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    SubjectRe: [RFC] sys_punchhole()
    On Sun, Nov 13, 2005 at 03:09:06PM +0000, Pavel Machek wrote:
    > > > We discussed this in madvise(REMOVE) thread - to add support
    > > > for sys_punchhole(fd, offset, len) to complete the functionality
    > > > (in the future).
    > > >
    > > > http://marc.theaimsgroup.com/?l=linux-mm&m=113036713810002&w=2
    > > >
    > > > What I am wondering is, should I invest time now to do it ?
    > >
    > > I haven't even heard anyone mention a need for this in the past 1-2 years.
    >
    > Some database people wanted it maybe month ago. It was replaced by some
    > madvise hack...


    sys_punchhole is also potentially very useful for Hirarchial Storage
    Management. (Holes are typically used for data that have been migrated
    to tape).




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    Ragnar Kjørstad
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