On 2016-02-21 09:49:53 +0530, Robert Haas wrote:
> I think there might be a semantic distinction between these two terms.
> Doesn't writeback mean writing pages to disk, and flushing mean making
> sure that they are durably on disk? So for example when the Linux
> kernel thinks there is too much dirty data, it initiates writeback,
> not a flush; on the other hand, at transaction commit, we initiate a
> flush, not writeback.
I don't think terminology is sufficiently clear to make such a
distinction. Take e.g. our FlushBuffer()...
