Jarek Poplawski 381a229209 [PATCH] lockdep: more unlock-on-error fixes
- returns after DEBUG_LOCKS_WARN_ON added in 3 places

- debug_locks checking after lookup_chain_cache() added in
  __lock_acquire()

- locking for testing and changing global variable max_lockdep_depth
  added in __lock_acquire()

From: Ingo Molnar <mingo@elte.hu>

My __acquire_lock() cleanup introduced a locking bug: on SMP systems we'd
release a non-owned graph lock.  Fix this by moving the graph unlock back,
and by leaving the max_lockdep_depth variable update possibly racy.  (we
dont care, it's just statistics)

Also add some minimal debugging code to graph_unlock()/graph_lock(),
which caught this locking bug.

Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:26 -08:00
..
2007-02-09 17:39:36 -05:00
2006-09-11 13:32:30 -04:00
2006-12-08 08:28:46 -08:00
2006-09-29 09:18:12 -07:00
2006-12-30 10:56:43 -08:00
2006-12-07 08:39:25 -08:00
2006-03-26 08:57:03 -08:00
2006-12-07 08:39:36 -08:00
2006-12-04 02:00:22 -05:00
2006-12-15 08:47:51 -08:00
2007-02-07 10:37:12 -08:00
2006-09-30 01:47:55 +02:00
2007-02-07 10:37:12 -08:00
2006-09-29 09:18:12 -07:00
2006-12-22 08:55:51 -08:00
2007-02-09 17:39:36 -05:00
2005-04-16 15:20:36 -07:00
2006-12-10 09:55:41 -08:00
2006-04-19 16:27:18 -07:00
2006-12-07 08:39:25 -08:00
2006-07-10 13:24:25 -07:00