Re: [PATCH] mm, hugetlb: gimme back my page

[David Rientjes]

On Thu, 30 Jan 2014, Sasha Levin wrote:

> VM_BUG_ON_PAGE is just a VM_BUG_ON that does dump_page before the BUG().
> 
> The only reason to use VM_BUG_ON instead of VM_BUG_ON_PAGE is if the page
> you're working
> with doesn't make sense/isn't useful as debug output.
> 
> If doing a dump_page is causing issues somewhere then dump_pages should be
> fixed - instead
> of hiding the problem under the rug by not using it.
> 

It sounds like dump_page() isn't necessarily at fault itself but rather 
that using it is opening a race even wider that causes this failure to 
occur more often than it normally would.
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