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Catch up with recent locking changes.

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PR:		132546
Submitted by:	pluknet <pluknet@gmail.com>
Reviewed by:	alc
This commit is contained in:
Tom Rhodes 2009-04-03 23:52:47 +00:00
parent 04419f3b80
commit cd5e62f992
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=190680
1 changed files with 0 additions and 6 deletions
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6
share/man/man9/vm_map_lock.9
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@ -73,7 +73,6 @@ The
.Fn vm_map_lock_read
macro obtains a read-lock on
.Fa map .
Currently this is implemented as an exclusive lock.
.Pp
The
.Fn vm_map_unlock_read
@ -93,23 +92,18 @@ macro attempts to obtain a read-lock on
.Fa map .
It returns FALSE if the lock cannot be immediately acquired;
otherwise return TRUE with the lock acquired.
Currently this is implemented as an exclusive lock.
.Pp
The
.Fn vm_map_lock_upgrade
macro attempts to atomically upgrade a read-lock on
.Fa map
to an exclusive lock.
As read-locks are currently implemented as exclusive locks,
this macro is a no-op.
.Pp
The
.Fn vm_map_lock_downgrade
macro attempts to downgrade an exclusive lock on
.Fa map
to a read-lock.
As read-locks are currently implemented as exclusive locks,
this macro is a no-op.
.Sh IMPLEMENTATION NOTES
Currently, all of the locking macros implement their locks as sleep locks.
.Sh SEE ALSO