To: linux-kernel@vger.kernel.org
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [RFC] sys_punchhole()
Date: Sat, 12 Nov 2005 22:11:30 -0800 (PST)
Organization: Mostly alphabetical, except Q, with we do not fancy
Message-ID: <dl6lei$aq5$1@terminus.zytor.com>
References: <1131664994.25354.36.camel@localhost.localdomain> <1131686314.2833.0.camel@laptopd505.fenrus.org>
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Followup to:  <1131686314.2833.0.camel@laptopd505.fenrus.org>
By author:    Arjan van de Ven <arjan@infradead.org>
In newsgroup: linux.dev.kernel
> On Thu, 2005-11-10 at 15:23 -0800, Badari Pulavarty wrote:
> > 
> > We discussed this in madvise(REMOVE) thread - to add support 
> > for sys_punchhole(fd, offset, len) to complete the functionality
> > (in the future).
> 
> in the past always this was said to be "really hard" in linux locking
> wise, esp. the locking with respect to truncate...
> 
> did you find a solution to this problem ?

For the sake of completeness, it should probably be stated that the
utility of such a function is pretty clear.

	-hpa
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