* O_DIRECT, fdatasync_area, mwrite
@ 2007-06-21 19:02 Reza Roboubi
2007-06-22 5:43 ` Reza Roboubi
0 siblings, 1 reply; 2+ messages in thread
From: Reza Roboubi @ 2007-06-21 19:02 UTC (permalink / raw)
To: Linux Kernel Mailing List; +Cc: torvalds
Linus Torvalds:
> I suspect that this is about a few hundred lines of code (and a lot of
> testing). And you can emulate O_DIRECT behavior with it, along with
> splice (only for page-cache entities, though), and a lot of other
> off-by-one uses.
( http://lwn.net/2002/0516/a/lt-async.php3 )
I have often read this message and wondered why no one has implemented
it yet. We would love to have such clean features instead of O_DIRECT.
At this very moment it's a bit hard for us to do this(given a
prerequisites learning curve amongst other factors.) We may at some
point do it and I'd love to contribute. What _are_ the issues with it,
and is there a technical reason it hasn't been implemented yet by anybody?
Further, is O_DIRECT to raw partition also unclean?
Thanks.
Reza.
--
Reza Roboubi
Chief Technical Officer
http://www.EarthDetails.com
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: O_DIRECT, fdatasync_area, mwrite
2007-06-21 19:02 O_DIRECT, fdatasync_area, mwrite Reza Roboubi
@ 2007-06-22 5:43 ` Reza Roboubi
0 siblings, 0 replies; 2+ messages in thread
From: Reza Roboubi @ 2007-06-22 5:43 UTC (permalink / raw)
To: Linux Kernel Mailing List
Reza Roboubi wrote:
> Linus Torvalds:
> > I suspect that this is about a few hundred lines of code (and a lot of
> > testing). And you can emulate O_DIRECT behavior with it, along with
> > splice (only for page-cache entities, though), and a lot of other
> > off-by-one uses.
> ( http://lwn.net/2002/0516/a/lt-async.php3 )
>
> I have often read this message and wondered why no one has implemented
> it yet. We would love to have such clean features instead of O_DIRECT.
> At this very moment it's a bit hard for us to do this(given a
> prerequisites learning curve amongst other factors.) We may at some
> point do it and I'd love to contribute. What _are_ the issues with it,
> and is there a technical reason it hasn't been implemented yet by anybody?
>
> Further, is O_DIRECT to raw partition also unclean?
I know the top guys are very busy; but I'd appreciate just a brief
comment on the present situation.
Reza.
^ permalink raw reply [flat|nested] 2+ messages in thread
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