Jens Axboe wrote:
>
> On Mon, Sep 09 2002, Daniel Phillips wrote:
> > On Monday 09 September 2002 21:40, Andrew Morton wrote:
> > > We need a general-purpose "read or write these pages to this blockdev"
> > > library function.
> >
> > I thought bio was supposed to be that. In what way does it not suffice?
> > Simply because of not having a suitable wrapper?
>
> a bio _can_ hold a number of pages, it's just that noone has written the
> bio_rw_pages() yet. Not that it would be hard...
It's simple if it's synchronous. When I discussed this a while
back with the LVM and EVMS developers the consensus was that an
async API would be better - so we'd need some sort of completion
cookie or callback or whatever.
It would end up with almost as much state as the rather amazing
`struct dio'.
Of course, one could do a synchronous API and see if anyone really,
really complains ;) But a bit of requirements-gathering would be
needed before getting in and coding it.
-
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This archive was generated by hypermail 2b29 : Sun Sep 15 2002 - 22:00:20 EST