On Sat, July 27, 2002 at 7:36 PM, Robert White wrote:
>
> And if you could show me ONE example of wild code that would be
> harmed by the mod I would shut up and go away.
>
> (I say wild code, but even contrived code would be interesting.)
>From the archive ...
http://marc.theaimsgroup.com/?l=linux-kernel&m=102440556723250&w=2
Yep, this is an example of "precaching" and was the example I said I have
seen. Since there is no USE of the precached data during the read, the
there wasn't any demonstrable purpose to the action.
That is, this is NOT CODE "IN THE WILD", it is the contrived example of
use, it doesn't meet the requested requirement that the example be "harmed"
by the patch as there is no actual algorithm attached.
Any code that did this would then read this data out of the buffer by
another request after resetting VMIN which *IS* a dependence on "magic
state" since the current read is blocking on state that cannot be returned
to the user.
Note that the author of the linked message says "having said that, I don't
know of any instances where the above is employed." and then agrees the
patch is worthwhile...
So it doesn't fulfill my request/requirement, the cited author explicitly
supports my position, and there isn't any implication of how the rest of
the supposed program might use this magic state...
hmmm....
Not the best argument Ed.
Rob.
At 14:46 7/29/2002 -0700, Ed Vance wrote:
>On Sat, July 27, 2002 at 7:36 PM, Robert White wrote:
> >
> > And if you could show me ONE example of wild code that would be
> > harmed by the mod I would shut up and go away.
> >
> > (I say wild code, but even contrived code would be interesting.)
>
> From the archive ...
>http://marc.theaimsgroup.com/?l=linux-kernel&m=102440556723250&w=2
----------------------------------------------------------------------
-- Rob White -- Consider: for all vectors v, Cv - Cv = 0 --
-- [email protected] -- general relativity is thus disproved. --
----------------------------------------------------------------------
-- There once was a man who claimed nothing was true, --
-- he was later, of course, found to be lying. --
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