going away while GEOM is still probing it.

In this case, the GEOM disk class instance has been created by
disk_cre

Fix a bug which causes a panic in daopen(). The panic is caused by
a da(4) instance going away while GEOM is still probing it.

In this case, the GEOM disk class instance has been created by
disk_create(), and the taste of the disk is queued in the GEOM
event queue.

While that event is queued, the da(4) instance goes away. When the
open call comes into the da(4) driver, it dereferences the freed
(but non-NULL) peripheral pointer provided by GEOM, which results
in a panic.

The solution is to add a callback to the GEOM disk code that is
called when all of its resources are cleaned up. This is
implemented inside GEOM by adding an optional callback that is
called when all consumers have detached from a provider, and the
provider is about to be deleted.

scsi_cd.c,
scsi_da.c: In the register routine for the cd(4) and da(4)
routines, acquire a reference to the CAM peripheral
instance just before we call disk_create().

Use the new GEOM disk d_gone() callback to register
a callback (dadiskgonecb()/cddiskgonecb()) that
decrements the peripheral reference count once GEOM
has finished cleaning up its resources.

In the cd(4) driver, clean up open and close
behavior slightly. GEOM makes sure we only get one
open() and one close call, so there is no need to
set an open flag and decrement the reference count
if we are not the first open.

In the cd(4) driver, use cam_periph_release_locked()
in a couple of error scenarios to avoid extra mutex
calls.

geom.h: Add a new, optional, providergone callback that
is called when a provider is about to be deleted.

geom_disk.h: Add a new d_gone() callback to the GEOM disk
interface.

Bump the DISK_VERSION to version 2. This probably
should have been done after a couple of previous
changes, especially the addition of the d_getattr()
callback.

geom_disk.c: Add a providergone callback for the disk class,
g_disk_providergone(), that calls the user's
d_gone() callback if it exists.

Bump the DISK_VERSION to 2.

geom_subr.c: In g_destroy_provider(), call the providergone
callback if it has been provided.

In g_new_geomf(), propagate the class's
providergone callback to the new geom instance.

blkfront.c: Callers of disk_create() are supposed to pass in
DISK_VERSION, not an explicit disk API version
number. Update the blkfront driver to do that.

disk.9: Update the disk(9) man page to include information
on the new d_gone() callback, as well as the
previously added d_getattr() callback, d_descr
field, and HBA PCI ID fields.

MFC after: 5 days

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Merge from head up to r188941 (last revision before the USB stack switch)

Update the projects tree to a newer FreeBSD current.

Mention disk_gone() in disk(9).

Approved by: rwatson (mentor)