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jbd: relocate assert after state lock in journal_commit_transaction()

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The state lock is taken after we are doing an assert on the state
value, not before.  So we might in fact be doing an assert on a
transient value.  Ensure the state check is within the scope of
the state lock being taken.

Backport of jbd2 commit 3ca841c106fd6cd2c942985977a5d126434a8dd6
("jbd2: relocate assert after state lock in journal_commit_transaction()")

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Paul Gortmaker 2013-08-01 15:01:06 -04:00 committed by Jan Kara
parent e729eac6f6
commit a91de85247
1 changed files with 1 additions and 1 deletions
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2
fs/jbd/commit.c
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@ -340,13 +340,13 @@ void journal_commit_transaction(journal_t *journal)
J_ASSERT(journal->j_committing_transaction == NULL);
commit_transaction = journal->j_running_transaction;
J_ASSERT(commit_transaction->t_state == T_RUNNING);
trace_jbd_start_commit(journal, commit_transaction);
jbd_debug(1, "JBD: starting commit of transaction %d\n",
commit_transaction->t_tid);
spin_lock(&journal->j_state_lock);
J_ASSERT(commit_transaction->t_state == T_RUNNING);
commit_transaction->t_state = T_LOCKED;
trace_jbd_commit_locking(journal, commit_transaction);