Re: [PATCH] mm: page_alloc: Make paranoid check in move_freepages a VM_BUG_ON

[Johannes Weiner]

On Tue, Sep 09, 2014 at 03:52:28PM +0100, Mel Gorman wrote:
> Since 2.6.24 there has been a paranoid check in move_freepages that looks
> up the zone of two pages. This is a very slow path and the only time I've
> seen this bug trigger recently is when memory initialisation was broken
> during patch development. Despite the fact it's a slow path, this patch
> converts the check to a VM_BUG_ON anyway as it is served its purpose by now.
> 
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
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