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Date:   Thu, 23 Jul 2020 11:46:30 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Baoquan He <bhe@...hat.com>, linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, mike.kravetz@...cle.com, david@...hat.com,
        akpm@...ux-foundation.org
Subject: Re: [PATCH v2 4/4] mm/hugetl.c: warn out if expected count of huge
 pages adjustment is not achieved



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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