xfs: log recovery tracepoints to track current lsn and buffer submission
Log recovery has particular rules around buffer submission along with tricky corner cases where independent transactions can share an LSN. As such, it can be difficult to follow when/why buffers are submitted during recovery. Add a couple tracepoints to post the current LSN of a record when a new record is being processed and when a buffer is being skipped due to LSN ordering. Also, update the recover item class to include the LSN of the current transaction for the item being processed. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
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