[PATCH] Fix hang caused by race waking commit threads (2 of 3)

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2005/03/16 15:43:34-06:00 [email protected] 
#   JFS: Fix hang caused by race waking commit threads
#   
#   The flag, jfs_commit_threads_waking, is meant to avoid waking up too
#   many jfs_commit threads when only one is needed.  There is a
#   possibility that all the threads will be running, and the flag gets
#   set, but never reset.  The fix is to make sure the flag is reset
#   before a thread sleeps.
#   
#   Signed-off-by: Dave Kleikamp <[email protected]>
# 
diff -Nru a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
--- a/fs/jfs/jfs_txnmgr.c	2005-03-23 16:57:05 -06:00
+++ b/fs/jfs/jfs_txnmgr.c	2005-03-23 16:57:05 -06:00
@@ -1,5 +1,5 @@
 /*
- *   Copyright (C) International Business Machines Corp., 2000-2004
+ *   Copyright (C) International Business Machines Corp., 2000-2005
  *   Portions Copyright (C) Christoph Hellwig, 2001-2002
  *
  *   This program is free software;  you can redistribute it and/or modify
@@ -2796,6 +2796,8 @@
 			if (!WorkDone)
 				break;
 		}
+		/* In case a wakeup came while all threads were active */
+		jfs_commit_thread_waking = 0;
 
 		if (current->flags & PF_FREEZE) {
 			LAZY_UNLOCK(flags);


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