Lock reporting and assertion changes.

* lockstatus() and VOP_ISLOCKED() gets a new process argument and a new
  return value: LK_EXCLOTHER, when the lock is held exclusively by another
  process.
* The ASSERT_VOP_(UN)LOCKED family is extended to use what this gives them
* Extend the vnode_if.src format to allow more exact specification than
  locked/unlocked.

This commit should not do any semantic changes unless you are using
DEBUG_VFS_LOCKS.

Discussed with:	grog, mch, peter, phk
Reviewed by:	peter

1 files changed, 6 insertions, 1 deletions

diff --git a/sys/kern/vnode_if.src b/sys/kern/vnode_if.src
index 2b16704..c418164 100644
--- a/sys/kern/vnode_if.src
+++ b/sys/kern/vnode_if.src
@@ -43,7 +43,11 @@
 # "error" column defines the locking state on error exit.
 #
 # The locking value can take the following values:
-# L: locked.
+# L: locked; not converted to type of lock.
+# A: any lock type.
+# S: locked with shared lock.
+# E: locked with exclusive lock for this process.
+# O: locked with exclusive lock for other process.
 # U: unlocked.
 # -: not applicable.  vnode does not yet (or no longer) exists.
 # =: the same on input and output, may be either L or U.
@@ -55,6 +59,7 @@
 #
 vop_islocked {
 	IN struct vnode *vp;
+	IN struct proc *p;
 };
 
 #