On 2016/8/1 19:02, Michal Hocko wrote:

On Sat 30-07-16 14:33:18, zhong jiang wrote:

quoted

On 2016/7/29 19:27, Michal Hocko wrote:

quoted

On Thu 21-07-16 09:43:40, Michal Hocko wrote:

quoted

We have further discussed the patch and I believe it is not correct. See [1].
I am proposing the following alternative.

Andrew, please drop the mm-hugetlb-fix-race-when-migrate-pages.patch. It
is clearly racy. Whether the BUG_ON update is really the right and
sufficient fix is not 100% clear yet and we are waiting for Zhong Jiang
testing.

The issue is very hard to recur.  Without attaching any patch to
kernel code. up to now, it still not happens to it.

Hmm, OK. So what do you propose? Are you OK with the BUG_ON change or do
you think that this needs a deeper fix?

  yes,  I  agree  with your change.


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