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jbd2: Call journal commit callback without holding j_list_lock

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Avoid freeing the transaction in __jbd2_journal_drop_transaction() so
the journal commit callback can run without holding j_list_lock, to
avoid lock contention on this spinlock.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Aneesh Kumar K.V
2008-11-06 17:50:21 -05:00
committed by Theodore Ts'o
parent c3a326a657
commit fb68407b0d
3 changed files with 11 additions and 8 deletions
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fs/jbd2/checkpoint.c
+1 -1
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@@ -682,6 +682,7 @@ int __jbd2_journal_remove_checkpoint(struct journal_head *jh)
safely remove this transaction from the log */
__jbd2_journal_drop_transaction(journal, transaction);
kfree(transaction);
/* Just in case anybody was waiting for more transactions to be
checkpointed... */
@@ -756,5 +757,4 @@ void __jbd2_journal_drop_transaction(journal_t *journal, transaction_t *transact
J_ASSERT(journal->j_running_transaction != transaction);
jbd_debug(1, "Dropping transaction %d, all done\n", transaction->t_tid);
kfree(transaction);
}