Add a comment describing why a race isn't there.



 25-akpm/fs/jbd/transaction.c |    5 +++++
 1 files changed, 5 insertions(+)

diff -puN fs/jbd/transaction.c~jbd-540-journal_try_to_free_buffers-race-fix fs/jbd/transaction.c
--- 25/fs/jbd/transaction.c~jbd-540-journal_try_to_free_buffers-race-fix	Thu Jun  5 15:14:34 2003
+++ 25-akpm/fs/jbd/transaction.c	Thu Jun  5 15:14:34 2003
@@ -1643,6 +1643,11 @@ int journal_try_to_free_buffers(journal_
 	bh = head;
 	do {
 		jbd_lock_bh_state(bh);
+		/*
+		 * We don't have to worry about the buffer being pulled off its
+		 * journal_head in here, because __try_to_free_cp_buf runs
+		 * under jbd_lock_bh_state()
+		 */
 		if (buffer_jbd(bh) &&
 				!__journal_try_to_free_buffer(journal, bh)) {
 			jbd_unlock_bh_state(bh);

_