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SubjectRe: [PATCH] hugetlb: avoid gratuitous BUG_ON in hugetlb_fault() -> hugetlb_cow()
On Sun, Apr 29, 2012 at 03:04:51PM -0400, Chris Metcalf wrote:
> Commit 66aebce747eaf added code to avoid a race condition by
> elevating the page refcount in hugetlb_fault() while calling
> hugetlb_cow(). However, one code path in hugetlb_cow() includes
> an assertion that the page count is 1, whereas it may now also
> have the value 2 in this path. Consensus is that this BUG_ON
> has served its purpose, so rather than extending it to cover both
> cases, we just remove it.
> Signed-off-by: Chris Metcalf <>

Acked-by: Mel Gorman <>

Mel Gorman

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