Re: [osol-code] [PATCH v2] Add preadv and pwritev system calls.

[Dan Mick]

Arnd Bergmann wrote:
> On Monday 15 December 2008, Gerd Hoffmann wrote:
> > Jennifer Pioch wrote:
> > > On 12/12/08, Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote:
> > > > Free- and OpenBSD have it too.  For Solaris I've found a feature request
> > > >  only.  Dunno about MacOS/Darwin.  Other un*xes which are important these
> > > >  days?
> > > Do you know the ID of the feature request?
> > #1167819 @ bugs.opensolaris.org
>
> Looks like they've been working on it for some time:
> "Submit Date   25-MAY-1994"!
>
> 	Arnd <><

No one's expended any serious time on it at all, it looks like, other than 
discussion.

I see the one comment says that it can be done with lio_listio(3RT) (apparently 
in LIO_WAIT mode), and that interface does seem to offer all the preadv/pwritev
functionality.  That's not to say that we shouldn't implement preadv/pwritev 
literally, just that there should be a way to get that sort of functionality today.
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