From: Ingo Oeser <ioe-lkml@rameria.de>
To: linux-kernel@vger.kernel.org
Subject: Re: [RFC] sys_punchhole()
Date: Fri, 11 Nov 2005 09:25:41 +0100
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Cc: Andrew Morton <akpm@osdl.org>, Badari Pulavarty <pbadari@us.ibm.com>,
       andrea@suse.de, hugh@veritas.com, linux-mm@kvack.org
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Hi,

On Friday 11 November 2005 00:32, Andrew Morton wrote:
> Badari Pulavarty <pbadari@us.ibm.com> wrote:
> >
> > We discussed this in madvise(REMOVE) thread - to add support=20
> > for sys_punchhole(fd, offset, len) to complete the functionality
> > (in the future).
> >=20
> > http://marc.theaimsgroup.com/?l=3Dlinux-mm&m=3D113036713810002&w=3D2
> >=20
> > What I am wondering is, should I invest time now to do it ?
>=20
> I haven't even heard anyone mention a need for this in the past 1-2 years.

Because the people need it are usally at the application level.
It would be useful with hard disk editing.

But this would need a move_blocks within the filesystem, which
could attach a given list of blocks to another file.

E.g. mremap() for files :-)

Both together would make harddisk video editing with linux quite
performant and less error prone.


Regards

Ingo Oeser


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