From: Jarek Poplawski <jarkao2@o2.pl>
Date: Tue, 8 May 2007 07:30:12 +0000 (-0700)
Subject: lockdep: lookup_chain_cache comment errata
X-Git-Tag: firefly_0821_release~29797
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9e860d000a90cfc9ca270ddb6e99b177e6aa91cd;p=firefly-linux-kernel-4.4.55.git

lockdep: lookup_chain_cache comment errata

Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 7f573136a905..dc4ea4c2b4c8 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -1309,8 +1309,9 @@ out_unlock_set:
 
 /*
  * Look up a dependency chain. If the key is not present yet then
- * add it and return 0 - in this case the new dependency chain is
- * validated. If the key is already hashed, return 1.
+ * add it and return 1 - in this case the new dependency chain is
+ * validated. If the key is already hashed, return 0.
+ * (On return with 1 graph_lock is held.)
  */
 static inline int lookup_chain_cache(u64 chain_key, struct lock_class *class)
 {