On Aug 7, 2013, at 7:41 PM, Ed Cashin wrote:

> It sounds like it's wrong to give block pages with a zero count, so why not 
> just have aoe BUG_ON(compound_trans_head(bv->page->_count) == 0) until we're 
> sure nobody does that anymore?

Ugh.  I goofed the parens and such.  I meant,

  BUG_ON(compound_trans_head(bv->bv_page)->_count == 0)

... will catch the cases we think should not be occurring.

> If that idea makes sense to you, I will submit a new patch to follow the one 
> under discussion.

-- 
  Ed Cashin
  ecas...@coraid.com


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