Re: fix iounmap and a pageattr memleak (x86 and x86-64)

[Andrew Morton]

Dave Hansen <haveblue@xxxxxxxxxx> wrote:
>
> Andrea Arcangeli wrote:
> > Still I recommend investigating _why_ debug_pagealloc is violating the
> > API. It might not be necessary to wait for the pageattr universal
> > feature to make DEBUG_PAGEALLOC work safe.
> 
> OK, good to know.  But, for now, can we pull this out of -mm?  Or, at 
> least that BUG_ON()?  DEBUG_PAGEALLOC is an awfully powerful debugging 
> tool to just be removed like this.

If we make it a WARN_ON, will that cause a complete storm of output?
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