On 5/1/07, Christoph Lameter <[email protected]> wrote:
On Tue, 1 May 2007, Andrew Morton wrote:
> As Satyam said, this will sometimes cause us to map and unmap the page
> twice, and to run flush_dcache_page() twice. In not-terribly-uncommon
> circumstances in very frequently called functions.
>
> Doesn't seem worth it to me.
Ok but we have that code three times. Should I add a variant of
zero_user_page that zeroes everything but the section specified?
zero_user_page_allbut() ?
the function already exists, it's called simple_prepare_write(), and i
thought there were patches to convert those callsites in -mm ...
although it looks like i let a review comment on that slide by. I
need to redo a bunch of patches for re-submission anyway, so i guess
i'll deal with that tomorrow.
NATE
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