svn commit: r245694 - stable/9/share/man/man9

[Andriy Gapon]

Author: avg
Date: Sun Jan 20 16:23:37 2013
New Revision: 245694
URL: http://svnweb.freebsd.org/changeset/base/245694

Log:
  MFC r244627: lock.9: fix incorrect descriptions of LK_SHARED and
  LK_DOWNGRADE behavior

Modified:
  stable/9/share/man/man9/lock.9
Directory Properties:
  stable/9/share/man/man9/   (props changed)

Modified: stable/9/share/man/man9/lock.9
==============================================================================
--- stable/9/share/man/man9/lock.9	Sun Jan 20 16:15:30 2013	(r245693)
+++ stable/9/share/man/man9/lock.9	Sun Jan 20 16:23:37 2013	(r245694)
@@ -148,7 +148,9 @@ Flags indicating what action is to be ta
 .Bl -tag -width ".Dv LK_CANRECURSE"
 .It Dv LK_SHARED
 Acquire a shared lock.
-If an exclusive lock is currently held, it will be downgraded.
+If an exclusive lock is currently held,
+.Dv EDEADLK
+will be returned.
 .It Dv LK_EXCLUSIVE
 Acquire an exclusive lock.
 If an exclusive lock is already held, and
@@ -158,7 +160,8 @@ is not set, the system will
 .It Dv LK_DOWNGRADE
 Downgrade exclusive lock to a shared lock.
 Downgrading a shared lock is not permitted.
-If an exclusive lock has been recursed, all references will be downgraded.
+If an exclusive lock has been recursed, the system will
+.Xr panic 9 .
 .It Dv LK_UPGRADE
 Upgrade a shared lock to an exclusive lock.
 If this call fails, the shared lock is lost.