Chuck Silvers <chuq@chuq.com> writes:

> yes.  when the fragment is extended to a full block (perhaps due to a someone
> seeking a ways past EOF and writing there), we need to flush the whole block,
> not just the part that was previously in the file.  we could do a better job
> of doing this flushing only when we really need to, though.

Then, we need to flush top of new range also, don't we?  I.e., between
trunc_page(off) & ~(bsize - 1) and trunc_page(off).

enami.