The patch titled
jbd: need to hold j_state_lock to updates to transaction t_state to T_COMMIT
has been added to the -mm tree. Its filename is
jbd-need-to-hold-j_state_lock-to-updates-to-transaction-t_state-to-t_commit.patch
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------------------------------------------------------
Subject: jbd: need to hold j_state_lock to updates to transaction t_state to T_COMMIT
From: Mingming Cao <cmm@xxxxxxxxxx>
Updating the current transaction's t_state is protected by j_state_lock. We
need to do the same when updating the t_state to T_COMMIT.
Signed-off-by: Mingming Cao <cmm@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/jbd/commit.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN fs/jbd/commit.c~jbd-need-to-hold-j_state_lock-to-updates-to-transaction-t_state-to-t_commit fs/jbd/commit.c
--- a/fs/jbd/commit.c~jbd-need-to-hold-j_state_lock-to-updates-to-transaction-t_state-to-t_commit
+++ a/fs/jbd/commit.c
@@ -470,7 +470,9 @@ void journal_commit_transaction(journal_
* transaction! Now comes the tricky part: we need to write out
* metadata. Loop over the transaction's entire buffer list:
*/
+ spin_lock(&journal->j_state_lock);
commit_transaction->t_state = T_COMMIT;
+ spin_unlock(&journal->j_state_lock);
J_ASSERT(commit_transaction->t_nr_buffers <=
commit_transaction->t_outstanding_credits);
_
Patches currently in -mm which might be from cmm@xxxxxxxxxx are
jbd-need-to-hold-j_state_lock-to-updates-to-transaction-t_state-to-t_commit.patch
ext4-switch-to-seq_files.patch
jbd2-need-hold-j_state_lock-to-updates-to-transaction-t_state-to-t_commit.patch
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