- Handle buffer lock waiters count directly in the buffer cache instead

  than rely on the lockmgr support [1]:
  * bump the waiters only if the interlock is held
  * let brelvp() return the waiters count
  * rely on brelvp() instead than BUF_LOCKWAITERS() in order to check
    for the waiters number
- Remove a namespace pollution introduced recently with lockmgr.h
  including lock.h by including lock.h directly in the consumers and
  making it mandatory for using lockmgr.
- Modify flags accepted by lockinit():
  * introduce LK_NOPROFILE which disables lock profiling for the
    specified lockmgr
  * introduce LK_QUIET which disables ktr tracing for the specified
    lockmgr [2]
  * disallow LK_SLEEPFAIL and LK_NOWAIT to be passed there so that it
    can only be used on a per-instance basis
- Remove BUF_LOCKWAITERS() and lockwaiters() as they are no longer
  used

This patch breaks KPI so __FreBSD_version will be bumped and manpages
updated by further commits. Additively, 'struct buf' changes results in
a disturbed ABI also.

[2] Really, currently there is no ktr tracing in the lockmgr, but it
will be added soon.

[1] Submitted by:	kib
Tested by:	pho, Andrea Barberio <insomniac at slackware dot it>

1 files changed, 1 insertions, 0 deletions

diff --git a/sys/netsmb/smb_conn.h b/sys/netsmb/smb_conn.h
index a83af8b..f9d8272 100644
--- a/sys/netsmb/smb_conn.h
+++ b/sys/netsmb/smb_conn.h
@@ -164,6 +164,7 @@ struct smb_share_info {
 
 #ifdef _KERNEL
 
+#include <sys/lock.h>
 #include <sys/lockmgr.h>
 #include <netsmb/smb_subr.h>