Ok, but even if this is true for ext3 it may not be true for other
journalled fs. AFAIR, reiser is doing an explicit wait_on_buffer
which would then amount to quite a performance hit (speculation,
haven't measured).
> > A barrier operation is sufficient then. So you're saying don't
> > over design, a simple barrier is all you need?
>
> Pretty much so. The simple barrier is the only thing which can be
> effectively optimised at the hardware level with SCSI anyway.
True
-- Jens Axboe- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/