Re: [PATCH v2 4/4] mm/hugetl.c: warn out if expected count of huge pages adjustment is not achieved

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On 07/23/2020 08:52 AM, Baoquan He wrote:
> A customer complained that no message is logged wh	en the number of
> persistent huge pages is not changed to the exact value written to
> the sysfs or proc nr_hugepages file.
> 
> In the current code, a best effort is made to satisfy requests made
> via the nr_hugepages file.  However, requests may be only partially
> satisfied.
> 
> Log a message if the code was unsuccessful in fully satisfying a
> request. This includes both increasing and decreasing the number
> of persistent huge pages.

But is kernel expected to warn for all such situations where the user
requested resources could not be allocated completely ? Otherwise, it
does not make sense to add an warning for just one such situation.




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