Re: [PATCH][RFC] splice support

[Nick Piggin]

Jens Axboe wrote:
> On Thu, Mar 30 2006, Andrew Morton wrote:

> > Maybe the code handles that by making sure that all the pages in the range
> > are already in pagecache - I didn't check.  But that would take some heroic
> > locking.
>
>
> It doesn't, I'm assuming that find_get_pages() returns consequtive pages
> atm. Would seem like the sane interface :-)

It doesn't.

You could do a find_get_pages_and_holes (or something along those
lines), which would fetch contiguous pagecache and stick NULLs
if pages don't exist.

Would require a bit of radix-tree support to do it nicely, but you
could get started with a naive find_get_page loop.

--
SUSE Labs, Novell Inc.
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