Remove $FreeBSD$: two-line nroff pattern

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

Fix mdoc issues found by mandoc -Tlint.

rmlock(9): add an RM_DUPOK flag

Allows for duplicate locks to be acquired without witness complaining.
Similar flags exists already for rwlock(9) and sx(9).

Reviewed by: markj
MFC after: 3 days
Spo

rmlock(9): add an RM_DUPOK flag

Allows for duplicate locks to be acquired without witness complaining.
Similar flags exists already for rwlock(9) and sx(9).

Reviewed by: markj
MFC after: 3 days
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
NetApp PR: 52
Differential Revision: https://reviews.freebsd.org/D29683n

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rmlock(9): Some markup fixes

- new sentence, new line

MFC after: 3 days

Add read-mostly sleepable locks

To be used when like rmlocks, except when sleeping for readers needs to be
allowed. See the manpage for more information.

Reviewed by: kib (previous version)
Differe

Add read-mostly sleepable locks

To be used when like rmlocks, except when sleeping for readers needs to be
allowed. See the manpage for more information.

Reviewed by: kib (previous version)
Differential Revision: https://reviews.freebsd.org/D22823

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Merge ^/head r325999 through r326131.

Clean up the SYSINIT_FLAGS definitions for rwlock(9) and rmlock(9).

Avoid duplication in their macro definitions, and document them. No
functional change intended.

MFC after: 1 week

Merge sync of head

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

MFhead @ r275911 (also, sort out MK_* flags in BMAKE, etc on this branch)

Merge ^/head r275759 through r275911.

Properly sort Xr to silence mandoc warnings.

Differential Revision: https://reviews.freebsd.org/D1314
Reviewed by: wblock
MFC after: 1 Month

Merge ^/head r275749 through r275758.

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).
A _NEW flag passed to _init_flags() to avoid check for double-init.

Differential Revision: https://reviews.freebsd.org/D1208
Reviewed by: jhb

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).
A _NEW flag passed to _init_flags() to avoid check for double-init.

Differential Revision: https://reviews.freebsd.org/D1208
Reviewed by: jhb, wblock
MFC after: 1 Month

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Merge head r233826 through r256722.

Merge from head

IFC @ r254014

IFC @253398

IFC @ r252288

Several improvements to rmlock(9). Many of these are based on patches
provided by Isilon.
- Add an rm_assert() supporting various lock assertions similar to other
locking primitives. Because rmlo

Several improvements to rmlock(9). Many of these are based on patches
provided by Isilon.
- Add an rm_assert() supporting various lock assertions similar to other
locking primitives. Because rmlocks track readers the assertions are
always fully accurate unlike rw_assert() and sx_assert().
- Flesh out the lock class methods for rmlocks to support sleeping via
condvars and rm_sleep() (but only while holding write locks), rmlock
details in 'show lock' in DDB, and the lc_owner method used by
dtrace.
- Add an internal destroyed cookie so that API functions can assert
that an rmlock is not destroyed.
- Make use of rm_assert() to add various assertions to the API (e.g.
to assert locks are held when an unlock routine is called).
- Give RM_SLEEPABLE locks their own lock class and always use the
rmlock's own lock_object with WITNESS.
- Use THREAD_NO_SLEEPING() / THREAD_SLEEPING_OK() to disallow sleeping
while holding a read lock on an rmlock.

Submitted by: andre
Obtained from: EMC/Isilon

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Sync from head

Merge head r236710 through r238467.

IFC @238412.

IFC @ r238370