Re: [RFC][PATCH] Interface to invalidate regions of mmaps
William Lee Irwin III (wli@holomorphy.com)
Tue, 13 May 2003 15:00:41 -0700
On Tue, May 13, 2003 at 01:36:36PM -0700, Paul E. McKenney wrote:
> This patch adds an API to allow networked and distributed filesystems
> to invalidate portions of (or all of) a file. This is needed to
> provide POSIX or near-POSIX semantics in such filesystems, as
> discussed on LKML late last year:
> http://marc.theaimsgroup.com/?l=linux-kernel&m=103609089604576&w=2
> http://marc.theaimsgroup.com/?l=linux-kernel&m=103167761917669&w=2
It looks possible to consolidate this with the internals of vmtruncate()
by passing in the maximum value representable by loff_t as the length.
-- wli
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