I suggest adding the following description and to change the prefix to be jbd2, not ext4, since the change applies 100% to jbd2 code (and so it could potentially apply to ocfs2 if they decide to use this callback, for example). jbd2: Call journal commit callback without holding j_list_lock 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. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html