Re: [Bug #15041] Pagemap endless read loop with LTP

[Matt Mackall]

On Wed, 2010-01-13 at 22:57 +0100, Rafael J. Wysocki wrote:
> On Wednesday 13 January 2010, AmÃrico Wang wrote:
> > On Mon, Jan 11, 2010 at 6:32 AM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > >
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > (either way).
> > >
> > >
> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15041
> > > Subject         : Pagemap endless read loop with LTP
> > > Submitter       : Andi Kleen <andi@xxxxxxxxxxxxxx>
> > > Date            : 2010-01-10 2:09 (1 days old)
> > > References      : http://marc.info/?l=linux-kernel&m=126308941423848&w=4
> > >
> > 
> > According to Andi's later reply, it shoud not be an endless loop,
> > it just takes a rather long time.
> 
> Andi?

This is expected. Pagemap contains 64 bits per page of _address space_.
Sane users will consult ./maps first and then seek.

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