Re: [RFC][PATCH] Implement SEEK_HOLE/SEEK_DATA

["Jörn Engel" <joern@logfs.org>]

On Wed, 28 November 2007 16:06:25 -0800, Nicholas Miell wrote:
> 
> I'd have to reread the original proposal, but I remember FIEMAP as being
> a generalized way of getting information about a files extents. I think
> the original proposal only dealt with mapping file offsets to physical
> extents, but IIRC the interface was flexible enough to implement a
> "where are the holes" request.
> 
> Regardless, SEEK_HOLE/SEEK_DATA being a better suited interface for the
> needs of logfs doesn't make it the best interface for that need.

I'm not sure we are looking for the best interface.  A significant
improvement without significant drawbacks would be enough for me.

Having to provide "physical extends" complete with device offsets would
be a significant drawback.  Even if such an interface may have greater
advantages under ideal circumstances.

Jörn

-- 
He who knows others is wise.
He who knows himself is enlightened.
-- Lao Tsu
-
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html